Mercurial > octave
annotate scripts/plot/util/findobj.m @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | 6652d3823428 |
children | d4ee26280bb9 |
rev | line source |
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1 ## Copyright (C) 2007-2019 Ben Abbott |
6935 | 2 ## |
7016 | 3 ## This file is part of Octave. |
6935 | 4 ## |
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5 ## Octave is free software: you can redistribute it and/or modify it |
7016 | 6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation, either version 3 of the License, or |
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8 ## (at your option) any later version. |
7016 | 9 ## |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 ## GNU General Public License for more details. |
6935 | 14 ## |
15 ## You should have received a copy of the GNU General Public License | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
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17 ## <https://www.gnu.org/licenses/>. |
6935 | 18 |
19 ## -*- texinfo -*- | |
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20 ## @deftypefn {} {@var{h} =} findobj () |
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21 ## @deftypefnx {} {@var{h} =} findobj (@var{prop_name}, @var{prop_value}, @dots{}) |
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22 ## @deftypefnx {} {@var{h} =} findobj (@var{prop_name}, @var{prop_value}, "-@var{logical_op}", @var{prop_name}, @var{prop_value}) |
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23 ## @deftypefnx {} {@var{h} =} findobj ("-property", @var{prop_name}) |
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24 ## @deftypefnx {} {@var{h} =} findobj ("-regexp", @var{prop_name}, @var{pattern}) |
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25 ## @deftypefnx {} {@var{h} =} findobj (@var{hlist}, @dots{}) |
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26 ## @deftypefnx {} {@var{h} =} findobj (@var{hlist}, "flat", @dots{}) |
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27 ## @deftypefnx {} {@var{h} =} findobj (@var{hlist}, "-depth", @var{d}, @dots{}) |
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28 ## Find graphics objects with specified properties. |
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29 ## |
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30 ## When called without arguments, return all graphic objects beginning with the |
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31 ## root object (0) and including all of its descendants. |
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32 ## |
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33 ## The simplest form for narrowing the results is |
6935 | 34 ## |
35 ## @example | |
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36 ## findobj (@var{prop_name}, @var{prop_value}) |
6935 | 37 ## @end example |
38 ## | |
39 ## @noindent | |
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40 ## which returns the handles of all objects which have a property named |
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41 ## @var{prop_name} that has the value @var{prop_value}. If multiple |
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42 ## property/value pairs are specified then only objects meeting all of the |
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43 ## conditions (equivalent to @code{-and}) are returned. |
6935 | 44 ## |
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45 ## The search can be limited to a particular set of objects and their |
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46 ## descendants, by passing a handle or set of handles @var{hlist} as the first |
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47 ## argument. |
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48 ## |
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49 ## The depth of the object hierarchy to search can be limited with the |
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50 ## @qcode{"-depth"} argument. An example of searching through only three |
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51 ## generations of children is: |
6935 | 52 ## |
53 ## @example | |
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54 ## findobj (@var{hlist}, "-depth", 3, @var{prop_name}, @var{prop_value}) |
6935 | 55 ## @end example |
56 ## | |
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57 ## Specifying a depth @var{d} of 0 limits the search to the set of objects |
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58 ## passed in @var{hlist}. A depth of 0 is also equivalent to the |
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59 ## @qcode{"flat"} argument. The default depth value is @code{Inf} which |
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60 ## includes all descendants. |
6935 | 61 ## |
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62 ## A specified logical operator may be used between @var{prop_name}, |
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63 ## @var{prop_value} pairs. The supported logical operators are: |
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64 ## @qcode{"-and"}, @qcode{"-or"}, @qcode{"-xor"}, @qcode{"-not"}. Example code |
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65 ## to locate all figure and axes objects is |
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66 ## |
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67 ## @example |
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68 ## findobj ("type", "figure", "-or", "type", "axes") |
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69 ## @end example |
6935 | 70 ## |
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71 ## Objects may also be matched by comparing a regular expression to the |
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72 ## property values, where property values that match |
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73 ## @code{regexp (@var{prop_value}, @var{pattern})} are returned. |
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74 ## |
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75 ## Finally, objects which have a property name can be found with the |
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76 ## @qcode{"-property"} option. For example, code to locate objects with a |
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77 ## @qcode{"meshstyle"} property is |
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78 ## |
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79 ## @example |
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80 ## findobj ("-property", "meshstyle") |
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81 ## @end example |
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82 ## |
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83 ## Implementation Note: The search only includes objects with visible |
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84 ## handles (@w{HandleVisibility} = @qcode{"on"}). @xref{XREFfindall,,findall}, |
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85 ## to search for all objects including hidden ones. |
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86 ## @seealso{findall, allchild, get, set} |
6935 | 87 ## @end deftypefn |
