Simplified test requirements, dropping scikit-image and freeimage.

closes #51

docs/source/detailed_installation.rst

@@ -56,17 +56,13 @@ packages/RPMs/ports/whatever without going through pip.
 Mac OS X
 --------
 All the necessary packages are available to use glymur with Python 3.3 via
-MacPorts.  A minimal set of ports includes
+MacPorts.  You should install the following set of ports:
 
       * python33
       * py33-numpy
       * py33-distribute
-
+      * py33-matplotlib (optional, for running certain tests)
-To run all the testing, one of the following combinations of ports must
+      * py33-Pillow (optional, for running certain tests)
-additionally be installed:
-
-      * py33-scikit-image and either py33-Pillow or freeimage
-      * py33-matplotlib and py33-Pillow
 
 MacPorts supplies both OpenJPEG 1.5.0 and OpenJPEG 2.0.0.  As previously
 mentioned, the 2.0.0 official release is not supported (although the 2.0+
@@ -98,15 +94,9 @@ meet the minimal set of requirements for running glymur.
       * python3-matplotlib (for running tests)
       * python3-matplotlib-tk (or whichever matplotlib backend you prefer)
 
-A few tests still will not run, however, unless one of the following
+Pillow is also needed in order to run the maximum number of tests, so
-combinations of RPMs / Python packages is installed.
+go ahead and install Pillow via pip since Pillow is not yet available
-
+in Fedora 18 default repositories::
-      * scikit-image and either Pillow or freeimage
-      * matplotlib and Pillow
-
-The 2nd route is probably the easiest, so go ahead and install Pillow
-via pip since Pillow is not yet available in Fedora 18 default
-repositories::
 
     $ yum install python3-devel       # pip needs this in order to compile Pillow
     $ yum install python3-pip
@@ -115,8 +105,7 @@ repositories::
 
 Fedora 17
 '''''''''
-Fedora 17 ships with Python 3.2 and 2.7, but OpenJPEG is only at version 1.4,
+Fedora 17 ships with Python 2.7 and OpenJPEG 1.4.
-so these steps detail working with Python 2.7 and the svn version of OpenJPEG.
 
 Required RPMs include::
 
@@ -137,11 +126,8 @@ combinations of RPMs / Python packages is installed.
 scikit-image was not available in the Fedora 17 default repositories, but 
 it was installable via pip::
 
-    $ yum install Cython       # pip needs this in order to compile scikit-image
+    $ yum install python-devel # pip needs this in order to compile Pillow
-    $ yum install python-devel # pip needs this in order to compile scikit-image
+    $ pip-python3 install Pillow --user
-    $ yum install freeimage    # scikit-image uses this as a backend
-    $ yum install scipy        # needed by scikit-image
-    $ pip-python install scikit-image --user
     $ pip-python install contextlib2 --user
     $ export PYTHONPATH=$HOME/.local/lib/python2.7/site-packages:$PYTHONPATH
 

glymur/test/test_opj_suite_neg.py

@@ -19,30 +19,15 @@ import pkg_resources
 
 from glymur.lib import openjp2 as opj2
 
-# Need some combination of matplotlib, PIL, or scikits-image for reading
+msg = "Matplotlib with the PIL backend must be available in order to run the "
-# other image formats.
-no_read_backend = True
-msg = "Either scikit-image with the freeimage backend or matplotlib "
-msg += "with the PIL backend must be available in order to run the "
 msg += "tests in this suite."
 no_read_backend_msg = msg
 try:
-    import skimage.io
+    from PIL import Image
-    try:
+    from matplotlib.pyplot import imread
-        skimage.io.use_plugin('freeimage')
+    no_read_backend = False
-        from skimage.io import imread
-        no_read_backend = False
-    except RuntimeError:
-        skimage.io.use_plugin('PIL')
-        from skimage.io import imread
-        no_read_backend = False
 except:
-    try:
+    no_read_backend = True
-        from PIL import Image
-        from matplotlib.pyplot import imread
-        no_read_backend = False
-    except:
-        pass
 
 from glymur import Jp2k
 import glymur

glymur/test/test_opj_suite_write.py

@@ -19,30 +19,15 @@ import numpy as np
 
 from glymur.lib import openjp2 as opj2
 
-# Need some combination of matplotlib, PIL, or scikits-image for reading
+msg = "Matplotlib with the PIL backend must be available in order to run the "
-# other image formats.
-no_read_backend = True
-msg = "Either scikit-image with the freeimage backend or matplotlib "
-msg += "with the PIL backend must be available in order to run the "
 msg += "tests in this suite."
 no_read_backend_msg = msg
 try:
-    import skimage.io
+    from PIL import Image
-    try:
+    from matplotlib.pyplot import imread
-        skimage.io.use_plugin('freeimage')
+    no_read_backend = False
-        from skimage.io import imread
-        no_read_backend = False
-    except RuntimeError:
-        skimage.io.use_plugin('PIL')
-        from skimage.io import imread
-        no_read_backend = False
 except:
-    try:
+    no_read_backend = True
-        from PIL import Image
-        from matplotlib.pyplot import imread
-        no_read_backend = False
-    except:
-        pass
 
 from glymur import Jp2k
 import glymur