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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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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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44 #include "tree-const.h" |
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45 #include "tree-plot.h" |
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543
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46 #include "help.h" |
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1
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47 #include "error.h" |
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48 #include "utils.h" |
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49 #include "tree.h" |
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524
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50 #include "defun.h" |
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51 |
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87
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52 extern "C" |
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53 { |
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54 char *tilde_expand (char *s); /* From readline's tilde.c */ |
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55 } |
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56 |
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1
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57 // The number of lines we\'ve plotted so far. |
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478
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58 int plot_line_count; |
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59 |
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60 // Is this a parametric plot? Makes a difference for 3D plotting. |
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61 int parametric_plot = 0; |
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62 |
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478
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63 // Should the graph window be cleared before plotting the next line? |
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64 int clear_before_plotting = 1; |
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65 |
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524
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66 // List of files to delete when we exit or crash. |
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67 static SLStack <char *> tmp_files; |
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68 |
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69 // Pipe to gnuplot. |
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70 static oprocstream plot_stream; |
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71 |
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1
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72 /* |
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73 * Plotting, eh? |
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74 */ |
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75 |
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76 tree_plot_command::tree_plot_command (void) |
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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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84 { |
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524
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85 range = 0; |
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1
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86 plot_list = plt; |
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87 ndim = nd; |
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88 } |
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89 |
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578
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90 tree_plot_command::tree_plot_command (subplot_list *plt, |
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91 plot_limits *rng, int nd) |
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1
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92 { |
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93 range = rng; |
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94 plot_list = plt; |
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95 ndim = nd; |
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96 } |
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97 |
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98 tree_plot_command::~tree_plot_command (void) |
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99 { |
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100 delete range; |
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101 delete plot_list; |
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102 } |
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103 |
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578
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104 void |
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105 tree_plot_command::eval (void) |
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106 { |
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143
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107 if (error_state) |
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108 return; |
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143
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109 |
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110 ostrstream plot_buf; |
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111 |
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112 switch (ndim) |
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113 { |
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476
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114 case 1: |
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478
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115 if (plot_line_count == 0) |
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116 { |
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117 if (plot_list) |
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118 plot_buf << "plot"; |
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119 else |
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120 { |
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121 ::error ("replot: must have something to plot"); |
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122 return; |
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478
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123 } |
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124 } |
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125 else |
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126 plot_buf << "replot"; |
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476
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127 break; |
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1
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128 case 2: |
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478
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129 if (clear_before_plotting || plot_line_count == 0) |
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130 { |
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131 plot_line_count = 0; |
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132 plot_buf << "plot"; |
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133 } |
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134 else |
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135 plot_buf << "replot"; |
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136 break; |
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137 case 3: |
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478
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138 { |
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139 plot_line_count = 0; |
