FIX: Pass a C-contiguous array to points_in_polygon (#409)

chaco/tools/lasso_selection.py

@@ -2,7 +2,7 @@
 """
 # Major library imports
 import numpy
-from numpy import array, empty, sometrue, transpose, vstack, zeros
+from numpy import array, empty, sometrue, vstack, zeros, ascontiguousarray
 
 # Enthought library imports
 from traits.api import Any, Array, Enum, Event, Bool, Instance, \
@@ -308,8 +308,9 @@ def _map_data(self, point):
     def _get_data(self):
         """ Returns the datapoints in the plot, as an Nx2 array of (x,y).
         """
-        return transpose(array((self.plot.index.get_data(), self.plot.value.get_data())))
-
+        points = array((self.plot.index.get_data(),
+                        self.plot.value.get_data()))
+        return ascontiguousarray(points.T)
 
     #------------------------------------------------------------------------
     # Property getter/setters