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annotate src/ov-base-sparse.cc @ 10512:aac9f4265048

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rewrite sparse indexed assignment
author Jaroslav Hajek <highegg@gmail.com>
date Tue, 13 Apr 2010 12:36:21 +0200
parents fdccd69d26bd
children c5005bc2b7a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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eb63fbe60fab update copyright notices
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3 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 David Bateman
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4 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Andy Adler
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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 3 of the License, or (at your
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11 option) any 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, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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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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28 #include <iomanip>
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29 #include <iostream>
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30
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31 #include "oct-obj.h"
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32 #include "ov-base.h"
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33 #include "quit.h"
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34 #include "pr-output.h"
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35
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36 #include "byte-swap.h"
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37 #include "ls-oct-ascii.h"
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38 #include "ls-utils.h"
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39 #include "ls-hdf5.h"
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40
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41 #include "boolSparse.h"
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42 #include "ov-base-sparse.h"
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43 #include "pager.h"
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44
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45 template <class T>
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46 octave_value
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47 octave_base_sparse<T>::do_index_op (const octave_value_list& idx,
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48 bool resize_ok)
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49 {
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50 octave_value retval;
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51
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52 octave_idx_type n_idx = idx.length ();
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53
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54 switch (n_idx)
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55 {
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56 case 0:
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57 retval = matrix;
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58 break;
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59
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60 case 1:
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61 {
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62 idx_vector i = idx (0).index_vector ();
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63
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64 if (! error_state)
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65 retval = octave_value (matrix.index (i, resize_ok));
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66 }
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67 break;
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68
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69 case 2:
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70 {
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71 idx_vector i = idx (0).index_vector ();
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72
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73 if (! error_state)
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74 {
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75 idx_vector j = idx (1).index_vector ();
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76
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77 if (! error_state)
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78 retval = octave_value (matrix.index (i, j, resize_ok));
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79 }
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80 }
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81 break;
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82 default:
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83 error ("sparse indexing needs 1 or 2 indices");
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84 }
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85
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86 return retval;
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87 }
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88
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89 template <class T>
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90 octave_value
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91 octave_base_sparse<T>::subsref (const std::string& type,
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92 const std::list<octave_value_list>& idx)
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93 {
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94 octave_value retval;
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95
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96 switch (type[0])
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97 {
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98 case '(':
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99 retval = do_index_op (idx.front ());
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100 break;
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101
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102 case '{':
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103 case '.':
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104 {
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105 std::string nm = type_name ();
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106 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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107 }
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108 break;
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109
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110 default:
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111 panic_impossible ();
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112 }
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113
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114 return retval.next_subsref (type, idx);
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115 }
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116
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117 template <class T>
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118 octave_value
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119 octave_base_sparse<T>::subsasgn (const std::string& type,
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120 const std::list<octave_value_list>& idx,
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121 const octave_value& rhs)
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122 {
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123 octave_value retval;
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124
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125 switch (type[0])
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126 {
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127 case '(':
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128 {
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129 if (type.length () == 1)
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130 retval = numeric_assign (type, idx, rhs);
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131 else
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132 {
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133 std::string nm = type_name ();
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134 error ("in indexed assignment of %s, last lhs index must be ()",
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135 nm.c_str ());
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136 }
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137 }
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138 break;
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139
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140 case '{':
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141 case '.':
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142 {
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143 if (is_empty ())
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144 {
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145 octave_value tmp = octave_value::empty_conv (type, rhs);
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146
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147 retval = tmp.subsasgn (type, idx, rhs);
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148 }
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149 else
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150 {
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151 std::string nm = type_name ();
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152 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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153 }
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154 }
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155 break;
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156
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157 default:
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158 panic_impossible ();
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159 }
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160
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161 return retval;
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162 }
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163
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164 template <class T>
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165 void
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166 octave_base_sparse<T>::assign (const octave_value_list& idx, const T& rhs)
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167 {
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168
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169 octave_idx_type len = idx.length ();
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170
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171 switch (len)
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172 {
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173 case 1:
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174 {
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175 idx_vector i = idx (0).index_vector ();
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176
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177 if (! error_state)
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178 matrix.assign (i, rhs);
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179
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180 break;
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181 }
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182
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183 case 2:
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184 {
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185 idx_vector i = idx (0).index_vector ();
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186
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187 if (! error_state)
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188 {
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189 idx_vector j = idx (1).index_vector ();
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190
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191 if (! error_state)
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192 matrix.assign (i, j, rhs);
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193 }
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194
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195 break;
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196 }
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197
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198 default:
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199 error ("sparse indexing needs 1 or 2 indices");
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200 }
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201
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202
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203 // Invalidate matrix type.
