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1
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1 // tree-plot.cc -*- C++ -*- |
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2 /* |
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3 |
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322
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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1
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26 #endif |
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27 |
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524
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28 #if defined (__GNUG__) |
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29 #pragma implementation |
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30 #endif |
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31 |
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32 #include <sys/types.h> |
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33 #ifdef HAVE_UNISTD_H |
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34 #include <unistd.h> |
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35 #endif |
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36 #include <iostream.h> |
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86
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37 #include <fstream.h> |
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38 #include <strstream.h> |
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39 |
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524
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40 #include "SLStack.h" |
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41 #include "procstream.h" |
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42 |
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43 #include "user-prefs.h" |
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584
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44 #include "tree-base.h" |
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45 #include "tree-expr.h" |
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46 #include "tree-cmd.h" |
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524
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47 #include "tree-const.h" |
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48 #include "tree-plot.h" |
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543
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49 #include "help.h" |
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1
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50 #include "error.h" |
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51 #include "utils.h" |
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524
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52 #include "defun.h" |
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1
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53 |
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87
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54 extern "C" |
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55 { |
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581
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56 #include <readline/tilde.h> |
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87
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57 } |
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58 |
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1
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59 // The number of lines we\'ve plotted so far. |
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478
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60 int plot_line_count; |
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61 |
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62 // Is this a parametric plot? Makes a difference for 3D plotting. |
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63 int parametric_plot = 0; |
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64 |
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478
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65 // Should the graph window be cleared before plotting the next line? |
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66 int clear_before_plotting = 1; |
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67 |
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524
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68 // List of files to delete when we exit or crash. |
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69 static SLStack <char *> tmp_files; |
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70 |
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71 // Pipe to gnuplot. |
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72 static oprocstream plot_stream; |
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73 |
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581
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74 // Plotting, eh? |
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1
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75 |
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581
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76 tree_plot_command::tree_plot_command (void) : tree_command () |
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1
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77 { |
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524
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78 range = 0; |
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79 plot_list = 0; |
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1
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80 ndim = 0; |
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81 } |
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82 |
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578
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83 tree_plot_command::tree_plot_command (subplot_list *plt, int nd) |
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581
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84 : tree_command () |
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1
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85 { |
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524
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86 range = 0; |
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1
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87 plot_list = plt; |
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88 ndim = nd; |
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89 } |
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90 |
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578
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91 tree_plot_command::tree_plot_command (subplot_list *plt, |
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92 plot_limits *rng, int nd) |
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581
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93 : tree_command () |
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1
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94 { |
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95 range = rng; |
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96 plot_list = plt; |
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97 ndim = nd; |
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98 } |
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99 |
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100 tree_plot_command::~tree_plot_command (void) |
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101 { |
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102 delete range; |
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103 delete plot_list; |
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104 } |
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105 |
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578
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106 void |
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107 tree_plot_command::eval (void) |
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108 { |
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143
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109 if (error_state) |
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578
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110 return; |
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143
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111 |
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1
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112 ostrstream plot_buf; |
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113 |
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114 switch (ndim) |
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115 { |
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476
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116 case 1: |
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478
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117 if (plot_line_count == 0) |
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118 { |
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119 if (plot_list) |
