LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
January 2005
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2005.01.21 15:14 "Re: deleting tags!", by Frank Warmerdam
On Thu, 20 Jan 2005 21:08:13 +0100, Antoine <melser.anton@gmail.com> wrote: > I have had a really frustrating day trying to work out how to delete > tags from a tiff header. Can anyone help me here? I am truly zero at c > and am having a real 'mare trying to get anywhere. I have got as far as > seeing that there is nothing special pupose for it in libtiff, so there > is probably some way of doing it by undefining the tag. Any pointers? Antione, I'm not aware of any way of clearing a tag completely from the directory either. In fact, "in place" update of a TIFF file on disk is still a relatively experimental area. In the past before in-place update there was never a compelling need to delete tags from an in memory directory since you could update a file on disk (other than appending new images). If you really need to do this for some specific purpose (and a specific tag), I'm sure we could help you with a hack going around the public interface. The more conventional approach though is to copy the file you want to change to a new file, and just avoid copying anything you don't want in the new file. 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