SaltyCrane Blog — Notes on JavaScript and web development

How to use the pylab API vs. the matplotlib API

This article has a good description of the 2 API's in matplotlib: the pylab API and the matplotlib API. I've been using the pylab interface because it is easier, especially coming from a matlab background. But I wanted to get direct access to the matplotlib classes so I needed to use the matplotlib API. Here is a simple example that creates a .png figure using the 2 different API's.

Here is the example using the pylab API:
from pylab import *


Here is the example using the matplotlib API:
from matplotlib.figure import Figure
from matplotlib.backends.backend_agg import FigureCanvasAgg

fig = Figure(figsize=[4,4])
ax = fig.add_axes([.1,.1,.8,.8])
ax.scatter([1,2], [3,4])
canvas = FigureCanvasAgg(fig)