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annotate scripts/plot/draw/line.m @ 20177:15e5eb7a0c1d

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make dist: add updated zoom images to EXTRADIST (bug #44579) * libgui/graphics/module.mk: add graphics/images/zoom-in.png, graphics/images/zoom-out.png, remove graphics/images/zoom.png
author John Donoghue
date Thu, 19 Mar 2015 08:37:47 -0400
parents 4197fc428c7d
children
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4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 2005-2015 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 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} {} line ()
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21 ## @deftypefnx {Function File} {} line (@var{x}, @var{y})
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22 ## @deftypefnx {Function File} {} line (@var{x}, @var{y}, @var{property}, @var{value}, @dots{})
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23 ## @deftypefnx {Function File} {} line (@var{x}, @var{y}, @var{z})
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24 ## @deftypefnx {Function File} {} line (@var{x}, @var{y}, @var{z}, @var{property}, @var{value}, @dots{})
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25 ## @deftypefnx {Function File} {} line (@var{property}, @var{value}, @dots{})
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26 ## @deftypefnx {Function File} {} line (@var{hax}, @dots{})
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27 ## @deftypefnx {Function File} {@var{h} =} line (@dots{})
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28 ## Create line object from @var{x} and @var{y} (and possibly @var{z}) and
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29 ## insert in the current axes.
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30 ##
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31 ## Multiple property-value pairs may be specified for the line object, but they
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32 ## must appear in pairs.
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33 ##
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34 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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35 ## rather than the current axes returned by @code{gca}.
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36 ##
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37 ## The optional return value @var{h} is a graphics handle (or vector of handles)
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38 ## to the line objects created.
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39 ##
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40 ## @seealso{image, patch, rectangle, surface, text}
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41 ## @end deftypefn
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42
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43 ## Author: jwe
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44
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45 function h = line (varargin)
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46
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47 ## Get axis argument which may be in a 'parent' PROP/VAL pair
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48 [hax, varargin] = __plt_get_axis_arg__ ("line", varargin{:});
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49
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50 if (isempty (hax))
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51 hax = gca ();
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52 else
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53 hax = hax(1);
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54 endif
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55
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56 htmp = __line__ (hax, varargin{:});
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57
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58 if (nargout > 0)
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59 h = htmp;
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60 endif
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61
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62 endfunction
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63
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64
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65 %!demo
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66 %! clf
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67 %! line ([0 1], [0.8 0.8], 'linestyle', '-', 'color', 'b');
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68 %! line ([0 1], [0.6 0.6], 'linestyle', '--', 'color', 'g');
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69 %! line ([0 1], [0.4 0.4], 'linestyle', ':', 'color', 'r');
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70 %! line ([0 1], [0.2 0.2], 'linestyle', '-.', 'color', 'k');
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71 %! ylim ([0 1]);
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72 %! title ('line() with various linestyles');
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73 %! legend ('"-"', '"--"', '":"', '"-."', 'location', 'eastoutside');
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74
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75 %!demo
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76 %! clf
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77 %! x = 0:0.3:10;
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78 %! y1 = cos (x);
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79 %! y2 = sin (x);
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80 %! subplot (3,1,1);
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81 %! args = {'color', 'b', 'marker', 's'};
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82 %! line ([x(:), x(:)], [y1(:), y2(:)], args{:});
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83 %! title ('Test broadcasting for line()');
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84 %! subplot (3,1,2);
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85 %! line (x(:), [y1(:), y2(:)], args{:});
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86 %! subplot (3,1,3);
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87 %! line ([x(:), x(:)+pi/2], y1(:), args{:});
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88 %! xlim ([0 10]);
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89
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90 %!test
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91 %! hf = figure ("visible", "off");
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92 %! unwind_protect
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93 %! h = line;
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94 %! assert (findobj (hf, "type", "line"), h);
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95 %! assert (get (h, "xdata"), [0 1], eps);
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96 %! assert (get (h, "ydata"), [0 1], eps);
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97 %! assert (get (h, "type"), "line");
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98 %! assert (get (h, "color"), get (0, "defaultlinecolor"));
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99 %! assert (get (h, "linestyle"), get (0, "defaultlinelinestyle"));
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100 %! assert (get (h, "linewidth"), get (0, "defaultlinelinewidth"), eps);
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101 %! unwind_protect_cleanup
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102 %! close (hf);
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103 %! end_unwind_protect
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104