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Re: [Matplotlib-users] matplotlib installation and ?'s Andre' Walker-Loud Mon Feb 20 22:01:10 2012

Hi William,

There is a company, Enthought, which offers a free package installer, which 
comes with 6 "essential" python libraries, including matplotlib.

http://www.enthought.com/products/epd_free.php

If you have an "edu" email account (you are an academic, or do academic 
research at a gov lab, like LBL) you can download their full set of libraries

http://www.enthought.com/products/edudownload.php

If not, and you think it is worth it (or can get your company to pay), starting 
at $199 you can download their package installer (and get their tech support).

Couple words about them:  I have no affiliation with them.  Some of their 
original employees were deeply involved in numpy.  They developed a 3D plotting 
library, Mayavi, which is pretty cool.


I am reasonably comfortable with my mac, installing src code etc.  I used to 
install everything myself (back on OS X Tiger).  Then, when I upgraded to Snow 
Leopard, I couldn't get it all to work out - I did an account migration from 
old to new, and then there were some issues (I think) relating to the 32 vs 64 
bit compatibility that I couldn't resolve.  I went to a friend who is good with 
computers to get help - he said "You should just use the Enthought installer - 
its so easy, that is what I do".  That helped me get over feeling like I had to 
do it all myself.  (Of course some day, when I have heaps of free time and no 
pressure from work, I will sort out how to do it all myself again....)

I am guessing if you want to link numpy against the full BLAS/LAPACK libraries 
for optimal speed on matrix manipulation etc, then you may need to do the 
installation yourself, including all the fortran libraries.  But at least with 
their package installer, it should work out of the box.  Also, it installs the 
whole suite as a "Framework" in /Library/Frameworks/Python.framework/Versions/ 
with a cleverly chosen Version so as not to mesh with your own installation.  
So you can install there version, based on 2.7 and your own version 2.7 and 
they won't interfere.  You'll just have to relink the /usr/bin/python and 
/usr/local/bin/python to which version you want.


Good luck,

Andre





On Feb 20, 2012, at 9:07 PM, William Jennings wrote:

> Hello mat plot lib users! 
> 
> I feel quite embarrassed that I’ve gone through 2 days of trying to get to 
> get numpy, scipy and matplotlib all to work nice with each other. I’ve 
> scraped through forums, stackoverflow and all the links that can bide me some 
> type of logic. Yet, alas I still fail wildly with this set of errors:
> 
> my current status is: just did a fresh install of my lion os and haven't 
> installed Xcode yet. I'm a little lost and have found only macports, homebrew 
> guides online only to be a slower failure. I really need to use this software 
> but I'm finding it difficult keeping straight what order and what I need to 
> install. Is it best to have python 2.6 or 2.72? if it's 2.72 should it be the 
> universal version from python.org? Once that is installed is it best to just 
> install numpy and scipy from github and then try matplotlib? I know I need to 
> install fortran and make sure that it's using G++ 4.2 and C++ 4.2 BEFORE i 
> run scipy and numpy setup... Yet, right now I'm floundering for a clear 
> example on 10 or so commands I should put into terminal and in the correct 
> order for how to install it. I promise once I learn how to install I'll put a 
> resource on the web or link back to some of the better resources. As for now 
> my freshly installed os computer is in your hands currently with python 2.71 
> that was preinstalled with Lion. That is all I've done thus far. 
> 
> Thank you !
> 
> Here is the old error I was getting when I used the home brew guide that I 
> found here: bit.ly/qGdKy9 
> In file included from src/backend_agg.cpp:11:
> In file included from src/_backend_agg.h:34:
> agg24/include/agg_renderer_outline_aa.h:1368:45: error: binding of reference 
> to type ‘agg::line_profile_aa’ to a value of type ‘const 
> agg::line_profile_aa’ drops qualifiers
> line_profile_aa& profile() { return *m_profile; }
> ^~~~~~~~~~
> 1 error generated.
> error: command ‘/usr/bin/clang’ failed with exit status 1
> —————————————-
> Command /Users/Will/.virtualenvs/test1/bin/python -c “import 
> setuptools;file=’/Users/Will/.virtualenvs/test1/src/matplotlib/setup.py’; 
> exec(compile(open(file).read().replace(‘\r\n’, ‘\n’), file, ‘exec’))” develop 
> –no-deps failed with error code 1 in 
> /Users/Will/.virtualenvs/test1/src/matplotlib
> Storing complete log in /Users/Will/.pip/pip.log
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