On Thu, Jan 6, 2011 at 11:36 AM, Benjamin Root <ben.r...@ou.edu> wrote:
> On Thu, Jan 6, 2011 at 11:15 AM, John Hunter <jdh2...@gmail.com> wrote:
>>
>> On Thu, Jan 6, 2011 at 10:58 AM, Benjamin Root <ben.r...@ou.edu> wrote:
>>
>> > I thought that problem was already addressed in a previous patch? John,
>> > could this be another "gremlin"? Or did I mis-understand the whole
>> > issue
>> > absolute path problem?
>>
>> My understanding is that because sphinx switches the current working
>> directory during execution, this path must be absolute. We could get
>> around this by processing a relative path internally in mpl at rc load
>> time, and converting it into an absolute path assuming the path is
>> relative to the directory containing the rc file.
>>
>> JDH
>
>
> I actually think that would be a better solution. Python's os.path module
> is very powerful with functions like isabs(), abspath(), expanduser(),
> expandvars() and realpath(). Of course, one could easily go overboard with
> this, but I am sure we could probably allow for something real simple like
> expandvars() so that packagers could utilize environment variables for the
> build process?
Here is a candidate patch...this will be processed once on module load
time. I considered doing it in the validate method of the rc params
in rcsetup, but I am not sure this is better because if users are
overriding the variable at runtime, we should probably just let them
do what they want.
I am not sure if this qualifies as a "one time hack" that makes mpl so
difficult to maintain -- Sandro and Ben can weigh in -- but at least
we are doing it to make their lives easier :-)
Index: lib/matplotlib/__init__.py
===================================================================
--- lib/matplotlib/__init__.py (revision 8898)
+++ lib/matplotlib/__init__.py (working copy)
@@ -762,6 +762,13 @@
# this is the instance used by the matplotlib classes
rcParams = rc_params()
+
+if rcParams['examples.directory']:
+ if not os.path.isabs(rcParams['examples.directory']):
+ _basedir, _fname = os.path.split(matplotlib_fname())
+ _fullpath = os.path.join(_basedir, rcParams['examples.directory'])
+ rcParams['examples.directory'] = _fullpath
+
rcParamsOrig = rcParams.copy()
rcParamsDefault = RcParams([ (key, default) for key, (default, converter) in \
@@ -770,6 +777,8 @@
rcParams['ps.usedistiller'] =
checkdep_ps_distiller(rcParams['ps.usedistiller'])
rcParams['text.usetex'] = checkdep_usetex(rcParams['text.usetex'])
+
+
def rc(group, **kwargs):
"""
Set the current rc params. Group is the grouping for the rc, eg.
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