Mercurial > hg > octave-lyh
annotate scripts/plot/quiver3.m @ 17182:c3c1ebfaa7dc
maint: Use common indentation for switch statement.
* scripts/general/interp1.m, scripts/geometry/delaunay.m,
scripts/help/__unimplemented__.m, scripts/image/cmunique.m,
scripts/miscellaneous/edit.m, scripts/optimization/fzero.m,
scripts/optimization/sqp.m, scripts/plot/__gnuplot_drawnow__.m,
scripts/plot/hidden.m, scripts/plot/legend.m, scripts/plot/print.m,
scripts/plot/printd.m, scripts/plot/private/__contour__.m,
scripts/plot/private/__fltk_print__.m,
scripts/plot/private/__gnuplot_print__.m,
scripts/plot/private/__go_draw_axes__.m,
scripts/plot/private/__print_parse_opts__.m, scripts/signal/periodogram.m,
scripts/sparse/bicg.m, test/slice.tst, test/switch.tst:
Use common indentation for switch statement.
| author | Rik <rik@octave.org> |
|---|---|
| date | Sun, 04 Aug 2013 15:11:34 -0700 |
| parents | 52931d71400f |
| children | 87ba70043bfc |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2007-2012 David Bateman |
| 7189 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {} quiver3 (@var{u}, @var{v}, @var{w}) |
| 7189 | 21 ## @deftypefnx {Function File} {} quiver3 (@var{x}, @var{y}, @var{z}, @var{u}, @var{v}, @var{w}) |
| 22 ## @deftypefnx {Function File} {} quiver3 (@dots{}, @var{s}) | |
| 23 ## @deftypefnx {Function File} {} quiver3 (@dots{}, @var{style}) | |
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24 ## @deftypefnx {Function File} {} quiver3 (@dots{}, "filled") |
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25 ## @deftypefnx {Function File} {} quiver3 (@var{hax}, @dots{}) |
| 7189 | 26 ## @deftypefnx {Function File} {@var{h} =} quiver3 (@dots{}) |
| 27 ## | |
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28 ## Plot the (@var{u}, @var{v}, @var{w}) components of a vector field in |
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29 ## an (@var{x}, @var{y}, @var{z}) meshgrid. If the grid is uniform, you |
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30 ## can specify @var{x}, @var{y}, and @var{z} as vectors. |
| 7189 | 31 ## |
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32 ## If @var{x}, @var{y}, and @var{z} are undefined they are assumed to be |
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33 ## @code{(1:@var{m}, 1:@var{n}, 1:@var{p})} where @code{[@var{m}, @var{n}] = |
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34 ## size (@var{u})} and @code{@var{p} = max (size (@var{w}))}. |
| 7189 | 35 ## |
| 36 ## The variable @var{s} is a scalar defining a scaling factor to use for | |
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37 ## the arrows of the field relative to the mesh spacing. A value of 0 |
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38 ## disables all scaling. The default value is 1. |
| 7189 | 39 ## |
| 40 ## The style to use for the plot can be defined with a line style @var{style} | |
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41 ## of the same format as the @code{plot} command. |
| 7189 | 42 ## If a marker is specified then markers at the grid points of the vectors are |
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43 ## drawn rather than arrows. If the argument "filled" is given then the |
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44 ## markers are filled. |
| 7189 | 45 ## |
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46 ## If the first argument @var{hax} is an axes handle, then plot into this axis, |
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47 ## rather than the current axes returned by @code{gca}. |
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48 ## |
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49 ## The optional return value @var{h} is a graphics handle to a quiver object. |
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50 ## A quiver object regroups the components of the quiver plot (body, arrow, |
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51 ## and marker), and allows them to be changed together. |
| 7189 | 52 ## |
| 53 ## @example | |
| 54 ## @group | |
| 55 ## [x, y, z] = peaks (25); | |
| 56 ## surf (x, y, z); | |
| 57 ## hold on; | |
| 58 ## [u, v, w] = surfnorm (x, y, z / 10); | |
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59 ## h = quiver3 (x, y, z, u, v, w); |
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60 ## set (h, "maxheadsize", 0.33); |
| 7189 | 61 ## @end group |
| 62 ## @end example | |
| 63 ## | |
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64 ## @seealso{quiver, compass, feather, plot} |
| 7189 | 65 ## @end deftypefn |
| 66 | |
| 67 function retval = quiver3 (varargin) | |
| 68 | |
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69 [hax, varargin, nargin] = __plt_get_axis_arg__ ("quiver3", varargin{:}); |
| 7215 | 70 |
| 7189 | 71 if (nargin < 2) |
| 72 print_usage (); | |
| 7215 | 73 else |
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74 oldfig = ifelse (isempty (hax), [], get (0, "currentfigure")); |
| 7189 | 75 unwind_protect |
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76 hax = newplot (hax); |
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77 htmp = __quiver__ (hax, true, varargin{:}); |
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78 |
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79 if (! ishold (hax)) |
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80 set (hax, "view", [-37.5, 30]); # 3D view |
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81 endif |
| 7189 | 82 unwind_protect_cleanup |
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83 if (! isempty (oldfig)) |
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84 set (0, "currentfigure", oldfig); |
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85 endif |
| 7189 | 86 end_unwind_protect |
| 87 endif | |
| 88 | |
| 89 if (nargout > 0) | |
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90 retval = htmp; |
| 7189 | 91 endif |
| 92 | |
| 93 endfunction | |
| 94 | |
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95 |
| 7189 | 96 %!demo |
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97 %! clf; |
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98 %! colormap ('default'); |
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99 %! [x,y] = meshgrid (-1:0.1:1); |
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100 %! z = sin (2*pi * sqrt (x.^2 + y.^2)); |
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101 %! theta = 2*pi * sqrt (x.^2 + y.^2) + pi/2; |
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102 %! mesh (x, y, z); |
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103 %! hold on; |
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104 %! quiver3 (x, y, z, sin (theta), cos (theta), ones (size (z))); |
| 7189 | 105 %! hold off; |
| 7245 | 106 |
| 107 %!demo | |
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108 %! clf; |
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109 %! colormap ('default'); |
| 7245 | 110 %! [x, y, z] = peaks (25); |
| 111 %! surf (x, y, z); | |
| 112 %! hold on; | |
| 113 %! [u, v, w] = surfnorm (x, y, z / 10); | |
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114 %! h = quiver3 (x, y, z, u, v, w); |
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115 %! set (h, 'maxheadsize', 0.33); |
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116 %! hold off; |
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117 |
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118 %!demo |
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119 %! clf; |
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120 %! colormap ('default'); |
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121 %! [x, y, z] = peaks (25); |
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122 %! surf (x, y, z); |
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123 %! hold on; |
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124 %! [u, v, w] = surfnorm (x, y, z / 10); |
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125 %! h = quiver3 (x, y, z, u, v, w); |
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126 %! set (h, 'maxheadsize', 0.33); |
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127 %! hold off; |
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128 %! shading interp; |
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129 |