saving figure at specefic resolution

2011 5 19
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Hi,
I'm loading an image (with imread) and then I'm plotting some points on this images (with scatter and imshow for the image). The problem is, while using saveas to save the figure, im getting a completly different resolution. My image is 1360*768 pixels and is saved at 1200*900. I tried setting 'PaperPositionMode' to auto - but then I'm getting an 2384*1335 image saved. Also tried changing 'papersize' and 'paperposition' but still, i cant seem to have the figure saved at 1360*768. Does anyone know how to do this, I'v tried all the suggestions i found related to this subject but none worked.
Thanks.

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Arnaud Miege
Arnaud Miege 2011-5-19

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Use the print command with the -r flag.
HTH,
Arnaud

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Arnaud Miege
Arnaud Miege 2011-5-19
PS: read the section "Resolution Considerations"
lital
lital 2011-5-19
Thanks
I'm still having problems with this, as -r sets the dpi of the saved image. I tried changing the paperposition to [0 0 1360/150 768/150], papersize [1360/150 768/150] (while working with inches) and I used
-r150 in print, that resulted in about a 500*300 pixel resolution.
What am I doing wrong?
Arnaud Miege
Arnaud Miege 2011-5-19
Have a look at this solution and see if that addresses your problem:
http://www.mathworks.com/support/solutions/en/data/1-9Q4WXL/
lital
lital 2011-5-19
Thank You so much!

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Andrew Fowler
Andrew Fowler 2011-5-19

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Have you tried IMWRITE? Depending on the format you want to save as, you can specify the resolution in the command. You have to check for each format what the actual parameters are called (just use help imwrite to see specifics), but here is an example for a TIFF file:
imwrite(a, 'your_image.tif','TIFF','Resolution',[1360 768])

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lital
lital 2011-5-19
Thanks for your answer.
imwrite only accepts an image (a matrix representing the pixels of an image) to save and I'm trying to save the figure holding the image with the scatter plot on it.

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