Update of /cvsroot/octaviz/octaviz/Scripts
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv15618
Added Files:
vtk_pcolor.m
Log Message:
Added vtk_pcolor
--- NEW FILE: vtk_pcolor.m ---
## Copyright (C) 2004 Dragan Tubic
##
## This program 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 2, or (at your option)
## any later version.
##
## This program 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 this file. If not, write to the Free Software Foundation,
## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
## -*- texinfo -*-
## @deftypefn {Function File} {} vtk_pcolor(@var{x},@var{y},@var{c},[@var{prop},@var{val}])
## Displays a surface plot defined by @var{x},@var{y} matrices,
## where @var{x} and @var{y} are typically formed by meshgrid.
## @var{c} is a matrix to give a color scale.
##
## Optional @var{prop},@var{val} arguments can be used to change
## properties of the plot. Currently, valid properties are
## ";Interp;".
##
## @end deftypefn
## @seealso{vtk_surf, vtk_mesh}
## Author: Dragan Tubic
function vtk_pcolor( varargin )
valid_props = ";;";
[no_numerical_params, first_prop_index, line_spec_index] = vtk_parse_params(valid_props, all_va_args);
if ( no_numerical_params < 3 | no_numerical_params > 3 )
error("Syntax is vtk_surf( x, y, c )");
end
if ( no_numerical_params == 3 )
x = nth (varargin,1);
y = nth (varargin,2);
z = x*0;
c = nth (varargin,3);
end
[nr nc] = size(x);
if ( nr < 2 | nc < 2 )
error("input has to be at least 2xN or Nx2 matrix");
end
m=nc; n=nr;
i=0:m-2;
j=0:n-2;
[i,j]=meshgrid(i,j);
i=i(:); j=j(:);
t=[i*n+j,i*n+(j+1),(i+1)*n+(j+1) ; i*n+j (i+1)*n+(j+1),(i+1)*n+j]; %1; one way to construct the triangles
if ( first_prop_index > 0 )
f=vtk_trisurf(t+1,x(:),y(:),z(:),c(:),'Interpolation','Flat',varargin{first_prop_index:length(varargin)});
else
f=vtk_trisurf(t+1,x(:),y(:),z(:),c(:),'Interpolation','Flat');
end
endfunction
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