Recently, I had to deal with a set of data, some from experiments, and some obtained using MATLAB “Curve Fitting Tool”. As much as I like MATLAB figures, I usually find Excel features more desirable for good-looking plots! So, I needed to extract the data of Curve Fitting Tool. Here is what I did:
Save the figure as a “.fig” file.
Make a m-file with the following code to get the x, y data of the curve!
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% Reads the figure file f=openfig('Sina.fig'); % Gets the object of type line from the figure h=findobj(f,'type','line'); % Obtains the "x" and "y" data of the curves x_data=get(h,'xdata'); y_data=get(h,'ydata'); |
Then you have access to the data, and you can get the arrays as
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% Assuming there are only 2 curves in the figure % Gets the data as arrays % x-values of 2 curves x_data_curve_fit = x_data {1,1}; x_data_experimental = x_data{1,2}; % y-values of 2 curves y_data_curve_fit = y_data {1,1}; y_data_experimental = y_data{1,2}; |
Then, your data is ready to copy/export to Excel.