Extract a MATLAB plot in a text file of points
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Hi
I would like to ask for your help about extracting a 2D plot in Matlab into a text file containing an array of the plots points (x and y). What should I do excactly?
Thanks for the reply
Here's the figure. It's a simple sinusoidal curve along 1000 points.
![](https://www.mathworks.com/matlabcentral/images/broken_image.png)
I just one to extract the y values and the x values in a text file containing 2 arrays of points (x and y)
Thanks very much
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Respuestas (1)
Jan
el 13 de Dic. de 2012
It seems liek you do not have to extract the data from the figure, because you have constructed them directly. Then:
x = 1:length(I);
y = I;
fid = fopen('YourFileName.txt', 'w');
if fid == -1, error('Cannot open file for writing.'); end
fprintf(fid, '%g %g\n', transpose([x; y]));
fclose(fid);
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