From 5280cacb829273790e6199624aefda91be2849b6 Mon Sep 17 00:00:00 2001
From: Stefan van der Walt <stefan@sun.ac.za>
Date: Mon, 29 Sep 2014 23:10:35 +0200
Subject: [PATCH] Avoid matplotlib testing problems on Travis-CI

---
 skimage/draw/draw.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/skimage/draw/draw.py b/skimage/draw/draw.py
index cd0b1d9b..03b554c7 100644
--- a/skimage/draw/draw.py
+++ b/skimage/draw/draw.py
@@ -6,6 +6,11 @@ from ._draw import _coords_inside_image
 from .._shared._geometry import polygon_clip
 from ._draw import line
 
+from skimage._shared.version_requirements import is_installed
+matplotlib_installed = is_installed('matplotlib')
+if not matplotlib_installed:
+    warn('Polygon perimeter drawing requires matplotlib')
+
 
 def _ellipse_in_shape(shape, center, radiuses):
     """Generate coordinates of points within ellipse bounded by shape."""