Creating a plot from an image of the plot

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Asked 6 years, 2 months ago

Modified 6 years, 2 months ago

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Import["https://i.imgur.com/vNqm0Em.png"]

I want to create a plot of it, consistent with the scale in the picture, so I can find the area under the graph on certain intervals.

I followed the steps at How to generate a Graph from a picture of a graph? but I get a completely black picture after I run the command

vertexI = SelectComponents[i, "Count", 10 < # < 100 &]

How can I get the plot I want and find the area under the graph?

m_goldberg

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asked Sep 22, 2018 at 20:03

Alex1994

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2

$\begingroup$ related: Recovering data points from an image $\endgroup$
– kglr
Commented Sep 22, 2018 at 20:12
1

$\begingroup$ Also related: How to make a curve selectable from a scanned image and convert it to a list of coordinates and Extracting data from analog screen photograph $\endgroup$
– C. E. ♦
Commented Sep 22, 2018 at 20:48
$\begingroup$ Comapre Wiki:Graph and Wiki:Plot, and consider which noun is less confusing in computerscience & math related context. $\endgroup$
– Johu
Commented Sep 22, 2018 at 20:59
$\begingroup$ How robust does this need to be? Is it just for this picture or does it have to work on other similar pictures as well? $\endgroup$
– C. E. ♦
Commented Sep 22, 2018 at 21:00

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