How to apply ax.margins to current axes limits?

Is there a way to use ax.margins to adjust the axes limits, after the axes
limits have already been adjusted using ax.set_ylim? It appears that
ax.margins has effect only if ax.set_ylim has not been used.

This notebook
http://nbviewer.jupyter.org/github/qap/python_examples/blob/matplotlib/matplotlib/matplotlib_axmargins.ipynb

describes a situation in which this need may arise.

Note: the y-axis is just an example, the same also applies to the x-axis (
ax.set_xlim).
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The margins are only used when Matplotlib auto-selects the limits for you.
Once you have used `set_xlim` or `set_ylim` we take those as explicit
user-intent and will not automatically change the limits again.

Tom

ยทยทยท

On Sat, Jan 28, 2017 at 11:00 AM Jack Yu <llacque at gmail.com> wrote:

Is there a way to use ax.margins to adjust the axes limits, after the
axes limits have already been adjusted using ax.set_ylim? It appears that
ax.margins has effect only if ax.set_ylim has not been used.

This notebook

Jupyter Notebook Viewer

describes a situation in which this need may arise.

Note: the y-axis is just an example, the same also applies to the x-axis (
ax.set_xlim).
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