88 | |
7017 | 89 ## Author: Ben Abbott <bpabbott@mac.com> |
90 | |
6935 | 91 function h = findobj (varargin) |
92 | |
93 depth = NaN; | |
94 if (nargin == 0) | |
95 handles = 0; | |
96 n1 = 0; | |
97 else | |
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98 if (! isempty (varargin{1})) |
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99 if (ishghandle (varargin{1}(1))) |
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100 handles = varargin{1}; |
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101 n1 = 2; |
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102 else |
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103 handles = 0; |
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104 n1 = 1; |
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105 endif |
6935 | 106 else |
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107 ## Return [](0x1) for compatibility. |
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108 h = zeros (0, 1); |
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109 return; |
7151 | 110 endif |
6935 | 111 if (n1 <= nargin) |
112 if (ischar (varargin{n1})) | |
10549 | 113 if (strcmpi (varargin{n1}, "flat")) |
114 depth = 0; | |
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115 n1 += 1; |
10549 | 116 endif |
6935 | 117 else |
10549 | 118 error ("findobj: properties and options must be strings"); |
6935 | 119 endif |
120 endif | |
121 endif | |
122 | |
123 if (n1 <= nargin && nargin > 0) | |
124 args = varargin(n1 : nargin); | |
125 else | |
126 args = {}; | |
127 endif | |
128 | |
129 regularexpression = []; | |
130 property = []; | |
131 logicaloperator = {}; | |
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132 extranegation = []; |
6935 | 133 pname = {}; |
134 pvalue = {}; | |
135 np = 1; | |
136 na = 1; | |
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137 operatorprecedence = {"-not", "-and", "-or", "-xor"}; |
6935 | 138 |
139 while (na <= numel (args)) | |
140 regularexpression(np) = 0; | |
141 property(np) = 0; | |
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142 if (numel (extranegation) < np) |
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143 extranegation(np) = false; |
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144 endif |
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145 logicaloperator{np} = "and"; |
7208 | 146 if (ischar (args{na})) |
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147 if (strcmpi (args{na}, "-property")) |
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148 if (na + 1 <= numel (args)) |
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149 na += 1; |
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150 property(np) = 1; |
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151 pname{np} = args{na}; |
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152 na += 1; |
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153 pvalue{np} = []; |
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154 np += 1; |
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155 else |
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156 error ("findobj: inconsistent number of arguments"); |
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157 endif |
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158 elseif (strcmpi (args{na}, "-regexp")) |
10549 | 159 if (na + 2 <= numel (args)) |
160 regularexpression(np) = 1; | |
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161 na += 1; |
10549 | 162 pname{np} = args{na}; |
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163 na += 1; |
10549 | 164 pvalue{np} = args{na}; |
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165 na += 1; |
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166 np += 1; |
10549 | 167 else |
168 error ("findobj: inconsistent number of arguments"); | |
169 endif | |
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170 elseif (strcmpi (args{na}, "-depth")) |
10549 | 171 if (na + 1 <= numel (args)) |
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172 na += 1; |
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173 depth = args{na}; |
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174 na += 1; |
10549 | 175 else |
176 error ("findobj: inconsistent number of arguments"); | |
177 endif | |
8506 | 178 elseif (! strcmp (args{na}(1), "-")) |
10549 | 179 ## Parameter/value pairs. |
180 if (na + 1 <= numel (args)) | |
181 pname{np} = args{na}; | |
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182 na += 1; |
10549 | 183 pvalue{np} = args{na}; |
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184 na += 1; |
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185 if (na <= numel (args)) |
10549 | 186 if (ischar (args{na})) |
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187 if (any (strcmpi (args{na}, operatorprecedence))) |
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188 logicaloperator{np} = args{na}(2:end); |
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189 na += 1; |
10549 | 190 endif |
191 else | |
192 error ("findobj: properties and options must be strings"); | |
193 endif | |
194 else | |
195 logicaloperator{np} = "and"; | |
196 endif | |
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197 np += 1; |
10549 | 198 else |
199 error ("findobj: inconsistent number of arguments"); | |
200 endif | |
6935 | 201 else |
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202 if (strcmpi (args{na}, "-not")) |
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203 extranegation(np) = true; |
10549 | 204 endif |
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205 na += 1; |
6935 | 206 endif |
207 else | |
208 error ("findobj: properties and options must be strings"); | |
209 endif | |
210 endwhile | |
211 | |
212 numpairs = np - 1; | |
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213 if (! isempty (logicaloperator)) |
16673 | 214 logicaloperator = shift (logicaloperator, 1); |
215 endif | |
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216 |
8506 | 217 ## Load all objects which qualify for being searched. |
6935 | 218 idepth = 0; |
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219 h = handles(:); |
6935 | 220 while (numel (handles) && ! (idepth >= depth)) |
221 children = []; | |
222 for n = 1 : numel (handles) | |
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223 children = [children; get(handles(n), "children")]; |
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224 endfor |
6935 | 225 handles = children; |
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226 h = [h; children]; |
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227 idepth += 1; |
6935 | 228 endwhile |
229 | |
230 if (numpairs > 0) | |
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231 match = true (numel (h), numpairs); |
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232 for nh = 1 : numel (h) |
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233 p = get (h(nh)); |
6935 | 234 for np = 1 : numpairs |
10549 | 235 fields = fieldnames (p); |
236 fieldindex = find (strcmpi (fields, pname{np}), 1); | |
237 if (numel (fieldindex)) | |
6935 | 238 pname{np} = fields{fieldindex}; |
239 if (property(np)) | |
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240 match(nh,np) = true; |
