[FIXED] Is there a way to detect zoom in Matplotlib plots and set minor tick format according to zoom level?

Issue

I want to plot a large data range but have ability to zoom in and gain resolution. I need to use custom major and minor tick formatting therefore I lose the ability to have them set dynamically with the zoom level. Is there a practical solution to this problem?

Solution

You just need to create your own tick formatter and then attach it to the axes object.

This example has everything you need. Essentially, create a function which takes the value of the tick, and returns what you would like the tick label to be - call it my_formatter, and then do this:

ax.xaxis.set_major_formatter(ticker.FuncFormatter(my_formatter))

and optionally

ax.xaxis.set_minor_formatter(ticker.FuncFormatter(my_formatter))

Where the ticker.FuncFormatter(my_function) creates the custom formatter for you.

Answered By - will