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120 plot_buf << "plot"; |
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121 else |
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122 { |
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123 ::error ("replot: must have something to plot"); |
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578
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124 return; |
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478
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125 } |
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126 } |
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127 else |
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128 plot_buf << "replot"; |
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476
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129 break; |
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1
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130 case 2: |
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478
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131 if (clear_before_plotting || plot_line_count == 0) |
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132 { |
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133 plot_line_count = 0; |
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134 plot_buf << "plot"; |
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135 } |
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136 else |
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137 plot_buf << "replot"; |
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1
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138 break; |
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139 case 3: |
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478
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140 { |
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141 plot_line_count = 0; |
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142 plot_buf << "splot"; |
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143 } |
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1
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144 break; |
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145 default: |
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146 panic_impossible (); |
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147 break; |
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148 } |
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149 |
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524
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150 if (range) |
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478
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151 { |
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152 if (plot_line_count == 0) |
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153 range->print (ndim, plot_buf); |
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154 else |
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155 warning ("can't specify new plot ranges with `replot' or while\ |
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156 hold is on"); |
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157 } |
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1
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158 |
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191
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159 if (error_state) |
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578
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160 return; |
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191
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161 |
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578
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162 for (Pix p = plot_list->first () ; p != 0; plot_list->next (p)) |
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1
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163 { |
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578
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164 subplot *ptr = plot_list->operator () (p); |
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165 |
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1
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166 plot_line_count++; |
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167 |
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578
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168 if (p != plot_list->first ()) |
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1
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169 plot_buf << ",\\\n "; |
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170 |
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171 int status = ptr->print (ndim, plot_buf); |
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172 if (status < 0) |
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578
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173 return; |
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1
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174 } |
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175 |
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176 plot_buf << "\n" << ends; |
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177 |
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178 // Just testing... |
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179 // char *message = plot_buf.str (); |
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180 // cout << "[*]" << message << "[*]\n"; |
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181 |
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182 if (parametric_plot && ndim == 2) |
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183 { |
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184 warning ("can't make 2D parametric plot -- setting noparametric..."); |
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185 send_to_plot_stream ("set noparametric\n"); |
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186 char *message = plot_buf.str (); |
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187 send_to_plot_stream (message); |
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188 delete [] message; |
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189 send_to_plot_stream ("set parametric\n"); |
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190 } |
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191 else |
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192 { |
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193 char *message = plot_buf.str (); |
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194 send_to_plot_stream (message); |
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195 delete [] message; |
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196 } |
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197 } |
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198 |
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199 int |
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578
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200 subplot::print (int ndim, ostrstream& plot_buf) |
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1
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201 { |
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202 int nc = 0; |
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524
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203 if (plot_data) |
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1
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204 { |
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205 tree_constant data = plot_data->eval (0); |
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191
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206 if (! error_state && data.is_defined ()) |
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1
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207 { |
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524
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208 char *file = 0; |
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86
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209 if (data.is_string_type ()) |
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210 { |
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87
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211 file = tilde_expand (data.string_value ()); |
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86
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212 ifstream ftmp (file); |
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213 if (ftmp) |
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214 { |
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215 plot_buf << " \"" << file << '"'; |
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87
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216 free (file); |
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134
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217 goto have_existing_file_or_command; |
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86
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218 } |
