Obtain source code from  http://sourceforge.net/projects/matplotlib/

For ASAP 2.1 you need at version >= 0.87

Newer versions of matplotlib require "numpy" version 0.9.8 (Not >= 1.0). 
This is available from http://www.numpy.org  Make sure you get version 0.9.8. 
To install numpy

{{{ 
  cd /some/dir
  tar zxvf ~/numpy-0.9.8.tar.gz
  cd numpy-0.9.8
  
  python setup.py build

  python setup.py install

}}}

To install matplotlib

{{{
  
  cd /some/dir
  
tar zxvf ~/matplotlib-0.87.4.tar.gz

  tar zxvf ~/matplotlib-0.87.4.tar.gz
  cd matplotlib-0.87.4

  python setup.py build

  python setup.py install

}}}

Please refer to the o/s [wiki:ASAPInstall notes] for suggested packages which need to be installed to compile matplotlib