annotate scripts/sparse/gplot.m @ 20164:df437a52bcaf stable

doc: Update more docstrings to have one sentence summary as first line. Reviewed miscellaneous, sparse, strings in scripts directory. * scripts/miscellaneous/bzip2.m, scripts/miscellaneous/citation.m, scripts/miscellaneous/compare_versions.m, scripts/miscellaneous/computer.m, scripts/miscellaneous/debug.m, scripts/miscellaneous/dir.m, scripts/miscellaneous/edit.m, scripts/miscellaneous/error_ids.m, scripts/miscellaneous/fileattrib.m, scripts/miscellaneous/fullfile.m, scripts/miscellaneous/genvarname.m, scripts/miscellaneous/gzip.m, scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/news.m, scripts/miscellaneous/open.m, scripts/miscellaneous/parseparams.m, scripts/miscellaneous/recycle.m, scripts/miscellaneous/run.m, scripts/miscellaneous/swapbytes.m, scripts/miscellaneous/tar.m, scripts/miscellaneous/tmpnam.m, scripts/miscellaneous/unpack.m, scripts/miscellaneous/what.m, scripts/sparse/bicg.m, scripts/sparse/bicgstab.m, scripts/sparse/cgs.m, scripts/sparse/colperm.m, scripts/sparse/eigs.m, scripts/sparse/etreeplot.m, scripts/sparse/gmres.m, scripts/sparse/gplot.m, scripts/sparse/ichol.m, scripts/sparse/ilu.m, scripts/sparse/pcg.m, scripts/sparse/pcr.m, scripts/sparse/qmr.m, scripts/sparse/spaugment.m, scripts/sparse/spconvert.m, scripts/sparse/spdiags.m, scripts/sparse/spfun.m, scripts/sparse/spones.m, scripts/sparse/sprandsym.m, scripts/sparse/spstats.m, scripts/sparse/spy.m, scripts/sparse/svds.m, scripts/sparse/treelayout.m, scripts/sparse/treeplot.m, scripts/strings/base2dec.m, scripts/strings/bin2dec.m, scripts/strings/blanks.m, scripts/strings/cstrcat.m, scripts/strings/deblank.m, scripts/strings/dec2base.m, scripts/strings/dec2bin.m, scripts/strings/dec2hex.m, scripts/strings/findstr.m, scripts/strings/hex2dec.m, scripts/strings/index.m, scripts/strings/isletter.m, scripts/strings/isstrprop.m, scripts/strings/mat2str.m, scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m, scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strchr.m, scripts/strings/strjoin.m, scripts/strings/strjust.m, scripts/strings/strmatch.m, scripts/strings/strsplit.m, scripts/strings/strtok.m, scripts/strings/strtrim.m, scripts/strings/strtrunc.m, scripts/strings/substr.m, scripts/strings/untabify.m, scripts/time/datenum.m: Update more docstrings to have one sentence summary as first line.
author Rik <rik@octave.org>
date Mon, 04 May 2015 14:22:02 -0700
parents 9fc020886ae9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 2005-2015 Ivana Varekova
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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 3 of the License, or (at
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8 ## your option) 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, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} gplot (@var{A}, @var{xy})
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21 ## @deftypefnx {Function File} {} gplot (@var{A}, @var{xy}, @var{line_style})
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22 ## @deftypefnx {Function File} {[@var{x}, @var{y}] =} gplot (@var{A}, @var{xy})
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23 ## Plot a graph defined by @var{A} and @var{xy} in the graph theory sense.
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24 ##
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25 ## @var{A} is the adjacency matrix of the array to be plotted and @var{xy} is
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26 ## an @var{n}-by-2 matrix containing the coordinates of the nodes of the graph.
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27 ##
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28 ## The optional parameter @var{line_style} defines the output style for the
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29 ## plot. Called with no output arguments the graph is plotted directly.
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30 ## Otherwise, return the coordinates of the plot in @var{x} and @var{y}.
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31 ## @seealso{treeplot, etreeplot, spy}
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32 ## @end deftypefn
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33
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34 function [x, y] = gplot (A, xy, line_style)
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35
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36 if (nargin < 2 || nargin > 3 || nargout > 2)
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37 print_usage ();
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38 endif
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39
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40 if (nargin == 2)
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41 line_style = "-";
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42 endif
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43
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44 [i, j] = find (A);
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45 xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:);
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46 ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:);
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47
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48 if (nargout == 0)
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49 plot (xcoord, ycoord, line_style);
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50 else
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51 x = xcoord;
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52 y = ycoord;
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53 endif
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54
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55 endfunction
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56
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57
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58 %!demo
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59 %! ## Binary Tree Representation
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60 %! A = [0 1 0 0 0 0 0
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61 %! 1 0 1 1 0 0 0
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62 %! 0 1 0 0 0 0 0
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63 %! 0 1 0 0 1 0 0
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64 %! 0 0 0 1 0 1 1
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65 %! 0 0 0 0 1 0 0
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66 %! 0 0 0 0 1 0 0];
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67 %!
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68 %! xy = [1 , 0
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69 %! 1.5, 1
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70 %! 2 , 0
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71 %! 2.5, 2
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72 %! 3.5, 1
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73 %! 3 , 0
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74 %! 4 , 0];
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75 %!
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76 %! clf;
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77 %! gplot (A, xy, "o-");
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78 %! set (get (gca, ("children")), "markersize", 12);
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79 %! title ("gplot() of Binary Tree Adjacency matrix");
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80
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81 ## Mark graphical function as tested by demo block
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82 %!assert (1)
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83