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140 plot_buf << "splot"; |
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141 } |
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1
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142 break; |
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143 default: |
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144 panic_impossible (); |
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145 break; |
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146 } |
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147 |
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524
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148 if (range) |
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478
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149 { |
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150 if (plot_line_count == 0) |
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151 range->print (ndim, plot_buf); |
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152 else |
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153 warning ("can't specify new plot ranges with `replot' or while\ |
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154 hold is on"); |
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155 } |
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1
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156 |
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191
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157 if (error_state) |
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158 return; |
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191
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159 |
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578
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160 for (Pix p = plot_list->first () ; p != 0; plot_list->next (p)) |
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161 { |
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578
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162 subplot *ptr = plot_list->operator () (p); |
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163 |
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164 plot_line_count++; |
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165 |
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578
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166 if (p != plot_list->first ()) |
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167 plot_buf << ",\\\n "; |
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168 |
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169 int status = ptr->print (ndim, plot_buf); |
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170 if (status < 0) |
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171 return; |
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1
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172 } |
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173 |
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174 plot_buf << "\n" << ends; |
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175 |
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176 // Just testing... |
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177 // char *message = plot_buf.str (); |
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178 // cout << "[*]" << message << "[*]\n"; |
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179 |
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180 if (parametric_plot && ndim == 2) |
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181 { |
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182 warning ("can't make 2D parametric plot -- setting noparametric..."); |
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183 send_to_plot_stream ("set noparametric\n"); |
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184 char *message = plot_buf.str (); |
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185 send_to_plot_stream (message); |
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186 delete [] message; |
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187 send_to_plot_stream ("set parametric\n"); |
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188 } |
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189 else |
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190 { |
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191 char *message = plot_buf.str (); |
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192 send_to_plot_stream (message); |
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193 delete [] message; |
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194 } |
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195 } |
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196 |
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197 int |
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578
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198 subplot::print (int ndim, ostrstream& plot_buf) |
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199 { |
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200 int nc = 0; |
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524
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201 if (plot_data) |
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1
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202 { |
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203 tree_constant data = plot_data->eval (0); |
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191
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204 if (! error_state && data.is_defined ()) |
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1
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205 { |
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524
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206 char *file = 0; |
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86
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207 if (data.is_string_type ()) |
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208 { |
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87
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209 file = tilde_expand (data.string_value ()); |
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86
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210 ifstream ftmp (file); |
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211 if (ftmp) |
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212 { |
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213 plot_buf << " \"" << file << '"'; |
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214 free (file); |
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134
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215 goto have_existing_file_or_command; |
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216 } |
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217 else |
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87
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218 { |
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219 free (file); |
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220 file = 0; |
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221 |
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222 // Opening as a file failed. Let's try passing it along as a plot |
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223 // command. |
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224 plot_buf << " " << data.string_value (); |
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225 goto have_existing_file_or_command; |
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87
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226 } |
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86
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227 } |
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228 |
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229 nc = data.columns (); |
