Matplotlib 1.3.1 to 1.4.2 in ubuntu 14.04

UPGRADING FROM MATPLOTLIB 1.3.1 TO 1.4.2 IN UBUNTU 14.04

The preferred method for installing matplotlib is to use the default package manager for you system. In Ubuntu the default package manager is APT and can be used to install packages in the following way:

sudo apt-get install build-essential 
sudo apt-get install python-pip
sudo apt-get install libfreetype6-dev libxft-dev

sudo apt-get install python-matplotlib
This method however failed to upgrade to the newest version so I attempted to upgrade using the python package manager (PIP)

# Upgrade to matplotlib 1.4 using PIP
sudo pip install --upgrade matplotlib