matplotlib — interactively select points or locations?

Question

In R, there is a function locator which is like Matlab\'s ginput where you can click on the figure with a mouse and select any x,y coordinate. In a

Answer 1

Wow many years have passed! Now matplotlib also support the ginput function which has almost the same API as Matlab. So there is no need to hack by the mpl-connect and so on any more! (https://matplotlib.org/3.1.1/api/_as_gen/matplotlib.pyplot.ginput.html) For instance,

plt.ginput(4)

will let the user to select 4 points.