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matlabhandle

Save an image from an axis handle - Matlab

How can I save an image from the handle of an axis (handles.imageAxe) using imwrite or other native matlab function?

The code:

% export_fig(handles.imageAxe, Name,  '-jpg -m2.5'); %// WORKS
imwrite(handles.imageAxe, Name); %// DOES NOT WORK
Solution

  • The handle of the axis does not represent an 'image' in the matlab sense.

    You can either:

    A) export the figure:

    saveas( handles.imageAxe , 'mysavedfig.jpg' )

    or

    B) capture a frame (the content of the axis) with getframe, then write an actual image

    F = getframe(handles.imageAxe) ;
imwrite(F.cdata,'mysavedframe.jpg','jpg')

    Read the doc for saveas, getframe and imwrite to better tune it to your needs.