Acquire data from a cartesian diagram in pdf format

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I start by saying that I am a new user of matlab, so try to be more detailed as possible.
I have a cartesian graphic with 2 axes (x and y) in a pdf format (or png ise equivalent) that represent the values of y for every x in an interval.
I need to acquire the data from this image so that the program can know every couple of (x,y) values.
How can I import these information in matlab? There is an "automatic" command for it?
Thank's a lot

Accepted Answer

ME on 30 Oct 2019
I don't think there is an automatic way to do this, but you could use GRABIT from the File Exchange which will allow you to grab the data with a few mouse clicks.
I hope that helps.

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