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219 else |
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87
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220 { |
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221 free (file); |
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524
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222 file = 0; |
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134
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223 |
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224 // Opening as a file failed. Let's try passing it along as a plot |
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225 // command. |
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226 plot_buf << " " << data.string_value (); |
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227 goto have_existing_file_or_command; |
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87
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228 } |
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86
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229 } |
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230 |
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1
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231 nc = data.columns (); |
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232 switch (ndim) |
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233 { |
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234 case 2: |
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235 file = save_in_tmp_file (data, ndim); |
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236 break; |
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237 case 3: |
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238 file = save_in_tmp_file (data, ndim, parametric_plot); |
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239 break; |
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240 default: |
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241 panic_impossible (); |
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242 break; |
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243 } |
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244 |
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245 if (file) |
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246 { |
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247 mark_for_deletion (file); |
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248 plot_buf << " \"" << file << '"'; |
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249 } |
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250 } |
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251 else |
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252 return -1; |
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253 } |
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254 else |
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255 return -1; |
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256 |
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134
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257 have_existing_file_or_command: |
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86
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258 |
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524
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259 if (using) |
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1
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260 { |
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261 int status = using->print (ndim, nc, plot_buf); |
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262 if (status < 0) |
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263 return -1; |
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264 } |
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265 |
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524
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266 if (title) |
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1
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267 { |
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268 tree_constant tmp = title->eval (0); |
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191
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269 if (! error_state && tmp.is_string_type ()) |
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270 plot_buf << " title " << '"' << tmp.string_value () << '"'; |
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271 else |
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272 { |
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273 warning ("line title must be a string"); |
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274 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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275 } |
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276 } |
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277 else |
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278 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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279 |
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524
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280 if (style) |
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1
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281 { |
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282 int status = style->print (plot_buf); |
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283 if (status < 0) |
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284 return -1; |
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285 } |
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286 |
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287 return 0; |
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288 } |
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289 |
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578
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290 plot_limits::plot_limits (void) |
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1
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291 { |
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524
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292 x_range = 0; |
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293 y_range = 0; |
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294 z_range = 0; |
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1
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295 } |
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296 |
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578
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297 plot_limits::plot_limits (plot_range *xlim) |
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1
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298 { |
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299 x_range = xlim; |
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524
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300 y_range = 0; |
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301 z_range = 0; |
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1
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302 } |
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303 |
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578
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304 plot_limits::plot_limits (plot_range *xlim, |
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305 plot_range *ylim) |
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1
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306 { |
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307 x_range = xlim; |
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308 y_range = ylim; |
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524
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309 z_range = 0; |
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1
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310 } |
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311 |
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578
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312 plot_limits::plot_limits (plot_range *xlim, |
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313 plot_range *ylim, |
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314 plot_range *zlim) |
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1
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315 { |
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316 x_range = xlim; |
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317 y_range = ylim; |
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318 z_range = zlim; |
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319 } |
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320 |
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578
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321 plot_limits::~plot_limits (void) |
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1
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322 { |
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323 delete x_range; |
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324 delete y_range; |
