Mercurial > octave

annotate scripts/plot/quiver.m @ 14359:7277fe922e99

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc: Use Octave preference for double quote in docstrings in scripts/ * interp1.m, interp2.m, interp3.m, interpn.m, profexplore.m, profile.m, profshow.m, quadgk.m, lookfor.m, imagesc.m, bzip2.m, gzip.m, parseparams.m, pkg.m, ancestor.m, caxis.m, ezmesh.m, ezmeshc.m, ezsurf.m, ezsurfc.m, hidden.m, hold.m, patch.m, pie.m, pie3.m, quiver.m, quiver3.m, scatter3.m, uicontextmenu.m, uicontrol.m, uipanel.m, uipushtool.m, uitoggletool.m, uitoolbar.m, xlim.m, ylim.m, zlim.m, ismember.m, setxor.m, filter2.m, bicg.m, demo.m, example.m, fail.m, test.m: Use Octave preference for double quote in docstrings in scripts/ directory.
author Rik <octave@nomad.inbox5.com>
date Mon, 13 Feb 2012 07:38:23 -0800
parents 4506eade9f04
children 5d3a684236b0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 14092
diff changeset
1 ## Copyright (C) 2007-2012 David Bateman
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
2 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
3 ## This file is part of Octave.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
4 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
6 ## under the terms of the GNU General Public License as published by
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
8 ## your option) any later version.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
9 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
13 ## General Public License for more details.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
14 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
15 ## You should have received a copy of the GNU General Public License
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
17 ## <http://www.gnu.org/licenses/>.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
18
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
19 ## -*- texinfo -*-
10793
be55736a0783 Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents: 9354
diff changeset
20 ## @deftypefn {Function File} {} quiver (@var{u}, @var{v})
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
21 ## @deftypefnx {Function File} {} quiver (@var{x}, @var{y}, @var{u}, @var{v})
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
22 ## @deftypefnx {Function File} {} quiver (@dots{}, @var{s})
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
23 ## @deftypefnx {Function File} {} quiver (@dots{}, @var{style})
14359
7277fe922e99 doc: Use Octave preference for double quote in docstrings in scripts/
Rik <octave@nomad.inbox5.com>
parents: 14245
diff changeset
24 ## @deftypefnx {Function File} {} quiver (@dots{}, "filled")
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
25 ## @deftypefnx {Function File} {} quiver (@var{h}, @dots{})
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
26 ## @deftypefnx {Function File} {@var{h} =} quiver (@dots{})
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
27 ##
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
28 ## Plot the @code{(@var{u}, @var{v})} components of a vector field in
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
29 ## an @code{(@var{x}, @var{y})} meshgrid. If the grid is uniform, you can
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
30 ## specify @var{x} and @var{y} as vectors.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
31 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
32 ## If @var{x} and @var{y} are undefined they are assumed to be
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
33 ## @code{(1:@var{m}, 1:@var{n})} where @code{[@var{m}, @var{n}] =
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
34 ## size(@var{u})}.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
35 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
36 ## The variable @var{s} is a scalar defining a scaling factor to use for
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
37 ## the arrows of the field relative to the mesh spacing. A value of 0
9040
dbd0c77e575e Cleanup documentation file plot.texi
Rik <rdrider0-list@yahoo.com>
parents: 8920
diff changeset
38 ## disables all scaling. The default value is 1.
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
39 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
40 ## The style to use for the plot can be defined with a line style @var{style}
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
41 ## in a similar manner to the line styles used with the @code{plot} command.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
42 ## If a marker is specified then markers at the grid points of the vectors are
14359
7277fe922e99 doc: Use Octave preference for double quote in docstrings in scripts/
Rik <octave@nomad.inbox5.com>
parents: 14245
diff changeset
43 ## printed rather than arrows. If the argument "filled" is given then the
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
44 ## markers as filled.
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
45 ##
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
46 ## The optional return value @var{h} is a graphics handle to a quiver object.
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
47 ## A quiver object regroups the components of the quiver plot (body, arrow,
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
48 ## and marker), and allows them to be changed together.
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
49 ##
7121
c0d9ac299176 [project @ 2007-11-07 21:32:57 by jwe]
jwe
parents: 7120
diff changeset
50 ## @example
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
51 ## @group
7121
c0d9ac299176 [project @ 2007-11-07 21:32:57 by jwe]
jwe
parents: 7120
diff changeset
52 ## [x, y] = meshgrid (1:2:20);
8056
9a6f4713f765 Add area, bar, quiver and stair series graphics objects. Document them
David Bateman <dbateman@free.fr>
parents: 7215
diff changeset
53 ## h = quiver (x, y, sin (2*pi*x/10), sin (2*pi*y/10));
9a6f4713f765 Add area, bar, quiver and stair series graphics objects. Document them
David Bateman <dbateman@free.fr>
parents: 7215
diff changeset
54 ## set (h, "maxheadsize", 0.33);
7121
c0d9ac299176 [project @ 2007-11-07 21:32:57 by jwe]
jwe
parents: 7120
diff changeset
55 ## @end group
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
56 ## @end example
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
57 ##
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
58 ## @seealso{plot}
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
59 ## @end deftypefn
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
60
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
61 function retval = quiver (varargin)
7121
c0d9ac299176 [project @ 2007-11-07 21:32:57 by jwe]
jwe
parents: 7120
diff changeset
62
7215
dd88d61d443f [project @ 2007-11-29 16:44:45 by jwe]
jwe
parents: 7208
diff changeset
63 [h, varargin, nargin] = __plt_get_axis_arg__ ("quiver", varargin{:});
dd88d61d443f [project @ 2007-11-29 16:44:45 by jwe]
jwe
parents: 7208
diff changeset
64
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
65 if (nargin < 2)
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
66 print_usage ();
7215
dd88d61d443f [project @ 2007-11-29 16:44:45 by jwe]
jwe
parents: 7208
diff changeset
67 else
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
68 oldh = gca ();
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
69 unwind_protect
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
70 axes (h);
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
71 newplot ();
7215
dd88d61d443f [project @ 2007-11-29 16:44:45 by jwe]
jwe
parents: 7208
diff changeset
72 tmp = __quiver__ (h, 0, varargin{:});
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
73 unwind_protect_cleanup
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
74 axes (oldh);
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
75 end_unwind_protect
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
76 endif
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
77
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
78 if (nargout > 0)
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
79 retval = tmp;
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
80 endif
7121
c0d9ac299176 [project @ 2007-11-07 21:32:57 by jwe]
jwe
parents: 7120
diff changeset
81
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
82 endfunction
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
83
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
84
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
85 %!demo
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
86 %! clf;
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
87 %! [x,y] = meshgrid (1:2:20);
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
88 %! h = quiver (x,y, sin (2*pi*x/10), sin (2*pi*y/10));
14245
4506eade9f04 Use Matlab coding conventions for demos in plot/ directory.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
89 %! set (h, 'maxheadsize', 0.33);
7120
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
90
a2174fb073d4 [project @ 2007-11-07 21:26:43 by jwe]
jwe
parents:
diff changeset
91 %!demo
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
92 %! clf;
14245
4506eade9f04 Use Matlab coding conventions for demos in plot/ directory.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
93 %! axis ('equal');
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
94 %! x = linspace (0, 3, 80);
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
95 %! y = sin (2*pi*x);
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
96 %! theta = 2*pi*x + pi/2;
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
97 %! quiver (x, y, sin (theta)/10, cos (theta)/10);
14245
4506eade9f04 Use Matlab coding conventions for demos in plot/ directory.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
98 %! hold on; plot (x,y,'r'); hold off;
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
99