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HOW TO GET X, Y CO-ORDINATE VALUE FROM A IMAGE FILE generated by Matlab program?

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M.K.H. CHANDAN
M.K.H. CHANDAN 2015-8-12
回答： Walter Roberson 2015-8-12
I have following vectors x = 1 : 10 :100; y = 1 : 20 :200; I have plotted using plot(x,y) command and saved the output file (.fig file) in line.jpg I need a method which will take input as line.jpg and will return me x & y in vector as
x =
1 11 21 31 41 51 61 71 81 91
y =
1 21 41 61 81 101 121 141 161 181
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Walter Roberson
Walter Roberson 2015-8-12
Did you save the output as a .fig file or as a .jpg file?
If you are saving as an image file such as .jpg, would it be possible for you to switch to using .tiff or .png files? .jpg files make this task more difficult.

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Walter Roberson
Walter Roberson 2015-8-12
http://www.mathworks.com/matlabcentral/fileexchange/7173-grabit
Note: it is all much easier to do from a .fig file -- the .fig file has the actual data in it.

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