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204 typ.invalidate_type ();
5164
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205 }
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206
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207 template <class MT>
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208 void
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209 octave_base_sparse<MT>::delete_elements (const octave_value_list& idx)
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210 {
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211 octave_idx_type len = idx.length ();
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212
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213 switch (len)
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214 {
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215 case 1:
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216 {
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217 idx_vector i = idx (0).index_vector ();
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218
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219 if (! error_state)
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220 matrix.delete_elements (i);
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221
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222 break;
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223 }
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224
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225 case 2:
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226 {
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227 idx_vector i = idx (0).index_vector ();
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228
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229 if (! error_state)
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230 {
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231 idx_vector j = idx (1).index_vector ();
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232
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233 if (! error_state)
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234 matrix.delete_elements (i, j);
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235 }
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236
fdccd69d26bd rewrite sparse null assignment (part 2)
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237 break;
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238 }
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239
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240 default:
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241 error ("sparse indexing needs 1 or 2 indices");
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242 }
8150
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243
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244 // Invalidate the matrix type
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245 typ.invalidate_type ();
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246 }
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247
5731
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248 template <class T>
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249 octave_value
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250 octave_base_sparse<T>::resize (const dim_vector& dv, bool) const
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251 {
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252 T retval (matrix);
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253 retval.resize (dv);
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254 return retval;
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255 }
5164
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256
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257 template <class T>
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258 bool
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259 octave_base_sparse<T>::is_true (void) const
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260 {
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261 bool retval = false;
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262 dim_vector dv = matrix.dims ();
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263 octave_idx_type nel = dv.numel ();
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264 octave_idx_type nz = nzmax ();
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265
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266 if (nz == nel && nel > 0)
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267 {
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268 T t1 (matrix.reshape (dim_vector (nel, 1)));
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269
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270 SparseBoolMatrix t2 = t1.all ();
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271
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272 retval = t2(0);
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273 }
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274
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275 return retval;
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276 }
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277
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278 template <class T>
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279 bool
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280 octave_base_sparse<T>::print_as_scalar (void) const
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281 {
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282 dim_vector dv = dims ();
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283
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284 return (dv.all_ones () || dv.any_zero ());
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285 }
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286
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287 template <class T>
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288 void
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289 octave_base_sparse<T>::print (std::ostream& os, bool pr_as_read_syntax) const
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290 {
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diff changeset
291 print_raw (os, pr_as_read_syntax);
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292 newline (os);
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293 }
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294
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295 template <class T>
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296 void
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297 octave_base_sparse<T>::print_info (std::ostream& os,
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298 const std::string& prefix) const
5164
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299 {
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300 matrix.print_info (os, prefix);
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301 }
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302
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303 template <class T>
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diff changeset
304 void
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diff changeset
305 octave_base_sparse<T>::print_raw (std::ostream& os,
10315
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diff changeset
306 bool pr_as_read_syntax) const
5164
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307 {
5275
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diff changeset
308 octave_idx_type nr = matrix.rows ();
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diff changeset
309 octave_idx_type nc = matrix.cols ();
5604
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310 octave_idx_type nz = nnz ();
5164
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311
5775
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312 // FIXME -- this should probably all be handled by a
5355
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diff changeset
313 // separate octave_print_internal function that can handle format
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diff changeset
314 // compact, loose, etc.
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diff changeset
315
cf44c749ba52 [project @ 2005-05-18 11:43:37 by jwe]
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diff changeset
316 os << "Compressed Column Sparse (rows = " << nr
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diff changeset
317 << ", cols = " << nc
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diff changeset
318 << ", nnz = " << nz;
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diff changeset
319
91d7440211e7 display percentage of elements that are nonzero when printing sparse matrices
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320 double dnel = matrix.numel ();
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321
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322 if (dnel > 0)
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323 os << " [" << std::setprecision (2) << (nz / dnel * 100) << "%]";
7644
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324
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325 os << ")\n";
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326
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327 // add one to the printed indices to go from
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328 // zero-based to one-based arrays
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329
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330 if (nz != 0)
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331 {
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332 for (octave_idx_type j = 0; j < nc; j++)
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333 {
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334 octave_quit ();
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335
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336 // FIXME -- is there an easy way to get the max row
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337 // and column indices so we can set the width appropriately
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338 // and line up the columns here? Similarly, we should look
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339 // at all the nonzero values and display them with the same
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340 // formatting rules that apply to columns of a matrix.
