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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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18 ## 02111-1307, USA. |
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19 |
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20 ## usage: fmt = __pltopt__ (caller, opt) |
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21 ## |
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22 ## Decode plot option strings. |
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23 ## |
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24 ## If OPT is a valid option string, return a string of the form "w l 2" |
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25 ## ("with lines 2"). Uses abbreviations for the options to avoid |
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26 ## overrunning gnuplot's command line buffer unnecessarily. |
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27 ## |
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28 ## OPT can currently be some combination of the following: |
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29 ## |
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30 ## "-" for lines plot style (default). |
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31 ## "." for dots plot style. |
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32 ## "@" for points plot style. |
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33 ## "-@" for linespoints plot style. |
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34 ## "^" for impulses plot style. |
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35 ## "L" for steps plot style. |
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36 ## "#" for boxes plot style. |
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37 ## "~" for errorbars plot style. |
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38 ## "#~" for boxerrorbars plot style. |
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39 ## "n" with n in 1-6 (wraps at 8), plot color |
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40 ## "nm" with m in 1-6 (wraps at 6), point style (only valid for "@" or "-@") |
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41 ## "c" where c is one of ["r", "g", "b", "m", "c", "w"] colors. |
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42 ## ";title;" where "title" is the label for the key. |
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43 ## |
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44 ## Special points formats: |
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45 ## |
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46 ## "+", "*", "o", "x" will display points in that style for term x11. |
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47 ## |
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48 ## The legend may be fixed to include the name of the variable |
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49 ## plotted in some future version of Octave. |
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50 ## |
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51 ## The colors, line styles, and point styles have the following |
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52 ## meanings for X11 and Postscript terminals under Gnuplot 3.6. |
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53 ## |
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54 ## Number ------ Color ------- Line Style ---- Points Style ---- |
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55 ## x11 postscript postscript x11 postscript |
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56 ## ===================================================================== |
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57 ## 1 red green solid "o" "+" |
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58 ## 2 green blue long dash "+" "x" |
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59 ## 3 blue red short dash square "*" |
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60 ## 4 magenta magenta dotted "x" open square |
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61 ## 5 cyan cyan dot long dash triangle filled square |
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62 ## 6 brown yellow dot short dash "*" "o" |
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63 |
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64 ## Author: Rick Niles <niles@axp745.gsfc.nasa.gov> |
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65 ## Adapted-By: jwe |
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66 ## Maintainer: jwe |
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67 |
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68 function fmt = __pltopt__ (caller, opt) |
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69 |
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70 set_color = 0; |
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71 set_symbol = 0; |
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72 set_lines = 0; |
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73 set_dots = 0; |
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74 set_points = 0; |
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75 set_impulses = 0; |
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76 set_steps = 0; |
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77 set_boxes = 0; |
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78 set_errbars = 0; |
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79 set_key = 0; |
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80 more_opts = 1; |
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81 |
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82 WITH = "w"; |
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83 LINES = "l"; |
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84 LINESPOINTS = "linesp"; |
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85 BOXERRORBARS = "boxer"; |
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86 BOXES = "boxes"; |
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87 POINTS = "p"; |
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88 DOTS = "d"; |
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89 IMPULSES = "i"; |
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90 STEPS = "s"; |
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91 ERRORBARS = "e"; |
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92 TITLE = "title"; |
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93 |
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94 if (nargin != 2) |
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95 usage ("__pltopt__ (opt)"); |
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96 endif |
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97 |
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98 if (! isstr (opt)) |
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99 error ("__pltopt__: argument must be a string"); |
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100 endif |
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101 |
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102 while (more_opts) |
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103 |
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104 ## First get next char. |
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105 |
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106 if (max (size (opt)) > 1) |
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107 # [char, opt] = sscanf (opt, "%c %s", "C"); |
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108 char = opt(1); |
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109 opt = opt(2:length(opt)); |
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110 else |
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111 char = opt; |
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112 more_opts = 0; |
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113 endif |
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114 |
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115 ## Now set flags based on char. |
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116 |
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117 if (strcmp (char, "-")) |
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118 set_lines = 1; |
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119 elseif (strcmp (char, ".")) |
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120 set_dots = 1; |
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121 elseif (strcmp (char, "@")) |
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122 set_points = 1; |
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123 elseif (strcmp (char, "^")) |
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124 set_impulses = 1; |
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125 elseif (strcmp (char, "L")) |
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126 set_steps = 1; |
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127 elseif (strcmp (char, "~")) |
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128 set_errbars = 1; |
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129 elseif (strcmp (char, "#")) |
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130 set_boxes = 1; |
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131 elseif (strcmp (char, "0") || strcmp (char, "1") ... |
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132 || strcmp (char, "2") || strcmp (char, "3") ... |
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133 || strcmp (char, "4") || strcmp (char, "5") ... |
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134 || strcmp (char, "6") || strcmp (char, "7") ... |
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135 || strcmp (char, "8") || strcmp (char, "9")) |
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136 if (set_color) |
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137 set_points = 1; |
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138 symbol = char; |
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139 set_symbol = 1; |
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140 else |
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141 color = char; |
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142 set_color = 1; |
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143 endif |
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144 elseif (strcmp (char, "r")) |
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145 set_color = 1; |
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146 color = "1"; |
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147 elseif (strcmp (char, "g")) |
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148 set_color = 1; |
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149 color = "2"; |
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150 elseif (strcmp (char, "b")) |
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151 set_color = 1; |
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152 color = "3"; |
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153 elseif (strcmp (char, "m")) |
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154 set_color = 1; |
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155 color = "4"; |
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156 elseif (strcmp (char, "c")) |
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157 set_color = 1; |
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158 color = "5"; |
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159 elseif (strcmp (char, "w")) |
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160 set_color = 1; |
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161 color = "6"; |
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162 elseif (strcmp (char, "*")) |
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163 set_points = 1; |
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164 set_symbol = 1; |
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165 symbol = "6"; |
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166 elseif (strcmp (char, "+")) |
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167 set_points = 1; |
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168 set_symbol = 1; |
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169 symbol = "2"; |
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170 elseif (strcmp (char, "o")) |
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171 set_points = 1; |
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172 set_symbol = 1; |
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173 symbol = "1"; |
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174 elseif (strcmp (char, "x")) |
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175 set_points = 1; |
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176 set_symbol = 1; |
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177 symbol = "4"; |
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178 elseif (strcmp (char, ";")) # title mode. |
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179 set_key = 1; |
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180 working = 1; |
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181 key_title = ""; |
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182 while (working) |
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183 if (max (size (opt)) > 1) |
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184 char = opt(1); |
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185 opt = opt(2:length(opt)); |
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186 else |
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187 char = opt; |
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188 if (! strcmp (char, ";")) |
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189 error ("%s: unfinished key label", caller); |
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190 end |
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191 more_opts = 0; |
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192 working = 0; |
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193 endif |
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194 if strcmp (char, ";") |
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195 working = 0; |
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196 else |
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197 if (isempty (key_title)) # needs this to avoid empty matrix warning. |
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198 key_title = char; |
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199 else |
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200 key_title = strcat (key_title, char); |
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201 endif |
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202 endif |
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203 endwhile |
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204 elseif (strcmp (char, " ")) |
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205 ## whitespace -- do nothing. |
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206 else |
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207 error ("%s: unrecognized format character: '%s'", caller, char); |
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208 endif |
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209 endwhile |
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210 |
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211 ## Now create format string. |
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212 |
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213 fmt = WITH; |
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214 |
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215 if (set_lines) |
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216 if (set_points) |
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217 fmt = strcat (fmt, " ", LINESPOINTS); |
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218 else |
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219 fmt = strcat (fmt, " ", LINES); |
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220 endif |
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221 elseif (set_boxes) |
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222 if (set_errbars) |
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223 fmt = strcat (fmt, " ", BOXERRORBARS); |
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224 else |
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225 fmt = strcat (fmt, " ", BOXES); |
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226 endif |
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227 elseif (set_points) |
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228 fmt = strcat (fmt, " ", POINTS); |
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229 elseif (set_dots) |
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230 fmt = strcat (fmt, " ", DOTS); |
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231 elseif (set_impulses) |
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232 fmt = strcat (fmt, " ", IMPULSES); |
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233 elseif (set_steps) |
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234 fmt = strcat (fmt, " ", STEPS); |
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235 elseif (set_errbars) |
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236 fmt = strcat (fmt, " ", ERRORBARS); |
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237 endif |
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238 |
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239 if (strcmp (fmt, WITH)) |
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240 fmt = strcat (fmt, " ", LINES); |
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241 endif |
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242 |
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243 if (set_color) |
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244 fmt = strcat (fmt, " ", color); |
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245 if (set_symbol) |
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246 fmt = strcat (fmt, " ", symbol); |
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247 endif |
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248 elseif (set_symbol) |
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249 fmt = strcat (fmt, " 1 ", symbol); |
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250 endif |
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251 |
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252 if (set_key) |
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253 fmt = sprintf ("%s %s \"%s\" ", fmt, TITLE, key_title); |
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254 endif |
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255 endfunction |
