From e94ea51637a917a52cea0606f807ac5ddb18fadf Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauld.mccarthy@gmail.com>
Date: Wed, 8 Jun 2016 14:27:54 +0100
Subject: [PATCH] ImageWrapper defaults to cal_min/cal_max for data range.
---
fsl/data/imagewrapper.py | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fsl/data/imagewrapper.py b/fsl/data/imagewrapper.py
index 3ea32d1cb..ad71e9103 100644
--- a/fsl/data/imagewrapper.py
+++ b/fsl/data/imagewrapper.py
@@ -58,10 +58,16 @@ class ImageWrapper(notifier.Notifier):
self.__image = image
self.__name = name
+ hdr = image.get_header()
+
# The current known image data range. This
# gets updated as more image data gets read.
- self.__range = None, None
-
+ # We default to whatever is stored in the
+ # header (which may or may not contain useful
+ # values).
+ self.__range = (float(hdr['cal_min']),
+ float(hdr['cal_max']))
+
# We record the portions of the image that have
# been included in the data range calculation, so
# we do not unnecessarily re-calculate ranges on
@@ -78,8 +84,6 @@ class ImageWrapper(notifier.Notifier):
def dataRange(self):
"""Returns the currently known data range as a tuple of ``(min, max)``
values.
-
- If the data range is completely unknown, returns ``(None, None)``.
"""
return tuple(self.__range)
--
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