6935 | 241 else |
242 if (regularexpression(np)) | |
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243 found = regexp (p.(pname{np}), pvalue{np}, "once"); |
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244 if (isempty (found)) |
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245 match(nh,np) = false; |
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246 else |
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247 match(nh,np) = true; |
7151 | 248 endif |
6935 | 249 elseif (numel (p.(pname{np})) == numel (pvalue{np})) |
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250 if (ischar (pvalue{np}) && ischar (p.(pname{np}))) |
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251 match(nh,np) = strcmpi (pvalue{np}, p.(pname{np})); |
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252 elseif (isnumeric (pvalue{np} && isnumeric (p.(pname{np})))) |
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253 match(nh,np) = (pvalue{np} == p.(pname{np})); |
10549 | 254 else |
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255 match(nh,np) = isequal (pvalue{np}, p.(pname{np})); |
10549 | 256 endif |
6935 | 257 else |
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258 match(nh,np) = false; |
6935 | 259 endif |
260 endif | |
10549 | 261 else |
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262 match(nh,np) = false; |
10549 | 263 endif |
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264 if (extranegation(np)) |
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265 match(nh,np) = ! match(nh,np); |
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266 endif |
6935 | 267 endfor |
268 endfor | |
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269 |
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270 if (numpairs > 1) |
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271 for no = 1 : numel (operatorprecedence) |
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272 pairs = find (strcmp (logicaloperator(2:end), ... |
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273 operatorprecedence{no}(2:end))); |
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274 for np = sort (pairs, "descend") |
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275 if (no == 1) |
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276 match(:,np+1) = ! match(:,np+1); |
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277 logicaloperator(np+1) = {"and"}; |
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278 else |
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279 match(:,np) = feval (logicaloperator{np+1}, match(:,np), ... |
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280 match(:,np+1)); |
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281 logicaloperator(np+1) = []; |
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282 match(:,np+1) = []; |
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283 numpairs -= 1; |
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284 endif |
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285 if (numpairs < 2) |
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286 break; |
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287 endif |
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288 endfor |
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289 if (numpairs < 2) |
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290 break; |
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291 endif |
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292 endfor |
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293 endif |
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294 else |
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295 match = true (numel (h), 1); |
6935 | 296 endif |
297 | |
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298 h = h(match); |
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299 h = h(:); |
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300 |
6935 | 301 endfunction |
13096 | 302 |
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303 |
16673 | 304 %!test |
305 %! hf = figure ("visible", "off"); | |
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306 %! unwind_protect |
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307 %! h = findobj (gca (), "-property", "foo"); |
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308 %! assert (isempty (h)); |
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309 %! unwind_protect_cleanup |
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310 %! close (hf); |
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311 %! end_unwind_protect |
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312 |
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313 %!test |
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314 %! hf = figure ("visible", "off"); |
16673 | 315 %! unwind_protect |
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316 %! h = plot (1:10, "b"); |
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317 %! set (h, "tag", "foobar"); |
16673 | 318 %! g = findobj (gcf (), "tag", "foobar", "type", "line", "color", [0 0 1]); |
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319 %! assert (g, h); |
16673 | 320 %! unwind_protect_cleanup |
321 %! close (hf); | |
322 %! end_unwind_protect | |
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323 |
13096 | 324 %!test |
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325 %! hf = figure ("visible", "off"); |
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326 %! unwind_protect |
13096 | 327 %! l = line; |
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328 %! obj = findobj (hf, "type", "line"); |
13096 | 329 %! assert (l, obj); |
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330 %! assert (gca, findobj (hf, "type", "axes")); |
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331 %! assert (hf, findobj (hf, "type", "figure")); |
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332 %! assert (isempty (findobj (hf, "type", "xyzxyz"))); |
13096 | 333 %! unwind_protect_cleanup |
334 %! close (hf); | |
335 %! end_unwind_protect | |
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336 |
16673 | 337 %!test |
338 %! hf = figure ("visible", "off"); | |
339 %! unwind_protect | |
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340 %! subplot (2,2,1); |
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341 %! imagesc (rand (10)); |
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342 %! subplot (2,2,2); |
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343 %! surf (peaks); |
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344 %! subplot (2,2,3); |
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345 %! contour (peaks); |
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346 %! subplot (2,2,4); |
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347 %! plot (peaks); |
16673 | 348 %! h1 = findobj (gcf (), "-regexp", "Type", "image|surface|hggroup"); |
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349 %! h2 = findobj (gcf (), "Type", "image", |
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350 %! "-or", "Type", "surface", |
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351 %! "-or", "Type", "hggroup"); |