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325 delete z_range; |
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326 } |
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327 |
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328 void |
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578
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329 plot_limits::print (int ndim, ostrstream& plot_buf) |
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1
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330 { |
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331 if (ndim == 2 || ndim == 3) |
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332 { |
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524
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333 if (x_range) |
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1
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334 x_range->print (plot_buf); |
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335 else |
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336 return; |
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337 |
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524
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338 if (y_range) |
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1
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339 y_range->print (plot_buf); |
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340 else |
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341 return; |
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342 } |
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343 |
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524
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344 if (ndim == 3 && z_range) |
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1
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345 z_range->print (plot_buf); |
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346 } |
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347 |
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578
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348 plot_range::plot_range (void) |
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1
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349 { |
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524
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350 lower = 0; |
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351 upper = 0; |
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1
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352 } |
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353 |
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578
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354 plot_range::plot_range (tree_expression *l, tree_expression *u) |
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1
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355 { |
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356 lower = l; |
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357 upper = u; |
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358 } |
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359 |
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578
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360 plot_range::~plot_range (void) |
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1
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361 { |
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362 delete lower; |
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363 delete upper; |
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364 } |
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365 |
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366 void |
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578
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367 plot_range::print (ostrstream& plot_buf) |
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1
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368 { |
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369 plot_buf << " ["; |
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370 |
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524
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371 if (lower) |
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1
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372 { |
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373 tree_constant lower_val = lower->eval (0); |
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191
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374 if (error_state) |
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375 { |
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240
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376 ::error ("evaluating lower bound of plot range"); |
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191
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377 return; |
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378 } |
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379 else |
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380 { |
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381 double lo = lower_val.to_scalar (); |
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382 plot_buf << lo; |
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383 } |
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1
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384 } |
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385 |
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386 plot_buf << ":"; |
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387 |
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524
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388 if (upper) |
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1
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389 { |
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390 tree_constant upper_val = upper->eval (0); |
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191
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391 if (error_state) |
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392 { |
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240
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393 ::error ("evaluating upper bound of plot range"); |
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191
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394 return; |
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395 } |
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396 else |
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397 { |
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398 double hi = upper_val.to_scalar (); |
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399 plot_buf << hi; |
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400 } |
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1
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401 } |
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402 |
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403 plot_buf << "]"; |
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404 } |
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405 |
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578
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406 subplot_using::subplot_using (void) |
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1
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407 { |
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408 qualifier_count = 0; |
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524
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409 x[0] = 0; |
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410 x[1] = 0; |
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411 x[2] = 0; |
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412 x[3] = 0; |
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413 scanf_fmt = 0; |
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1
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414 } |
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415 |
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578
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416 subplot_using::subplot_using (tree_expression *fmt) |
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1
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417 { |
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418 qualifier_count = 0; |
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524
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419 x[0] = 0; |
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420 x[1] = 0; |
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421 x[2] = 0; |
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422 x[3] = 0; |
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1
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423 scanf_fmt = fmt; |
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424 } |
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425 |
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578
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426 subplot_using::~subplot_using (void) |
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1
