From ec5c339c682fb2187d77d2c35ce12cf77a95bb6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20Scho=CC=88nberger?=
 <hannesschoenberger@gmail.com>
Date: Tue, 10 Jul 2012 19:37:33 +0200
Subject: [PATCH] fix wrong exception type

---
 skimage/transform/geometric.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/skimage/transform/geometric.py b/skimage/transform/geometric.py
index 68f2dae8..4519af88 100644
--- a/skimage/transform/geometric.py
+++ b/skimage/transform/geometric.py
@@ -320,8 +320,8 @@ def estimate_transformation(ttype, src, dst, order=None):
     """
     ttype = ttype.lower()
     if ttype not in ESTIMATED_TRANSFORMATIONS:
-        raise NotImplemented('the transformation type \'%s\' is not'
-                             'implemented' % ttype)
+        raise ValueError('the transformation type \'%s\' is not'
+                         'implemented' % ttype)
     args = [src, dst]
     if order is not None and ttype == 'polynomial':
         args.append(order)