data from JPEG
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I have a *.jpeg image of a x-y scatter plot (not monotonic), and I would like to extract the data points. Any ideas? I was going to do it manually by pixels, but I figured that there is a good way to do that with linear algebra.
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LALIT PANKAJ GROVER
2021-9-23
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/747544/image.png)
How can I extract the data from this jpeg file. Any suggestion are welcomed.
回答(1 个)
John Barber
2011-8-1
The File Exchange program GRABIT is a good way to extract data points from an image of a graph. Download it here: http://www.mathworks.com/matlabcentral/fileexchange/7173
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Image Analyst
2011-8-1
FFT function ?!?!? Do you know what the FFT is?
I suppose you could use image analysis (thresholding, labeling, regionprops) if your points were well isolated and you had already cropped the axes, tick marks, etc. out of your image. I second Ashish's suggestion.
lakshmi boddu
2018-4-3
Hello sir , can you please help me how to draw a scatter plot for a jpg image
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