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230 switch (ndim) |
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231 { |
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232 case 2: |
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233 file = save_in_tmp_file (data, ndim); |
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234 break; |
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235 case 3: |
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236 file = save_in_tmp_file (data, ndim, parametric_plot); |
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237 break; |
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238 default: |
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239 panic_impossible (); |
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240 break; |
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241 } |
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242 |
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243 if (file) |
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244 { |
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245 mark_for_deletion (file); |
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246 plot_buf << " \"" << file << '"'; |
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247 } |
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248 } |
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249 else |
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250 return -1; |
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251 } |
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252 else |
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253 return -1; |
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254 |
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134
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255 have_existing_file_or_command: |
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256 |
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524
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257 if (using) |
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1
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258 { |
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259 int status = using->print (ndim, nc, plot_buf); |
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260 if (status < 0) |
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261 return -1; |
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262 } |
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263 |
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524
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264 if (title) |
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1
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265 { |
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266 tree_constant tmp = title->eval (0); |
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191
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267 if (! error_state && tmp.is_string_type ()) |
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268 plot_buf << " title " << '"' << tmp.string_value () << '"'; |
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269 else |
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270 { |
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271 warning ("line title must be a string"); |
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272 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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273 } |
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274 } |
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275 else |
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276 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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277 |
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524
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278 if (style) |
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1
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279 { |
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280 int status = style->print (plot_buf); |
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281 if (status < 0) |
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282 return -1; |
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283 } |
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284 |
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285 return 0; |
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286 } |
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287 |
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578
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288 plot_limits::plot_limits (void) |
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289 { |
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524
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290 x_range = 0; |
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291 y_range = 0; |
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292 z_range = 0; |
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293 } |
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294 |
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578
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295 plot_limits::plot_limits (plot_range *xlim) |
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1
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296 { |
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297 x_range = xlim; |
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524
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298 y_range = 0; |
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299 z_range = 0; |
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1
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300 } |
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301 |
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578
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302 plot_limits::plot_limits (plot_range *xlim, |
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303 plot_range *ylim) |
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1
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304 { |
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305 x_range = xlim; |
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306 y_range = ylim; |
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524
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307 z_range = 0; |
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1
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308 } |
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309 |
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578
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310 plot_limits::plot_limits (plot_range *xlim, |
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311 plot_range *ylim, |
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312 plot_range *zlim) |
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1
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313 { |
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314 x_range = xlim; |
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315 y_range = ylim; |
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316 z_range = zlim; |
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317 } |
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318 |
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578
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319 plot_limits::~plot_limits (void) |
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1
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320 { |
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321 delete x_range; |
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322 delete y_range; |
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323 delete z_range; |
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324 } |
