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