--- a/python/utils.py	Fri Nov 05 11:07:44 2010 -0400
+++ b/python/utils.py	Sun Nov 07 01:09:50 2010 -0500
@@ -132,6 +132,20 @@
 
 colors = PlottingPropertyValues('brgmyck') # 'w'
 
+def plotIndicatorMap(indicatorMap, squareSize):
+    from numpy import array, arange, ones, ma
+    from matplotlib.pyplot import pcolor
+    coords = array(indicatorMap.keys())
+    minX = min(coords[:,0])
+    minY = min(coords[:,1])
+    X = arange(minX, max(coords[:,0])+1.1)*squareSize
+    Y = arange(minY, max(coords[:,1])+1.1)*squareSize
+    C = -ones((len(Y), len(X)))
+    for k,v in indicatorMap.iteritems():
+        C[k[1]-minY,k[0]-minX] = v
+    masked = ma.masked_where(C<0,C)
+    pcolor(X, Y, masked)
+
 #########################
 # file I/O section
 #########################