2003.08.01 19:09 "[Tiff] How to change a tag in an existing TIFF?", by Andrey Kiselev

I want to change a tag value within an existing TIFF file. Opening in "a"ppend mode and subsequent TiffSetField have no effect.

You should call TIFFRewriteDirectory() after TIFFSetField(). But this functionality was implemented after 3.5.7 release, so you need recent libtiff software from CVS or latest beta release.

Andrey V. Kiselev
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