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- function map = flag(m)
- %FLAG Alternating red, white, blue, and black color map.
- % FLAG(M) returns an M-by-3 matrix containing a "flag" colormap.
- % Increasing M increases the granularity emphasized by the map.
- % FLAG, by itself, is the same length as the current colormap.
- %
- % For example, to reset the colormap of the current figure:
- %
- % colormap(flag)
- %
- % See also HSV, GRAY, HOT, COOL, COPPER, PINK, BONE,
- % COLORMAP, RGBPLOT.
-
- % C. Moler, 7-4-91, 8-19-92.
- % Copyright (c) 1984-93 by The MathWorks, Inc.
-
- if nargin < 1, m = size(get(gcf,'colormap'),1); end
-
- % f = [red; white; blue; black]
- f = [1 0 0; 1 1 1; 0 0 1; 0 0 0];
-
- % Generate m/4 vertically stacked copies of f with Kronecker product.
- e = ones(ceil(m/4),1);
- map = kron(e,f);
- map = map(1:m,:);
-