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annotate scripts/plot/ribbon.m @ 17198:df4c4b7708a4

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Add titles and clean-up plotting %!demos. * scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/bar.m, scripts/plot/barh.m, scripts/plot/clabel.m, scripts/plot/colorbar.m, scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/contour.m, scripts/plot/contour3.m, scripts/plot/contourf.m, scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m, scripts/plot/ezplot.m, scripts/plot/ezplot3.m, scripts/plot/ezpolar.m, scripts/plot/feather.m, scripts/plot/fplot.m, scripts/plot/hold.m, scripts/plot/isosurface.m, scripts/plot/legend.m, scripts/plot/loglog.m, scripts/plot/loglogerr.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/patch.m, scripts/plot/pcolor.m, scripts/plot/pie.m, scripts/plot/pie3.m, scripts/plot/plot.m, scripts/plot/plot3.m, scripts/plot/polar.m, scripts/plot/rectangle.m, scripts/plot/ribbon.m, scripts/plot/rose.m, scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/semilogx.m, scripts/plot/semilogxerr.m, scripts/plot/semilogy.m, scripts/plot/semilogyerr.m, scripts/plot/sombrero.m, scripts/plot/stem3.m, scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/title.m, scripts/plot/waterfall.m: Add titles and clean-up plotting %!demos.
author Rik <rik@octave.org>
date Tue, 06 Aug 2013 14:34:20 -0700
parents eaab03308c0b
children 87ba70043bfc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2007-2012 Kai Habel
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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} {} ribbon (@var{y})
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21 ## @deftypefnx {Function File} {} ribbon (@var{x}, @var{y})
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22 ## @deftypefnx {Function File} {} ribbon (@var{x}, @var{y}, @var{width})
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23 ## @deftypefnx {Function File} {} ribbon (@var{hax}, @dots{})
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24 ## @deftypefnx {Function File} {@var{h} =} ribbon (@dots{})
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25 ## Plot a ribbon plot for the columns of @var{y} vs. @var{x}.
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26 ##
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27 ## The optional parameter @var{width} specifies the width of a single ribbon
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28 ## (default is 0.75). If @var{x} is omitted, a vector containing the
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29 ## row numbers is assumed (@code{1:rows (Y)}).
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30 ##
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31 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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32 ## rather than the current axes returned by @code{gca}.
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33 ##
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34 ## The optional return value @var{h} is a vector of graphics handles to
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35 ## the surface objects representing each ribbon.
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36 ## @seealso{surface, waterfall}
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37 ## @end deftypefn
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38
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39 ## Author: Kai Habel <kai.habel at gmx.de>
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40
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41 function h = ribbon (varargin)
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42
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43 [hax, varargin, nargin] = __plt_get_axis_arg__ ("ribbon", varargin{:});
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44
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45 if (nargin < 1 || nargin > 3)
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46 print_usage ();
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47 endif
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48
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49 if (nargin == 1)
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50 y = varargin{1};
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51 if (isvector (y))
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52 y = y(:);
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53 endif
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54 [nr, nc] = size (y);
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55 x = repmat ((1:nr)', 1, nc);
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56 width = 0.75;
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57 elseif (nargin == 2)
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58 x = varargin{1};
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59 y = varargin{2};
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60 width = 0.75;
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61 else
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62 x = varargin{1};
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63 y = varargin{2};
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64 width = varargin{3};
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65 endif
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66
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67 if (isvector (x) && isvector (y))
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68 if (length (x) != length (y))
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69 error ("ribbon: vectors X and Y must have the same length");
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70 else
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71 [x, y] = meshgrid (x, y);
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72 endif
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73 else
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74 if (! size_equal (x, y))
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75 error ("ribbon: matrices X and Y must have the same size");
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76 endif
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77 endif
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78
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79 oldfig = ifelse (isempty (hax), [], get (0, "currentfigure"));
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80 unwind_protect
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81 hax = newplot (hax);
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82
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83 [nr, nc] = size (y);
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84 htmp = zeros (nc, 1);
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85
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86 for c = nc:-1:1
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87 zz = [y(:,c), y(:,c)];
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88 yy = x(:,c);
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89 xx = [c - width / 2, c + width / 2];
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90 [xx, yy] = meshgrid (xx, yy);
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91 cc = repmat (c, size (zz));
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92 htmp(c) = surface (xx, yy, zz, cc);
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93 endfor
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94
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95 if (! ishold ())
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96 set (hax, "view", [-37.5, 30], "box", "off",
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97 "xgrid", "on", "ygrid", "on", "zgrid", "on");
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98 endif
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99
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100 unwind_protect_cleanup
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101 if (! isempty (oldfig))
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102 set (0, "currentfigure", oldfig);
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103 endif
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104 end_unwind_protect
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105
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106 if (nargout > 0)
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107 h = htmp;
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108 endif
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109
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110 endfunction
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111
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112
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113 %!demo
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114 %! clf;
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115 %! colormap ('default');
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116 %! [x, y, z] = sombrero ();
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117 %! [~, y] = meshgrid (x, y);
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118 %! ribbon (y, z);
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119 %! title ('ribbon() plot of sombrero()');
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120
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121 %!FIXME: Could have some input validation tests here
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122