ginput function in Julia PyPlot

Hi, I was wondering if there's any known example of using `ginput` function in Julia. This function allows you to take datapoints by clicking the plot, which if often easy and helpful.

No file or test is named. Start by locating the PyPlot binding for matplotlib's ginput function and checking matplotlib's interactive plotting documentation; done means a verified Julia usage example is documented or added to the appropriate project guidance.

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