From 7b4fea2db4c318e20a182b535eb5383964f8ed40 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20Scho=CC=88nberger?= <jschoenberger@demuc.de>
Date: Mon, 30 Apr 2012 16:33:58 +0200
Subject: [PATCH] fixed bug when sigma is set manually

---
 skimage/filter/thresholding.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/skimage/filter/thresholding.py b/skimage/filter/thresholding.py
index efef9a45..51907347 100644
--- a/skimage/filter/thresholding.py
+++ b/skimage/filter/thresholding.py
@@ -71,6 +71,8 @@ def threshold_adaptive(image, block_size, method='gaussian', offset=0,
         if param is None:
             # automatically determine sigma which covers > 99% of distribution
             sigma = (block_size - 1) / 6.0
+        else:
+            sigma = param
         scipy.ndimage.gaussian_filter(image, sigma, output=thresh_image,
             mode=mode)
     elif method == 'mean':