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October 2005
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2005.10.26 15:30 "Re: Why Xresolution, Yresolution, ResolutionUnit coudn't be changed?", by Frank Warmerdam
On 10/26/05, ϋΕΒΕΛΟ εΧΗΕΞΙΚ <shebeko@mail.ru> wrote: > Why Xresolution,Yresolution,ResolutionUnit coudn't be changed? > > In tag description tags marked as couldn't be changed after write. > Why not? > As I understand this parameters don't take a part in libtiff > calculations and do not influence to the file consistency. > So why it's could not be changed to other values? > > It is a real situation while a resolution coudn't be detected during > creating the image. But it could be corrected by user for example. > > Of course I made changes for myself in tag descriptions. > > If there is no reason not to do this, it will be fine if this tag > description will be changed in the next libtiff release. Eugene, I can't think of any reason why these tags should be immutable in the way that tags like image width and image height are. I would suggest you submit a bug report through bugzilla on this issue. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent