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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 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} __pltopt1__ (@var{caller}, @var{opt}) |
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22 ## Really decode plot option strings. |
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23 ## @end deftypefn |
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24 ## |
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25 ## @seealso{__pltopt__} |
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26 |
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27 ## Author: Rick Niles <niles@axp745.gsfc.nasa.gov> |
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28 ## Adapted-By: jwe |
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29 ## Maintainer: jwe |
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30 |
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31 function fmt = __pltopt1__ (caller, opt) |
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32 |
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33 set_color = 0; |
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34 set_symbol = 0; |
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35 set_lines = 0; |
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36 set_dots = 0; |
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37 set_points = 0; |
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38 set_impulses = 0; |
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39 set_steps = 0; |
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40 set_boxes = 0; |
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41 set_yerrbars = 0; |
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42 set_xerrbars = 0; |
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43 set_linestyle = "solid"; |
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44 |
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45 key_title = ""; |
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46 |
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47 more_opts = 1; |
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48 |
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49 WITH = "w"; |
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50 LINES = "l"; |
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51 LINESPOINTS = "linesp"; |
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52 BOXERRORBARS = "boxer"; |
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53 BOXES = "boxes"; |
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54 BOXXY = "boxxy"; |
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55 POINTS = "p"; |
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56 DOTS = "d"; |
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57 IMPULSES = "i"; |
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58 STEPS = "s"; |
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59 YERRORBARS = "yerr"; |
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60 XERRORBARS = "xerr"; |
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61 XYERRORBARS = "xyerr"; |
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62 TITLE = "title"; |
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63 |
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64 if (nargin != 2) |
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65 usage ("__pltopt1__ (opt)"); |
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66 endif |
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67 |
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68 if (! isstr (opt)) |
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69 error ("__pltopt1__: argument must be a string"); |
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70 endif |
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71 |
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72 while (more_opts) |
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73 |
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74 ## First get next char. |
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75 |
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76 if (max (size (opt)) > 1) |
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77 ## [char, opt] = sscanf (opt, "%c %s", "C"); |
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78 char = opt(1); |
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79 opt = opt(2:length(opt)); |
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80 else |
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81 char = opt; |
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82 more_opts = 0; |
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83 endif |
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84 |
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85 ## Now set flags based on char. |
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86 |
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87 if (strcmp (char, "-")) |
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88 if (set_lines) |
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89 set_linestyle = "dash"; |
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90 else |
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91 set_lines = 1; |
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92 endif |
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93 elseif (strcmp (char, ".")) |
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94 if (set_lines) |
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95 set_linestyle = "dashdot"; |
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96 else |
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97 set_dots = 1; |
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98 endif |
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99 elseif (strcmp (char, ":")) |
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100 set_lines = 1; |
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101 set_linestyle = "dot"; |
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102 elseif (strcmp (char, "@")) |
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103 set_points = 1; |
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104 elseif (strcmp (char, "^")) |
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105 set_impulses = 1; |
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106 elseif (strcmp (char, "L")) |
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107 set_steps = 1; |
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108 elseif (strcmp (char, "~")) |
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109 set_yerrbars = 1; |
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110 elseif (strcmp (char, ">")) |
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111 set_xerrbars = 1; |
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112 elseif (strcmp (char, "#")) |
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113 set_boxes = 1; |
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114 elseif (strcmp (char, "0") || strcmp (char, "1") ... |
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115 || strcmp (char, "2") || strcmp (char, "3") ... |
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116 || strcmp (char, "4") || strcmp (char, "5") ... |
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117 || strcmp (char, "6") || strcmp (char, "7") ... |
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118 || strcmp (char, "8") || strcmp (char, "9")) |
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119 if (set_color) |
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120 set_points = 1; |
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121 symbol = char; |
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122 set_symbol = 1; |
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123 else |
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124 color = char; |
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125 set_color = 1; |
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126 endif |
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127 elseif (strcmp (char, "r")) |
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128 set_color = 1; |
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129 color = "1"; |
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130 elseif (strcmp (char, "g")) |
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131 set_color = 1; |
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132 color = "2"; |
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133 elseif (strcmp (char, "b")) |
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134 set_color = 1; |
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135 color = "3"; |
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136 elseif (strcmp (char, "m")) |
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137 set_color = 1; |
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138 color = "4"; |
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139 elseif (strcmp (char, "c")) |
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140 set_color = 1; |
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141 color = "5"; |
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142 elseif (strcmp (char, "w") || strcmp (char, "k")) |
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143 set_color = 1; |
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144 color = "6"; |
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145 elseif (strcmp (char, "*")) |
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146 set_points = 1; |
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147 set_symbol = 1; |
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148 symbol = "6"; |
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149 elseif (strcmp (char, "+")) |
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150 set_points = 1; |
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151 set_symbol = 1; |
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152 symbol = "2"; |
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153 elseif (strcmp (char, "o")) |
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154 set_points = 1; |
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155 set_symbol = 1; |
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156 symbol = "1"; |
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157 elseif (strcmp (char, "x")) |
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158 set_points = 1; |
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159 set_symbol = 1; |
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160 symbol = "4"; |
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161 elseif (strcmp (char, ";")) # title mode. |
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162 working = 1; |
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163 while (working) |
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164 if (max (size (opt)) > 1) |
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165 char = opt(1); |
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166 opt = opt(2:length(opt)); |
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167 else |
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168 char = opt; |
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169 if (! strcmp (char, ";")) |
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170 error ("%s: unfinished key label", caller); |
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171 endif |
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172 more_opts = 0; |
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173 working = 0; |
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174 endif |
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175 if strcmp (char, ";") |
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176 working = 0; |
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177 else |
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178 if (isempty (key_title)) # needs this to avoid empty matrix warning. |
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179 key_title = char; |
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180 else |
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181 key_title = strcat (key_title, char); |
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182 endif |
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183 endif |
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184 endwhile |
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185 key_title = undo_string_escapes (key_title); |
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186 elseif (strcmp (char, " ")) |
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187 elseif (isempty(char)) |
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188 ## whitespace -- do nothing. |
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189 else |
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190 error ("%s: unrecognized format character: '%s'", caller, char); |
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191 endif |
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192 endwhile |
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193 |
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194 ## Now create format string. |
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195 |
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196 fmt = WITH; |
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197 |
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198 if (set_lines) |
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199 if (set_points) |
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200 fmt = strcat (fmt, " ", LINESPOINTS); |
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201 else |
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202 fmt = strcat (fmt, " ", LINES); |
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203 endif |
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204 elseif (set_boxes) |
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205 if (set_yerrbars && set_xerrbars) |
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206 fmt = strcat (fmt, " ", BOXXY); |
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207 elseif (set_yerrbars ) |
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208 fmt = strcat (fmt, " ", BOXERRORBARS); |
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209 else |
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210 fmt = strcat (fmt, " ", BOXES); |
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211 endif |
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212 elseif (set_points) |
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213 fmt = strcat (fmt, " ", POINTS); |
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214 elseif (set_dots) |
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215 fmt = strcat (fmt, " ", DOTS); |
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216 elseif (set_impulses) |
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217 fmt = strcat (fmt, " ", IMPULSES); |
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218 elseif (set_steps) |
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219 fmt = strcat (fmt, " ", STEPS); |
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220 elseif (set_yerrbars) |
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221 if(set_xerrbars) |
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222 fmt = strcat (fmt, " ", XYERRORBARS); |
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223 else |
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224 fmt = strcat (fmt, " ", YERRORBARS); |
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225 endif |
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226 elseif (set_xerrbars) |
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227 fmt = strcat (fmt, " ", XERRORBARS); |
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228 endif |
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229 |
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230 if (strcmp (fmt, WITH)) |
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231 if (strcmp (caller, "__errplot__")) |
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232 fmt = strcat (fmt, " ", YERRORBARS); |
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233 else |
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234 fmt = strcat (fmt, " ", LINES); |
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235 endif |
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236 endif |
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237 |
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238 if (set_color) |
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239 fmt = strcat (fmt, " ", color); |
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240 if (set_symbol) |
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241 fmt = strcat (fmt, " ", symbol); |
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242 endif |
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243 elseif (set_symbol) |
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244 fmt = strcat (fmt, " 1 ", symbol); |
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245 endif |
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246 |
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247 fmt = sprintf ("%s %s \"%s\" ", fmt, TITLE, key_title); |
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248 |
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249 endfunction |
