How is the dataindex from the datacursormode calculated?

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Sion Jung
Sion Jung 2021-3-22
编辑： Matt J 2021-3-22
I'm trying to convert a MATLAB code for a GUI into python pyqt5 GUI. It seems like python doesn't really have a datacursormode like that in MATALB.
What I would do in MATLAB is
  1. activate the datacursor mode
  2. pick a point from the plot
  3. obtain the dataindex
  4. update the plot based on that data index
I think I would have to figure out how the dataindex from datacursormode in MATLAB is calculated and make another code for that in python. Is there a documentation that explains how the dataindex is calculated or some other source that I could get some help?

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回答（1 个）

Matt J
Matt J 2021-3-22
编辑：Matt J 2021-3-22
In a 2D plot, the dataindex i is almost certainly the one such that XData(i),YData(i) is closest to where you clicked.

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