force an image file to be in landscape mode

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Branko Celler
Branko Celler 2017-2-22
回答： Rik 2017-2-22
No matter what I do in saving an image to a file, the orientation of the file is in portrait mode NOT landscape. This requires me to rotate the image should I need to copy it to a document The following does not work;
% Force image to be saved in landscape mode
h=gcf;
set(h,'PaperOrientation','landscape');
set(h,'PaperUnits','normalized');
set(h,'PaperPosition', [0 0 1 1]);
orient landscape
print(gcf, '-dtiffn', imagefilename);

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回答（1 个）

Rik
Rik 2017-2-22
Do you really need to export it as the result of a figure? Anyway, you can use
imwrite(imrotate(imread(imagefilename),90),imagefilename)
to load, rotate by 90 degrees and write again.

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