In my thesis, I handle polarimetric observations of Venus with Venus Express. Because of the north polar elliptical orbit of the spacecraft, when observing in nadir there is a link between the phase angle and the latitude of observation1.
Though, this is not always easy to understand so I found the need to plot my polarimetric measurements as a function of phase angle, but also as a function of latitude. I was thinking of plotting the phase angle on the bottom x-axis, and the latitude on the top x-axis. Can we do that in Python/Matplotlib?
Of course you can!
Matplotlib has brilliant functions called twinx and twiny that take an axis object and duplicate it keeping the same x or y axis that the original. Therefore only the x/y axis is editable as the other is ruled by the original axes.
This can be used to plot two independent curves with different y-axis, but also to plot one value with two units (e.g. Celsius degrees and Farenheit degrees). In the latter case, the relation is known…
Of course you can!
Matplotlib has brilliant functions called twinx and twiny that take an axis object and duplicate it keeping the same x or y axis that the original. Therefore only the x/y axis is editable as the other is ruled by the original axes.
This can be used to plot two independent curves with different y-axis, but also to plot one value with two units (e.g. Celsius degrees and Farenheit degrees). In the latter case, the relation is known…