/usr/share/freemat/toolbox/graph/surf.m is in freemat-data 4.0-5.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | % SURF SURF Surface Plot Function
%
% Usage
%
% This routine is used to create a surface plot of data. A
% surface plot is a 3D surface defined by the xyz coordinates
% of its vertices and optionally by the color at the vertices.
% The most general syntax for the surf function is
%
% h = surf(X,Y,Z,C,properties...)
%
% Where X is a matrix or vector of x coordinates, Y is a
% matrix or vector of y coordinates, Z is a 2D matrix of
% coordinates, and C is a 2D matrix of color values (the colormap
% for the current fig is applied). In general, X and Y should
% be the same size as Z, but FreeMat will expand vectors to match
% the matrix if possible.
% If you want the color of the surface to be defined by the height
% of the surface, you can omit C
%
% h = surf(X,Y,Z,properties...)
%
% in which case C=Z. You can also eliminate the X and Y
% matrices in the specification
%
% h = surf(Z,properties)
%
% in which case they are set to 1:size(Z,2) and 1:size(Y,2)
% respectively.
% You can also specify a handle as the target of the surf command
% via
%
% h = surf(handle,...)
%
% Copyright (c) 2002-2006 Samit Basu
% Licensed under the GPL
function ohandle = surf(varargin)
% Check for an axes handle
if (nargin>=2)
if (isnumeric(varargin{1}) && (length(varargin{1})==1) && ...
ishandle(varargin{1},'axes'))
handle = varargin{1}(1);
varargin(1) = [];
nargin = nargin - 1;
else
handle = newplot;
end
else
handle = newplot;
end
saveca = gca;
axes(handle);
% search for the propertyname/value pairs
propstart = 0;
if (nargin > 2)
propstart = nargin-1;
while ((propstart >= 1) && isa(varargin{propstart},'char') && ...
pvalid('line',varargin{propstart}))
propstart = propstart - 2;
end
propstart = propstart + 2;
end
propset = {};
if ((propstart > 0) && (propstart < nargin))
propset = varargin(propstart:end);
varargin(propstart:end) = [];
end
if (length(varargin) == 0)
h = surface(propset{:});
elseif (length(varargin) == 1)
h = surface('zdata',varargin{1},propset{:});
elseif (length(varargin) == 3)
h = surface('xdata',varargin{1},'ydata',varargin{2},...
'zdata',varargin{3},propset{:});
elseif (length(varargin) == 4)
h = surface('xdata',varargin{1},'ydata',varargin{2},...
'zdata',varargin{3},'cdata',varargin{4},propset{:});
else
error('Unrecognized arguments to surf command');
end
% These lines break pcolor
% if ~ishold
% view( handle, 3 );
% grid;
% end
axes(saveca);
if (nargout > 0)
ohandle = h;
end
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