From afb479d766ccb97291acae27afd484a63c28c7e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20Scho=CC=88nberger?=
 <hannesschoenberger@gmail.com>
Date: Sun, 15 Jul 2012 17:51:34 +0200
Subject: [PATCH] geometric_transform can transform single coordinate tuple

---
 skimage/transform/geometric.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/skimage/transform/geometric.py b/skimage/transform/geometric.py
index edb3d014..2051e241 100644
--- a/skimage/transform/geometric.py
+++ b/skimage/transform/geometric.py
@@ -43,13 +43,22 @@ def geometric_transform(coords, matrix):
     coords : Nx2 array
             transformed coordinates
     """
+    coords = np.asarray(coords)
+    shape = coords.shape
+    if shape == (2,):
+        coords = np.array([coords])
+
     x, y = np.transpose(coords)
     src = np.vstack((x, y, np.ones_like(x)))
     dst = np.dot(src.transpose(), matrix.transpose())
     # rescale to homogeneous coordinates
     dst[:, 0] /= dst[:, 2]
     dst[:, 1] /= dst[:, 2]
-    return dst[:, :2]
+
+    if shape == (2,):
+        return dst[0, :2]
+    else:
+        return dst[:, :2]
 
 
 class GeometricTransformation(object):