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427 { |
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428 delete scanf_fmt; |
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429 } |
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430 |
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578
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431 subplot_using * |
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432 subplot_using::set_format (tree_expression *fmt) |
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1
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433 { |
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434 scanf_fmt = fmt; |
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435 return this; |
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436 } |
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437 |
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578
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438 subplot_using * |
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439 subplot_using::add_qualifier (tree_expression *t) |
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1
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440 { |
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441 if (qualifier_count < 4) |
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442 x[qualifier_count] = t; |
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443 |
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444 qualifier_count++; |
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445 |
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446 return this; |
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447 } |
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448 |
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449 int |
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578
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450 subplot_using::print (int ndim, int n_max, ostrstream& plot_buf) |
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1
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451 { |
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452 if ((ndim == 2 && qualifier_count > 4) |
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453 || (ndim == 3 && qualifier_count > 3)) |
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454 return -1; |
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455 |
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456 for (int i = 0; i < qualifier_count; i++) |
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457 { |
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524
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458 if (x[i]) |
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1
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459 { |
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460 tree_constant tmp = x[i]->eval (0); |
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191
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461 if (error_state) |
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462 { |
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240
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463 ::error ("evaluating plot using command"); |
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191
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464 return -1; |
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465 } |
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466 |
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1
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467 double val; |
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468 if (tmp.is_defined ()) |
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469 { |
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470 val = tmp.to_scalar (); |
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471 if (i == 0) |
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472 plot_buf << " using "; |
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473 else |
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474 plot_buf << ":"; |
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475 |
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476 int n = NINT (val); |
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477 |
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322
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478 if (n < 1 || n_max > 0 && n > n_max) |
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1
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479 { |
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240
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480 ::error ("using: column %d out of range", n); |
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1
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481 return -1; |
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482 } |
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483 else |
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484 plot_buf << n; |
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485 } |
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486 else |
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487 return -1; |
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488 } |
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489 else |
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490 return -1; |
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491 } |
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492 |
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524
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493 if (scanf_fmt) |
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1
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494 warning ("ignoring scanf format in plot command"); |
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495 |
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496 return 0; |
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|
497 } |
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498 |
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578
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499 subplot_style::subplot_style (void) |
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1
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500 { |
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524
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501 style = 0; |
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502 linetype = 0; |
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503 pointtype = 0; |
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1
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504 } |
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505 |
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578
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506 subplot_style::subplot_style (char *s) |
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1
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507 { |
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508 style = strsave (s); |
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524
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509 linetype = 0; |
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510 pointtype = 0; |
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1
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511 } |
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512 |
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578
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513 subplot_style::subplot_style (char *s, tree_expression *lt) |
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1
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514 { |
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515 style = strsave (s); |
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516 linetype = lt; |
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524
|
517 pointtype = 0; |
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1
|
518 } |
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519 |
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578
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520 subplot_style::subplot_style (char *s, tree_expression *lt, |
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491
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521 tree_expression *pt) |
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1
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522 { |
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523 style = strsave (s); |
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524 linetype = lt; |
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525 pointtype = pt; |
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|
526 } |
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527 |
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578
|
528 subplot_style::~subplot_style (void) |
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1
|
529 { |
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|
530 delete [] style; |
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531 delete linetype; |
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532 delete pointtype; |
