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- function h = pcolor(x,y,c)
- %PCOLOR Pseudocolor (checkerboard) plot.
- % PCOLOR(C) is a pseudocolor plot of matrix C. The screen is broken
- % into a rectangular "checkerboard" the same size as C. The value of
- % each element of C specifies the color in its corresponding rectangle.
- % The smallest and largest elements of C are assigned the first and
- % last colors given in the color table; colors for the remainder of the
- % elements in C are determined by table-lookup within the remainder of
- % the color table.
- % PCOLOR(X,Y,C), where X and Y are vectors or matrices, makes a
- % pseudocolor plot on the grid defined by X and Y. X and Y could
- % define the grid for a "disk", for example.
- % PCOLOR is really a SURF with its view set to directly above.
- % PCOLOR returns a handle to a SURFACE object.
- %
- % See also CAXIS, SURF, MESH, IMAGE.
-
- %-------------------------------
- % Additional details:
- %
- %
- % PCOLOR sets the View property of the SURFACE object to directly
- % overhead.
- %
- % If the NextPlot axis property is REPLACE (HOLD is off), PCOLOR resets
- % all axis properties, except Position, to their default values
- % and deletes all axis children (line, patch, surf, image, and
- % text objects). View is set to [0 90].
-
- % Copyright (c) 1984-93 by The MathWorks, Inc.
-
- % J.N. Little 1-5-92
-
- if nargin < 1
- error('Too few input arguments.');
- elseif nargin > 4
- error('Too many input arguments.')
- end
-
- cax = newplot;
- next = lower(get(cax,'NextPlot'));
- hold_state = ishold;
-
- if nargin == 1
- hh = surface(zeros(size(x)),x);
- [m,n] = size(x);
- lims = [ 1 n 1 m];
- elseif nargin == 3
- hh = surface(x,y,zeros(size(c)),c);
- lims = [min(min(x)) max(max(x)) min(min(y)) max(max(y))];
- else
- error('Must have one or three input arguments.')
- end
- if ~hold_state
- set(cax,'View',[0 90]);
- set(cax,'Box','on');
- axis(lims);
- end
- if nargout == 1
- h = hh;
- end
-