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325 |
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326 void |
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578
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327 plot_limits::print (int ndim, ostrstream& plot_buf) |
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1
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328 { |
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329 if (ndim == 2 || ndim == 3) |
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330 { |
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524
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331 if (x_range) |
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1
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332 x_range->print (plot_buf); |
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333 else |
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334 return; |
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335 |
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524
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336 if (y_range) |
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1
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337 y_range->print (plot_buf); |
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338 else |
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339 return; |
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340 } |
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341 |
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524
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342 if (ndim == 3 && z_range) |
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1
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343 z_range->print (plot_buf); |
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344 } |
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345 |
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578
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346 plot_range::plot_range (void) |
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1
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347 { |
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524
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348 lower = 0; |
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349 upper = 0; |
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1
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350 } |
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351 |
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578
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352 plot_range::plot_range (tree_expression *l, tree_expression *u) |
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1
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353 { |
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354 lower = l; |
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355 upper = u; |
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356 } |
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357 |
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578
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358 plot_range::~plot_range (void) |
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1
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359 { |
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360 delete lower; |
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361 delete upper; |
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362 } |
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363 |
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364 void |
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578
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365 plot_range::print (ostrstream& plot_buf) |
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1
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366 { |
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367 plot_buf << " ["; |
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368 |
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524
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369 if (lower) |
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1
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370 { |
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371 tree_constant lower_val = lower->eval (0); |
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191
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372 if (error_state) |
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373 { |
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240
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374 ::error ("evaluating lower bound of plot range"); |
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191
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375 return; |
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376 } |
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377 else |
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378 { |
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379 double lo = lower_val.to_scalar (); |
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380 plot_buf << lo; |
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381 } |
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1
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382 } |
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383 |
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384 plot_buf << ":"; |
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385 |
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524
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386 if (upper) |
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1
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387 { |
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388 tree_constant upper_val = upper->eval (0); |
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191
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389 if (error_state) |
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390 { |
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240
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391 ::error ("evaluating upper bound of plot range"); |
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191
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392 return; |
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393 } |
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394 else |
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395 { |
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396 double hi = upper_val.to_scalar (); |
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397 plot_buf << hi; |
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398 } |
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1
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399 } |
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400 |
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401 plot_buf << "]"; |
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402 } |
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403 |
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578
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404 subplot_using::subplot_using (void) |
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1
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405 { |
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406 qualifier_count = 0; |
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524
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407 x[0] = 0; |
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408 x[1] = 0; |
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409 x[2] = 0; |
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410 x[3] = 0; |
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411 scanf_fmt = 0; |
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1
