How can I change the x axis in matplotlib so there is no white space?

Question

So currently learning how to import data and work with it in matplotlib and I am having trouble even tho I have the exact code from the book.

This is what t

Answer 1

In matplotlib 2.x there is an automatic margin set at the edges, which ensures the data to be nicely fitting within the axis spines. In this case such a margin is probably desired on the y axis. By default it is set to 0.05 in units of axis span. To set the margin to 0 on the x axis, use

plt.margins(x=0)

or

ax.margins(x=0)

depending on the context. Also see the documentation.

In case you want to get rid of the margin in the whole script, you can use

plt.rcParams['axes.xmargin'] = 0

at the beginning of your script (same for y of course). If you want to get rid of the margin entirely and forever, you might want to change the according line in the matplotlib rc file:

axes.xmargin : 0
axes.ymargin : 0

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Alternatively to changing the margins, use plt.xlim(..) or ax.set_xlim(..) to manually set the limits of the axes such that there is no white space left.