floats as index aint no good

vviewer/Image4D.py

@@ -93,6 +93,7 @@ class Image4D(Image):
         """
         if self.playing == False:
             if coord is not None:
+                coord = map(lambda x: int(x),coord)
                 return self.image_res[coord[0],coord[1],coord[2]]
             else:
                 return self.image_res[self.coord[0],self.coord[1],self.coord[2]]
@@ -393,7 +394,7 @@ class Image4D(Image):
         """
         if self.affine_res_inv is not None and self.timeseries is not None:
             xyz = np.array([self.coord[0], self.coord[1], self.coord[2], 1])
-            map_xyz = np.dot(self.affine_res_inv, xyz)
+            map_xyz = np.dot(self.affine_res_inv, xyz).astype(np.int32)
             shp = self.image.get_data().shape
             # TODO: make this a shorter comparison
             if (map_xyz[0] >= 0 and map_xyz[0] < shp[0] and