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matplotlib.pyplot - A great way to plot

http://matplotlib.org/users/pyplot_tutorial.html
It can be confusing in the beginning - there is this pylab module which are used in the examples on the scipy site, then there is pyplot, pylab and matplotlib.
As I understand, matplotlib is the main package and it has two modules - matplotlib.pylab, matplotlib.pyplot. The first one is designed for interactive use and the second one for batch/script use.
In the light of my experience with matplotlib.pyplot, I have found it to be very similar to MATLAB in usage.

Remember, the above are just plotting libraries. For manipulating vectors, matrices etc. it is the job of Numpy/Scipy

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