November 2018
Beginner to intermediate
214 pages
5h 2m
English
Content preview from Mastering Matplotlib 2.x
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How to add interactivity by capturing mouse events
Initially, you must import everything that we normally use and use the interactive Notebook backend. Now, the user is not familiar with asynchronous programming with the callback function. This takes in an event, which is then called when that event occurs. The important information of that event is passed as an argument to that function.
We will begin by defining a function called draw_circle (event). These are the events that are passed by Matplotlib callbacks, and they include information about the event. So, in the case of a mouse click, it would be where on the plot the click has occurred.
Call the plt.plot function with the x data and the y data of that event, along with a circle. Note ...
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