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352 %! assert (h2, h1); |
16673 | 353 %! unwind_protect_cleanup |
354 %! close (hf); | |
355 %! end_unwind_protect | |
356 | |
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357 %!test |
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358 %! hf = figure ("visible", "off"); |
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359 %! unwind_protect |
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360 %! h1 = subplot (2,2,1); |
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361 %! h2 = subplot (2,2,2); |
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362 %! h3 = subplot (2,2,3, "userdata", struct ("foo", "bar")); |
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363 %! h4 = subplot (2,2,4); |
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364 %! h = findobj (hf, "userdata", struct ("foo", "bar")); |
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365 %! assert (h, h3); |
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366 %! unwind_protect_cleanup |
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367 %! close (hf); |
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368 %! end_unwind_protect |
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369 |
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370 %!test |
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371 %! hf = figure ("visible", "off"); |
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372 %! unwind_protect |
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373 %! h1 = subplot (2,2,1, "tag", "1"); |
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374 %! h2 = subplot (2,2,2, "tag", "2"); |
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375 %! h3 = subplot (2,2,3, "tag", "3"); |
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376 %! h4 = subplot (2,2,4, "tag", "4"); |
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377 %! h = findobj (hf, "type", "axes", "-not", "tag", "1"); |
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378 %! assert (h, [h4; h3; h2]); |
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379 %! unwind_protect_cleanup |
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380 %! close (hf); |
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381 %! end_unwind_protect |
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382 |
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383 %!test |
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384 %! hf = figure ("visible", "off"); |
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385 %! unwind_protect |
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386 %! h1 = subplot (2, 2, 1); |
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387 %! set (h1, "userdata", struct ("column", 1, "row", 1)); |
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388 %! h2 = subplot (2, 2, 2); |
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389 %! set (h2, "userdata", struct ("column", 2, "row", 1)); |
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390 %! h3 = subplot (2, 2, 3); |
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391 %! set (h3, "userdata", struct ("column", 1, "row", 2)); |
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392 %! h4 = subplot (2, 2, 4); |
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393 %! set (h4, "userdata", struct ("column", 2, "row", 2)); |
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394 %! h = findobj (hf, "type", "axes", |
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395 %! "-not", "userdata", struct ("column", 1, "row", 1)); |
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396 %! unwind_protect_cleanup |
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397 %! close (hf); |
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398 %! end_unwind_protect |
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399 %! assert (h, [h4; h3; h2]); |
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400 |
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401 %!test |
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402 %! hf = figure ("visible", "off"); |
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403 %! unwind_protect |
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404 %! ha = axes (); |
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405 %! plot (1:10); |
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406 %! h = findobj (hf, "type", "figure", |
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407 %! "-or", "parent", hf, |
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408 %! "-and", "type", "axes"); |
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409 %! unwind_protect_cleanup |
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410 %! close (hf); |
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411 %! end_unwind_protect |
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412 %! assert (h, [hf; ha]); |
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413 |
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414 %!test |
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415 %! hf = figure ("visible", "off"); |
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416 %! unwind_protect |
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417 %! set (hf, "tag", "foo"); |
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418 %! h1 = subplot (2,2,1, "tag", "foo"); |
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419 %! h2 = subplot (2,2,2, "tag", "bar"); |
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420 %! h3 = subplot (2,2,3, "tag", "foo"); |
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421 %! h4 = subplot (2,2,4, "tag", "bar"); |
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422 %! h = findobj (hf, "type", "axes", "-xor", "tag", "foo"); |
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423 %! assert (h, [hf; h4; h2]); |
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424 %! unwind_protect_cleanup |
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425 %! close (hf); |
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426 %! end_unwind_protect |
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427 |
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428 %!test |
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429 %! hf = figure ("visible", "off"); |
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430 %! unwind_protect |
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431 %! hax1 = subplot (2,1,1); |
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432 %! hl1 = plot (rand (10,1)); |
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433 %! hax2 = subplot (2,1,2); |
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434 %! hl2 = plot (rand (10,1)); |
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435 %! hobj = findobj (hf); |
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436 %! assert (hobj, [hf; hax2; hax1; hl2; hl1]); |
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437 %! unwind_protect_cleanup |
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438 %! close (hf); |
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439 %! end_unwind_protect |