diff toolboxes/FullBNT-1.0.7/KPMtools/image_rgb.m @ 0:e9a9cd732c1e tip

first hg version after svn

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/FullBNT-1.0.7/KPMtools/image_rgb.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,36 @@
+function image_rgb(M)
+% Show a matrix of integers as a color image.
+% This is like imagesc, except we know what the mapping is from integer to color.
+% If entries of M contain integers in {1,2,3}, we map
+% this to red/green/blue 
+
+cmap = [1 0 0; % red
+	0 1 0; % green
+	0 0 1; % blue
+	127/255 1 212/255]; % aquamarine
+image(M)
+set(gcf,'colormap', cmap);
+
+if 1
+  % make dummy handles, one per object type, for the legend
+  str = {};
+  for i=1:size(cmap,1)
+    dummy_handle(i) = line([0 0.1], [0 0.1]);
+    set(dummy_handle(i), 'color', cmap(i,:));
+    set(dummy_handle(i), 'linewidth', 2);
+    str{i} = num2str(i);
+  end
+  legend(dummy_handle, str, -1);
+end
+
+if 0
+[nrows ncols] = size(M);
+img = zeros(nrows, ncols, 3);
+for r=1:nrows
+  for c=1:ncols
+    q = M(r,c);
+    img(r,c,q) = 1;
+  end
+end
+image(img)
+end