change the colorbar width
Question:
I have created this, as you can see the colorbar is very thin, is there anyway of increasing the width of the colorbar without increasing the height
Answers:
You need to get hold of the axes of the colorbar.
Assuming you hold a reference to the colorbar in cbar you get to the axes via cbar.ax.
You can control the ratio of the height / width with ax.set_aspect(number). This will rescale the axes to match this ratio, but which way the rescaling is performed is not fully understood by me:
I might increase / decrease this number gradually in small steps and the axes would shrink / extent in one dimension to match the ratio accordingly. But at some point the behavior changes and further increase / decrease yields extension / shrinkage in the other dimension.
The documentation for axes.set_aspect says:
a circle will be stretched such that the height is num times the
width. aspect=1 is the same as aspect=’equal’
If you want to avoid this hassle completely you set ax.set_aspect('auto') and afterwards set the exact position of the axes explicitly with
ax.set_position((left, bottom, width, height))
The units are relative to the figure canvas and stretch from 0 to 1 with 0,0 being the bottom left corner of the canvas.
Example: set_position((0.1, 0.2, 0.4, 0.6)) will position the axes bottom left edge at (0.1, 0.2) and the top right edge at (0.1 + 0.4, 0.2 + 0.6)
I was able to get the desired width of the colorbar using a combination of fraction and aspect parameters: https://matplotlib.org/stable/api/_as_gen/matplotlib.pyplot.colorbar.html
I have created this, as you can see the colorbar is very thin, is there anyway of increasing the width of the colorbar without increasing the height
You need to get hold of the axes of the colorbar.
Assuming you hold a reference to the colorbar in cbar you get to the axes via cbar.ax.
You can control the ratio of the height / width with ax.set_aspect(number). This will rescale the axes to match this ratio, but which way the rescaling is performed is not fully understood by me:
I might increase / decrease this number gradually in small steps and the axes would shrink / extent in one dimension to match the ratio accordingly. But at some point the behavior changes and further increase / decrease yields extension / shrinkage in the other dimension.
The documentation for axes.set_aspect says:
a circle will be stretched such that the height is num times the
width. aspect=1 is the same as aspect=’equal’
If you want to avoid this hassle completely you set ax.set_aspect('auto') and afterwards set the exact position of the axes explicitly with
ax.set_position((left, bottom, width, height))
The units are relative to the figure canvas and stretch from 0 to 1 with 0,0 being the bottom left corner of the canvas.
Example: set_position((0.1, 0.2, 0.4, 0.6)) will position the axes bottom left edge at (0.1, 0.2) and the top right edge at (0.1 + 0.4, 0.2 + 0.6)
I was able to get the desired width of the colorbar using a combination of fraction and aspect parameters: https://matplotlib.org/stable/api/_as_gen/matplotlib.pyplot.colorbar.html