1997.01.30 23:32 "write subset", by Thomas Loecherbach

Is there a way to write a subset of image data to a tiff file? I need to filter a large image, thus read in only subset of the input-image, and then want to write the processed subsets to the disk. I thus need to access the the output file at arbitrary positions instead of writing scanline after scanline.

A similar problem: can I open a file for read/write (I don't want to append a new tiff directory) and read/write scanlines?

Any hints would be greatly appreciated.

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   Thomas Loecherbach
   Hammon, Jensen, Wallen and Ass.
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