Digitize graphs from image

hello dear rooters.
Is it possible to digitize graphs and diagrams from image in ROOT (png, pdf etc)?

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Not really … there is no tool doing that

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You can try something like http://www.graphreader.com/, ROOT cannot do this on its own.

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It’s a good idea to contact the author and ask for the histogram: this adds to getting the community towards sharing the data, not just the plots! :wink: