finally added proper (in my opinon) exception handling to the grid's run_baker method. it should properly autocorrect, and switch the extra point lookup scheme to connectivity-based if solving the system of equations yields a singular solution

bin/grid_regular.py

@@ -6,30 +6,38 @@ import pickle
 from grid import simple_rect_grid, simple_random_grid
 from baker import run_baker
 
+from tools import smberror
+
 qfile = '/tmp/grid_regular.txt'
 
 if __name__ == '__main__':
   try:
     rx = int(sys.argv[1])
     ry = int(sys.argv[2])
-  except ValueError as e:
-    print e
+  except (IndexError, ValueError) as e:
+    print "problem with argv: %s" % e
     rx = 4
     ry = 4 * rx
 
   source_mesh = simple_rect_grid(rx, ry)
-  print source_mesh
+
+  # print source_mesh
 
   X = [0.1, 0.1]
 
-  (R, S) = source_mesh.get_simplex_and_nearest_points(X, extra_points=4)
-  print "R for nearest-neighbor:\n", R
-  print "S for nearest-neighbor:\n", S
-  print run_baker(X, R, S)
+  try:
+    (R, S) = source_mesh.get_simplex_and_nearest_points(X, extra_points=4)
+    print "R for nearest-neighbor:\n", R
+    print "S for nearest-neighbor:\n", S
+    print run_baker(X, R, S)
+  except smberror as e:
+    print "caught error: %s" % e
+    (R, S) =  source_mesh.get_points_conn(X)
+    print "R for connectivity:\n", R
+    print "S for connectivity:\n", S
+    print run_baker(X, R, S)
 
-  (R, S) =  source_mesh.get_points_conn(X)
-  print "R for connectivity:\n", R
-  print "S for connectivity:\n", S
-  print run_baker(X, R, S)
 
+  print "repeating the above just using the grid object:"
+  print source_mesh.run_baker(X)
   open(qfile, 'w').write(source_mesh.for_qhull())