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412 } |
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413 |
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578
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414 subplot_using::subplot_using (tree_expression *fmt) |
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1
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415 { |
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416 qualifier_count = 0; |
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524
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417 x[0] = 0; |
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418 x[1] = 0; |
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419 x[2] = 0; |
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420 x[3] = 0; |
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1
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421 scanf_fmt = fmt; |
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422 } |
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423 |
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578
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424 subplot_using::~subplot_using (void) |
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1
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425 { |
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426 delete scanf_fmt; |
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427 } |
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428 |
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578
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429 subplot_using * |
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430 subplot_using::set_format (tree_expression *fmt) |
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1
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431 { |
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432 scanf_fmt = fmt; |
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433 return this; |
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434 } |
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435 |
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578
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436 subplot_using * |
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437 subplot_using::add_qualifier (tree_expression *t) |
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1
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438 { |
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439 if (qualifier_count < 4) |
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440 x[qualifier_count] = t; |
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441 |
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442 qualifier_count++; |
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443 |
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444 return this; |
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445 } |
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446 |
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447 int |
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578
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448 subplot_using::print (int ndim, int n_max, ostrstream& plot_buf) |
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1
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449 { |
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450 if ((ndim == 2 && qualifier_count > 4) |
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451 || (ndim == 3 && qualifier_count > 3)) |
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452 return -1; |
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453 |
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454 for (int i = 0; i < qualifier_count; i++) |
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455 { |
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524
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456 if (x[i]) |
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1
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457 { |
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458 tree_constant tmp = x[i]->eval (0); |
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191
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459 if (error_state) |
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460 { |
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240
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461 ::error ("evaluating plot using command"); |
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191
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462 return -1; |
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463 } |
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464 |
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1
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465 double val; |
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466 if (tmp.is_defined ()) |
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467 { |
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468 val = tmp.to_scalar (); |
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469 if (i == 0) |
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470 plot_buf << " using "; |
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471 else |
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472 plot_buf << ":"; |
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473 |
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474 int n = NINT (val); |
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475 |
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322
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476 if (n < 1 || n_max > 0 && n > n_max) |
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1
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477 { |
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240
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478 ::error ("using: column %d out of range", n); |
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1
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479 return -1; |
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480 } |
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481 else |
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482 plot_buf << n; |
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483 } |
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484 else |
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485 return -1; |
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486 } |
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487 else |
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488 return -1; |
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489 } |
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490 |
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524
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491 if (scanf_fmt) |
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1
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492 warning ("ignoring scanf format in plot command"); |
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493 |
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494 return 0; |
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495 } |
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496 |
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578
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497 subplot_style::subplot_style (void) |
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1
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498 { |
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524
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499 style = 0; |
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500 linetype = 0; |
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501 pointtype = 0; |
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1
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502 } |
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503 |
