Re: [Matplotlib-users] Error with PDF output with usetex

[Damon M. <D.M...@wa...>]

>> Hi Jeff,
>> 
>> I am able to run the tex_demo.py with no problems and I can create
>> 
>> output files using the Agg backend.  When I try to use the PDF
>> 
>> backend, however, I get an error which stems from dviread.py (pasted
>> 
>> below).  Any thoughts on what could be going wrong?
>> 
>> Thanks!
>> 
>> Jeff
>> 
>> Hi Jeff,
>> 
>> How did you install matplotlib? From source yourself?
>> 
>> No, I'm using the Enthought Python Distribution (EPD64).
>> 
>> And when you installed matplotlib, did it see that you had dvipng installed?
>> 
>> FYI, you can do
>> 
>> which dvipng
>> 
>> to return the path where dvipng lives (if it is in your path already) or you
>> 
>> can do
>> 
>> locate dvipng
>> 
>> to do a search for the binary if it isn't already in your path.
>> 
>> P.S. You forgot to reply-all so everyone can see your response.
>> 
>> $ which dvipng
>> /usr/texbin/dvipng
>> 
>> I don't remember any complaints while running the EPD installer.
>> Would there be a way to check this?  Is the problem definitely related
>> to an inability to find dvipng, or could there be other possibilities?
>> 
>> Thanks,
>> Jeff
>> 
>> I had a similar problem. I don't think it's an inability to find dvipng, I
>> think it's that it couldn't find dvipng when matplotlib was built.
>> When matplotlib builds there'll be a section of text sent to stdout under
>> the heading of 'OPTIONAL DEPENDENCIES', there it will tell you whether it
>> found dvipng when it was building. Are you able to find this? If not, are
>> there install logs saved somewhere after you installed matplotlib?
> 
> I'm not able to find this.  The EPD installer comes as a Mac .pkg
> application which seems to hide everything that's going on.  It saves
> "Receipts", but these don't contain the kind of logs we're looking
> for, as far as I can tell.
> 
> On my previous laptop, I was using OS X Snow Leopard with python and
> matplotlib from an older EPD version, and I had no troubles.  Perhaps
> I need to ask the Enthought folks.
> 
> Thanks,
> Jeff

Hmm.

You could try installing from source as per http://matplotlib.sourceforge.net/faq/installing_faq.html#building-and-installing-from-source-on-osx-with-epd and at least that way you can see what's going on.

Damon McDougall
d.m...@wa...
http://damon.is-a-geek.com
B2.39
Mathematics Institute
Coventry
West Midlands
CV4 7AL