i want to alter dpi
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how can i alter dpi of an image and set it to 300.
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Sean de Wolski
il 25 Feb 2013
In print? Specify the rnumber
print(gcf,'-r300')
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Sean de Wolski
il 25 Feb 2013
Yes. You save a figure as an image with the print command:
figure;
surf(peaks);
print(gcf,'-r300','-dpng','test.png')
And for more info:
doc print
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Walter Roberson
il 25 Feb 2013
dpi is not an physical property of images, and cannot be set by imwrite() or print(). In some kinds of images, dpi can be set in auxillary information headers, such as EXIF headers. Unfortunately MATLAB does not have any routines that can write those headers. See http://www.mathworks.com/matlabcentral/newsreader/view_thread/298784
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