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533 } |
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534 |
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535 int |
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578
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536 subplot_style::print (ostrstream& plot_buf) |
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1
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537 { |
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524
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538 if (style) |
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1
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539 { |
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540 plot_buf << " with " << style; |
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541 |
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524
|
542 if (linetype) |
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1
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543 { |
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544 tree_constant tmp = linetype->eval (0); |
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191
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545 if (! error_state && tmp.is_defined ()) |
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1
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546 { |
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547 double val = tmp.to_scalar (); |
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548 plot_buf << " " << NINT (val); |
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549 } |
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550 else |
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191
|
551 { |
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240
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552 ::error ("evaluating plot style command"); |
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191
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553 return -1; |
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|
554 } |
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1
|
555 } |
|
|
556 |
|
524
|
557 if (pointtype) |
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1
|
558 { |
|
|
559 tree_constant tmp = pointtype->eval (0); |
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191
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560 if (! error_state && tmp.is_defined ()) |
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1
|
561 { |
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562 double val = tmp.to_scalar (); |
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563 plot_buf << " " << NINT (val); |
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|
564 } |
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565 else |
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191
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566 { |
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240
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567 ::error ("evaluating plot style command"); |
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191
|
568 return -1; |
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|
569 } |
|
1
|
570 } |
|
|
571 } |
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572 else |
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573 return -1; |
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|
574 |
|
|
575 return 0; |
|
|
576 } |
|
|
577 |
|
524
|
578 char * |
|
|
579 save_in_tmp_file (tree_constant& t, int ndim, int parametric) |
|
|
580 { |
|
|
581 char *name = strsave (tmpnam (0)); |
|
|
582 if (name) |
|
|
583 { |
|
|
584 ofstream file (name); |
|
|
585 if (file) |
|
|
586 { |
|
|
587 switch (ndim) |
|
|
588 { |
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|
589 case 2: |
|
|
590 t.save (file); |
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|
591 break; |
|
|
592 case 3: |
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|
593 t.save_three_d (file, parametric); |
|
|
594 break; |
|
|
595 default: |
|
|
596 panic_impossible (); |
|
|
597 break; |
|
|
598 } |
|
|
599 } |
|
|
600 else |
|
|
601 { |
|
|
602 error ("couldn't open temporary output file `%s'", name); |
|
|
603 delete [] name; |
|
|
604 name = 0; |
|
|
605 } |
|
|
606 } |
|
|
607 return name; |
|
|
608 } |
|
|
609 |
|
|
610 void |
|
|
611 mark_for_deletion (const char *filename) |
|
|
612 { |
|
|
613 char *tmp = strsave (filename); |
|
|
614 tmp_files.push (tmp); |
|
|
615 } |
|
|
616 |
|
|
617 void |
|
|
618 cleanup_tmp_files (void) |
|
|
619 { |
|
|
620 while (! tmp_files.empty ()) |
|
|
621 { |
|
|
622 char *filename = tmp_files.pop (); |
|
|
623 unlink (filename); |
|
|
624 delete [] filename; |
|
|
625 } |
|
|
626 } |
|
|
627 |
|
|
628 int |
|
|
629 send_to_plot_stream (const char *cmd) |
|
|
630 { |
|
|
631 // From sighandlers.cc: |
|
|
632 extern int pipe_handler_error_count; |
|
|
633 |
|
|
634 static int initialized = 0; |
|
|
635 |
|
|
636 if (! plot_stream.is_open ()) |
|
|
637 { |
|
|
638 plot_line_count = 0; |
|
|
639 |
|
|
640 char *plot_prog = user_pref.gnuplot_binary; |
|
|
641 if (plot_prog) |
|
|
642 { |
|
|
643 plot_stream.open (plot_prog); |
|
|
644 if (! plot_stream.is_open ()) |
|
|
645 { |
|
|
646 warning ("plot: unable to open pipe to `%s'", |
|
|
647 plot_prog); |
|
|
648 |
|
|
649 if (strcmp (plot_prog, "gnuplot") != 0) |
|
|
650 { |
|
|
651 warning ("having trouble finding plotting program."); |
|
|
652 warning ("trying again with `gnuplot'"); |
|
|
653 goto last_chance; |
|
|
654 } |
|
|
655 } |
|
|
656 } |
|
|
657 else |
|
|
658 { |
|
|
659 last_chance: |
|
|
660 |
|
|
661 plot_stream.open ("gnuplot"); |
|
|
662 |
|
|
663 if (! plot_stream.is_open ()) |
|
|
664 { |
|
|
665 error ("plot: unable to open pipe to `%s'", plot_prog); |
|
|
666 return -1; |
|
|
667 } |
|
|
668 } |
|
|
669 } |
|
|
670 |
|
|
671 if (! initialized) |
|
|
672 { |
|
|
673 initialized = 1; |
|
|
674 plot_stream << "set data style lines\n"; |
|
|
675 } |
|
|
676 |
|
|
677 plot_stream << cmd; |
|
|
678 plot_stream.flush (); |
|
|
679 pipe_handler_error_count = 0; |
|
|
680 |
|
|
681 return 0; |
|
|
682 } |
|
|
683 |
|
|
684 void |
|
|
685 close_plot_stream (void) |
|
|
686 { |
|
|
687 if (plot_stream.is_open ()) |
|
|
688 plot_stream.close (); |
|
|
689 |
|
|
690 plot_line_count = 0; |
|
|
691 } |
|
|
692 |
|
|
693 DEFUN ("closeplot", Fcloseplot, Scloseplot, 1, 0, |
|
|
694 "closeplot (): close the stream to plotter") |
|
|
695 { |
|
|
696 Octave_object retval; |
|
|
697 close_plot_stream (); |
|
|
698 return retval; |
|
|
699 } |
|
|
700 |
|
|
701 DEFUN_TEXT ("hold", Fhold, Shold, -1, 1, |
|
|
702 "hold [on|off]\n\ |
|
|
703 \n\ |
|
|
704 determine whether the plot window is cleared before the next line is\n\ |
|
|
705 drawn. With no argument, toggle the current state.") |
|
|
706 { |
|
|
707 Octave_object retval; |
|
|
708 |
|
|
709 DEFINE_ARGV("hold"); |
|
|
710 |
|
|
711 switch (argc) |
|
|
712 { |
|
|
713 case 1: |
|
|
714 clear_before_plotting = ! clear_before_plotting; |
|
|
715 break; |
|
|
716 case 2: |
|
|
717 if (strcasecmp (argv[1], "on") == 0) |
|
|
718 clear_before_plotting = 0; |
|
|
719 else if (strcasecmp (argv[1], "off") == 0) |
|
|
720 clear_before_plotting = 1; |
|
|
721 else |
|
|
722 print_usage ("hold"); |
|
|
723 break; |
|
|
724 default: |
|
|
725 print_usage ("hold"); |
|
|
726 break; |
|
|
727 } |
|
|
728 |
|
|
729 DELETE_ARGV; |
|
|
730 |
|
|
731 return retval; |
|
|
732 } |
|
|
733 |
|
|
734 DEFUN ("purge_tmp_files", Fpurge_tmp_files, Spurge_tmp_files, 5, 1, |
|
|
735 "delete temporary data files used for plotting") |
|
|
736 { |
|
|
737 Octave_object retval; |
|
|
738 cleanup_tmp_files (); |
|
|
739 return retval; |
|
|
740 } |
|
|
741 |
|
|
742 DEFUN_TEXT ("set", Fset, Sset, -1, 1, |
|
|
743 "set [options]\n\ |
|
|
744 \n\ |
|
|
745 set plotting options") |
|
|
746 { |
|
|
747 Octave_object retval; |
|
|
748 |
|
|
749 DEFINE_ARGV("set"); |
|
|
750 |
|
|
751 ostrstream plot_buf; |
|
|
752 |
|
|
753 if (argc > 1) |
|
|
754 { |
|
|
755 if (almost_match ("parametric", argv[1], 3)) |
|
|
756 parametric_plot = 1; |
|
|
757 else if (almost_match ("noparametric", argv[1], 5)) |
|
|
758 parametric_plot = 0; |
|
|
759 } |
|
|
760 |
|
|
761 for (int i = 0; i < argc; i++) |
|
|
762 plot_buf << argv[i] << " "; |
|
|
763 |
|
|
764 plot_buf << "\n" << ends; |
|
|
765 |
|
|
766 char *plot_command = plot_buf.str (); |
|
|
767 send_to_plot_stream (plot_command); |
|
|
768 |
|
|
769 delete [] plot_command; |
|
|
770 |
|
|
771 DELETE_ARGV; |
|
|
772 |
|
|
773 return retval; |
|
|
774 } |
|
|
775 |
|
|
776 DEFUN_TEXT ("show", Fshow, Sshow, -1, 1, |
|
|
777 "show [options]\n\ |
|
|
778 \n\ |
|
|
779 show plotting options") |
|
|
780 { |
|
|
781 Octave_object retval; |
|
|
782 |
|
|
783 DEFINE_ARGV("show"); |
|
|
784 |
|
|
785 ostrstream plot_buf; |
|
|
786 |
|
|
787 for (int i = 0; i < argc; i++) |
|
|
788 plot_buf << argv[i] << " "; |
|
|
789 |
|
|
790 plot_buf << "\n" << ends; |
|
|
791 |
|
|
792 char *plot_command = plot_buf.str (); |
|
|
793 send_to_plot_stream (plot_command); |
|
|
794 |
|
|
795 delete [] plot_command; |
|
|
796 |
|
|
797 DELETE_ARGV; |
|
|
798 |
|
|
799 return retval; |
|
|
800 } |
|
|
801 |
|
1
|
802 /* |
|
|
803 ;;; Local Variables: *** |
|
|
804 ;;; mode: C++ *** |
|
|
805 ;;; page-delimiter: "^/\\*" *** |
|
|
806 ;;; End: *** |
|
|
807 */ |
