如何查询bokeh中的自动设置轴范围？

Question

I've created a plot and let bokeh choose the axis bounds automatically. Now I want to know what the min and max values of that axis are (specifically because I want to overlay the plot of a mathematical function and want to know over what range to evaluate it).

The obvious approach was to query fig.y_range.start and fig.y_range.end , but it appears those are set to None when autoscaled, so they look like input parameters.

How do I determine what the results of autoscaling were?

Answer 1

This information is not available in Python, those bounds are only computed in the browser, in JavaScript. If you need explicit details/control, you will need to set the ranges manually, eg

p = figure(x_range=(0, 137))