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578
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504 subplot_style::subplot_style (char *s) |
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1
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505 { |
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506 style = strsave (s); |
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524
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507 linetype = 0; |
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508 pointtype = 0; |
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1
|
509 } |
|
|
510 |
|
578
|
511 subplot_style::subplot_style (char *s, tree_expression *lt) |
|
1
|
512 { |
|
|
513 style = strsave (s); |
|
|
514 linetype = lt; |
|
524
|
515 pointtype = 0; |
|
1
|
516 } |
|
|
517 |
|
578
|
518 subplot_style::subplot_style (char *s, tree_expression *lt, |
|
491
|
519 tree_expression *pt) |
|
1
|
520 { |
|
|
521 style = strsave (s); |
|
|
522 linetype = lt; |
|
|
523 pointtype = pt; |
|
|
524 } |
|
|
525 |
|
578
|
526 subplot_style::~subplot_style (void) |
|
1
|
527 { |
|
|
528 delete [] style; |
|
|
529 delete linetype; |
|
|
530 delete pointtype; |
|
|
531 } |
|
|
532 |
|
|
533 int |
|
578
|
534 subplot_style::print (ostrstream& plot_buf) |
|
1
|
535 { |
|
524
|
536 if (style) |
|
1
|
537 { |
|
|
538 plot_buf << " with " << style; |
|
|
539 |
|
524
|
540 if (linetype) |
|
1
|
541 { |
|
|
542 tree_constant tmp = linetype->eval (0); |
|
191
|
543 if (! error_state && tmp.is_defined ()) |
|
1
|
544 { |
|
|
545 double val = tmp.to_scalar (); |
|
|
546 plot_buf << " " << NINT (val); |
|
|
547 } |
|
|
548 else |
|
191
|
549 { |
|
240
|
550 ::error ("evaluating plot style command"); |
|
191
|
551 return -1; |
|
|
552 } |
|
1
|
553 } |
|
|
554 |
|
524
|
555 if (pointtype) |
|
1
|
556 { |
|
|
557 tree_constant tmp = pointtype->eval (0); |
|
191
|
558 if (! error_state && tmp.is_defined ()) |
|
1
|
559 { |
|
|
560 double val = tmp.to_scalar (); |
|
|
561 plot_buf << " " << NINT (val); |
|
|
562 } |
|
|
563 else |
|
191
|
564 { |
|
240
|
565 ::error ("evaluating plot style command"); |
|
191
|
566 return -1; |
|
|
567 } |
|
1
|
568 } |
|
|
569 } |
|
|
570 else |
|
|
571 return -1; |
|
|
572 |
|
|
573 return 0; |
|
|
574 } |
|
|
575 |
|
524
|
576 char * |
|
|
577 save_in_tmp_file (tree_constant& t, int ndim, int parametric) |
|
|
578 { |
|
|
579 char *name = strsave (tmpnam (0)); |
|
|
580 if (name) |
|
|
581 { |
|
|
582 ofstream file (name); |
|
|
583 if (file) |
|
|
584 { |
|
|
585 switch (ndim) |
|
|
586 { |
|
|
587 case 2: |
|
|
588 t.save (file); |
|
|
589 break; |
|
|
590 case 3: |
|
|
591 t.save_three_d (file, parametric); |
|
|
592 break; |
|
|
593 default: |
|
|
594 panic_impossible (); |
|
|
595 break; |
|
|
596 } |
|
|
597 } |
|
|
598 else |
|
|
599 { |
|
|
600 error ("couldn't open temporary output file `%s'", name); |
|
|
601 delete [] name; |
|
|
602 name = 0; |
|
|
603 } |
|
|
604 } |
|
|
605 return name; |
|
|
606 } |
|
|
607 |
|
|
608 void |
|
|
609 mark_for_deletion (const char *filename) |
|
|
610 { |
|
|
611 char *tmp = strsave (filename); |
|
|
612 tmp_files.push (tmp); |
|
|
613 } |
|
|
614 |
|
|
615 void |
|
|
616 cleanup_tmp_files (void) |
|
|
617 { |
|
|
618 while (! tmp_files.empty ()) |
|
|
619 { |
|
|
620 char *filename = tmp_files.pop (); |
|
|
621 unlink (filename); |
|
|
622 delete [] filename; |
|
|
623 } |
|
|
624 } |
|
|
625 |
|
|
626 int |
|
|
627 send_to_plot_stream (const char *cmd) |
|
|
628 { |
|
|
629 // From sighandlers.cc: |
|
|
630 extern int pipe_handler_error_count; |
|
|
631 |
|
|
632 static int initialized = 0; |
|
|
633 |
|
|
634 if (! plot_stream.is_open ()) |
|
|
635 { |
|
|
636 plot_line_count = 0; |
|
|
637 |
|
|
638 char *plot_prog = user_pref.gnuplot_binary; |
|
|
639 if (plot_prog) |
|
|
640 { |
|
|
641 plot_stream.open (plot_prog); |
|
|
642 if (! plot_stream.is_open ()) |
|
|
643 { |
|
|
644 warning ("plot: unable to open pipe to `%s'", |
|
|
645 plot_prog); |
|
|
646 |
|
|
647 if (strcmp (plot_prog, "gnuplot") != 0) |
|
|
648 { |
|
|
649 warning ("having trouble finding plotting program."); |
|
|
650 warning ("trying again with `gnuplot'"); |
|
|
651 goto last_chance; |
|
|
652 } |
|
|
653 } |
|
|
654 } |
|
|
655 else |
|
|
656 { |
|
|
657 last_chance: |
|
|
658 |
|
|
659 plot_stream.open ("gnuplot"); |
|
|
660 |
|
|
661 if (! plot_stream.is_open ()) |
|
|
662 { |
|
|
663 error ("plot: unable to open pipe to `%s'", plot_prog); |
|
|
664 return -1; |
|
|
665 } |
|
|
666 } |
|
|
667 } |
|
|
668 |
|
|
669 if (! initialized) |
|
|
670 { |
|
|
671 initialized = 1; |
|
|
672 plot_stream << "set data style lines\n"; |
|
|
673 } |
|
|
674 |
|
|
675 plot_stream << cmd; |
|
|
676 plot_stream.flush (); |
|
|
677 pipe_handler_error_count = 0; |
|
|
678 |
|
|
679 return 0; |
|
|
680 } |
|
|
681 |
|
|
682 void |
|
|
683 close_plot_stream (void) |
|
|
684 { |
|
|
685 if (plot_stream.is_open ()) |
|
|
686 plot_stream.close (); |
|
|
687 |
|
|
688 plot_line_count = 0; |
|
|
689 } |
|
|
690 |
|
|
691 DEFUN ("closeplot", Fcloseplot, Scloseplot, 1, 0, |
|
|
692 "closeplot (): close the stream to plotter") |
|
|
693 { |
|
|
694 Octave_object retval; |
|
|
695 close_plot_stream (); |
|
|
696 return retval; |
|
|
697 } |
|
|
698 |
|
|
699 DEFUN_TEXT ("hold", Fhold, Shold, -1, 1, |
|
|
700 "hold [on|off]\n\ |
|
|
701 \n\ |
|
|
702 determine whether the plot window is cleared before the next line is\n\ |
|
|
703 drawn. With no argument, toggle the current state.") |
|
|
704 { |
|
|
705 Octave_object retval; |
|
|
706 |
|
|
707 DEFINE_ARGV("hold"); |
|
|
708 |
|
|
709 switch (argc) |
|
|
710 { |
|
|
711 case 1: |
|
|
712 clear_before_plotting = ! clear_before_plotting; |
|
|
713 break; |
|
|
714 case 2: |
|
|
715 if (strcasecmp (argv[1], "on") == 0) |
|
|
716 clear_before_plotting = 0; |
|
|
717 else if (strcasecmp (argv[1], "off") == 0) |
|
|
718 clear_before_plotting = 1; |
|
|
719 else |
|
|
720 print_usage ("hold"); |
|
|
721 break; |
|
|
722 default: |
|
|
723 print_usage ("hold"); |
|
|
724 break; |
|
|
725 } |
|
|
726 |
|
|
727 DELETE_ARGV; |
|
|
728 |
|
|
729 return retval; |
|
|
730 } |
|
|
731 |
|
|
732 DEFUN ("purge_tmp_files", Fpurge_tmp_files, Spurge_tmp_files, 5, 1, |
|
|
733 "delete temporary data files used for plotting") |
|
|
734 { |
|
|
735 Octave_object retval; |
|
|
736 cleanup_tmp_files (); |
|
|
737 return retval; |
|
|
738 } |
|
|
739 |
|
|
740 DEFUN_TEXT ("set", Fset, Sset, -1, 1, |
|
|
741 "set [options]\n\ |
|
|
742 \n\ |
|
|
743 set plotting options") |
|
|
744 { |
|
|
745 Octave_object retval; |
|
|
746 |
|
|
747 DEFINE_ARGV("set"); |
|
|
748 |
|
|
749 ostrstream plot_buf; |
|
|
750 |
|
|
751 if (argc > 1) |
|
|
752 { |
|
|
753 if (almost_match ("parametric", argv[1], 3)) |
|
|
754 parametric_plot = 1; |
|
|
755 else if (almost_match ("noparametric", argv[1], 5)) |
|
|
756 parametric_plot = 0; |
|
|
757 } |
|
|
758 |
|
|
759 for (int i = 0; i < argc; i++) |
|
|
760 plot_buf << argv[i] << " "; |
|
|
761 |
|
|
762 plot_buf << "\n" << ends; |
|
|
763 |
|
|
764 char *plot_command = plot_buf.str (); |
|
|
765 send_to_plot_stream (plot_command); |
|
|
766 |
|
|
767 delete [] plot_command; |
|
|
768 |
|
|
769 DELETE_ARGV; |
|
|
770 |
|
|
771 return retval; |
|
|
772 } |
|
|
773 |
|
|
774 /* |
|
|
775 * Set plotting options. |
|
|
776 */ |
|
|
777 DEFUN_TEXT ("show", Fshow, Sshow, -1, 1, |
|
|
778 "show [options]\n\ |
|
|
779 \n\ |
|
|
780 show plotting options") |
|
|
781 { |
|
|
782 Octave_object retval; |
|
|
783 |
|
|
784 DEFINE_ARGV("show"); |
|
|
785 |
|
|
786 ostrstream plot_buf; |
|
|
787 |
|
|
788 for (int i = 0; i < argc; i++) |
|
|
789 plot_buf << argv[i] << " "; |
|
|
790 |
|
|
791 plot_buf << "\n" << ends; |
|
|
792 |
|
|
793 char *plot_command = plot_buf.str (); |
|
|
794 send_to_plot_stream (plot_command); |
|
|
795 |
|
|
796 delete [] plot_command; |
|
|
797 |
|
|
798 DELETE_ARGV; |
|
|
799 |
|
|
800 return retval; |
|
|
801 } |
|
|
802 |
|
1
|
803 /* |
|
|
804 ;;; Local Variables: *** |
|
|
805 ;;; mode: C++ *** |
|
|
806 ;;; page-delimiter: "^/\\*" *** |
|
|
807 ;;; End: *** |
|
|
808 */ |
