X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=octave_packages%2Fm%2Fplot%2Fsurfc.m;fp=octave_packages%2Fm%2Fplot%2Fsurfc.m;h=6812c364fc74c1cf790c053e1e646e0337e82327;hb=1c0469ada9531828709108a4882a751d2816994a;hp=0000000000000000000000000000000000000000;hpb=63de9f36673d49121015e3695f2c336ea92bc278;p=CreaPhase.git diff --git a/octave_packages/m/plot/surfc.m b/octave_packages/m/plot/surfc.m new file mode 100644 index 0000000..6812c36 --- /dev/null +++ b/octave_packages/m/plot/surfc.m @@ -0,0 +1,94 @@ +## Copyright (C) 1996-2012 John W. Eaton +## +## This file is part of Octave. +## +## Octave is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## Octave is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## . + +## -*- texinfo -*- +## @deftypefn {Function File} {} surfc (@var{x}, @var{y}, @var{z}) +## Plot a surface and contour given matrices @var{x}, and @var{y} from +## @code{meshgrid} and a matrix @var{z} corresponding to the @var{x} and +## @var{y} coordinates of the mesh. If @var{x} and @var{y} are vectors, +## then a typical vertex is (@var{x}(j), @var{y}(i), @var{z}(i,j)). Thus, +## columns of @var{z} correspond to different @var{x} values and rows of +## @var{z} correspond to different @var{y} values. +## @seealso{meshgrid, surf, contour} +## @end deftypefn + +function h = surfc (varargin) + + newplot (); + + tmp = surface (varargin{:}); + + ax = get (tmp, "parent"); + + set (tmp, "facecolor", "flat"); + + if (! ishold ()) + set (ax, "view", [-37.5, 30], + "xgrid", "on", "ygrid", "on", "zgrid", "on"); + endif + + drawnow (); + zmin = get (ax, "zlim")(1); + + # don't pass axis handle and/or string arguments to __contour__() + stop_idx = nargin; + for i = 2 : nargin + if (ischar (varargin{i})) + stop_idx = i - 1; + break; + endif + endfor + + start_idx = 1; + if (ishandle (varargin{1})) + start_idx = 2; + endif + + if (stop_idx - start_idx == 1 || stop_idx - start_idx == 3) + #don't pass a color matrix c to __contour__ + stop_idx -= 1; + endif + + [c, tmp2] = __contour__ (ax, zmin, varargin{start_idx:stop_idx}); + + tmp = [tmp; tmp2]; + + if (nargout > 0) + h = tmp; + endif + +endfunction + +%!demo +%! clf +%! [~,~,Z]=peaks; +%! surfc(Z); + +%!demo +%! clf +%! [~,~,Z]=sombrero; +%! [Fx,Fy] = gradient(Z); +%! surfc(Z,Fx+Fy); +%! shading interp; + +%!demo +%! clf +%! [X,Y,Z]=sombrero; +%! [~,Fy] = gradient(Z); +%! surfc(X,Y,Z,Fy); +%! shading interp;