I'm using NSBitMapImageRep's -representationUsingType:properties:
method to convert data to JPEG, TIFF, etc. I'd like to be able to
specify the DPI of the image. I can calculate the right number of
pixels needed for a given DPI OK, but the image always comes up as
having 72 dpi when opened in another app. Is there a way to set this
property at this level, or am I forced to drop down into Image I/O?
I had hoped that the properties passed at this level (such as
kCGImagePropertyDPIWidth) would just get passed down to the lower
levels, but that doesn't appear to be the case.
tia,
Graham
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