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341
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342 for (octave_idx_type i = matrix.cidx(j); i < matrix.cidx(j+1); i++)
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343 {
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344 os << "\n";
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345 os << " (" << matrix.ridx(i)+1 <<
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346 ", " << j+1 << ") -> ";
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347
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348 octave_print_internal (os, matrix.data(i), pr_as_read_syntax);
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349 }
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350 }
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351 }
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352 }
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353
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354 template <class T>
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355 bool
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356 octave_base_sparse<T>::save_ascii (std::ostream& os)
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357 {
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358 dim_vector dv = this->dims ();
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359
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360 // Ensure that additional memory is deallocated
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361 matrix.maybe_compress ();
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362
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363 os << "# nnz: " << nzmax () << "\n";
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364 os << "# rows: " << dv (0) << "\n";
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365 os << "# columns: " << dv (1) << "\n";
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366
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367 os << this->matrix;
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368
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369 return true;
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370 }
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371
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372 template <class T>
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373 bool
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374 octave_base_sparse<T>::load_ascii (std::istream& is)
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375 {
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376 octave_idx_type nz = 0;
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377 octave_idx_type nr = 0;
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378 octave_idx_type nc = 0;
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379 bool success = true;
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380
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381 if (extract_keyword (is, "nnz", nz, true) &&
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diff changeset
382 extract_keyword (is, "rows", nr, true) &&
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jwe
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diff changeset
383 extract_keyword (is, "columns", nc, true))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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diff changeset
384 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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diff changeset
385 T tmp (nr, nc, nz);
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diff changeset
386
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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387 is >> tmp;
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388
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diff changeset
389 if (!is)
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diff changeset
390 {
57a59eae83cc untabify src C++ source files
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diff changeset
391 error ("load: failed to load matrix constant");
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392 success = false;
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393 }
5164
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394
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395 matrix = tmp;
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396 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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397 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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diff changeset
398 {
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diff changeset
399 error ("load: failed to extract number of rows and columns");
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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400 success = false;
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diff changeset
401 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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diff changeset
402
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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403 return success;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
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diff changeset
404 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
405
9813
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diff changeset
406 template <class T>
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diff changeset
407 octave_value
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diff changeset
408 octave_base_sparse<T>::map (octave_base_value::unary_mapper_t umap) const
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diff changeset
409 {
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diff changeset
410 // Try the map on the dense value.
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diff changeset
411 octave_value retval = this->full_value ().map (umap);
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diff changeset
412
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diff changeset
413 // Sparsify the result if possible.
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diff changeset
414 // FIXME: intentionally skip this step for string mappers. Is this wanted?
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diff changeset
415 if (umap >= umap_xisalnum && umap <= umap_xtoupper)
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diff changeset
416 return retval;
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diff changeset
417
8fa32b527d9a improve & partially revert previous change
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diff changeset
418 switch (retval.builtin_type ())
8fa32b527d9a improve & partially revert previous change
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diff changeset
419 {
8fa32b527d9a improve & partially revert previous change
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diff changeset
420 case btyp_double:
8fa32b527d9a improve & partially revert previous change
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diff changeset
421 retval = retval.sparse_matrix_value ();
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diff changeset
422 break;
8fa32b527d9a improve & partially revert previous change
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diff changeset
423 case btyp_complex:
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diff changeset
424 retval = retval.sparse_complex_matrix_value ();
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diff changeset
425 break;
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diff changeset
426 case btyp_bool:
8fa32b527d9a improve & partially revert previous change
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diff changeset
427 retval = retval.sparse_bool_matrix_value ();
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diff changeset
428 break;
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diff changeset
429 default:
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diff changeset
430 break;
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diff changeset
431 }
8fa32b527d9a improve & partially revert previous change
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diff changeset
432
8fa32b527d9a improve & partially revert previous change
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diff changeset
433 return retval;
8fa32b527d9a improve & partially revert previous change
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diff changeset
434 }