[gdal-dev] How to add georeferencing tags to a .tif?

[Greg Coats]

I have one .tif that has tag 700 XMP metadata, and has a tag 33723  
IPTC metadata, but does not have tags 33550, 33922, 34264, 34735,  
34736, 34737 georeferencing metadata. I have a second .tif that has  
does not have tag 700 XMP metadata, nor does it have tag 33723 IPTC  
metadata, but it does have 33550, 33922, 34264, 34735, 34736, 34737  
georeferencing metadata. I want to add the tags that provide  
georeferencing metadata in the second .tif, to the first .tif. As  
shown below, I first tried using geotifcp, and then tried  
gdal_translate, but while the resulting .tif does have the  
georeferencing tags it originally lacked, the resulting .tif is  
without the tag 700 XMP metadata, and without the tag 33723 IPTC  
metadata that it originally had. How can georeferencing tags be added  
to a .tif, withOUT removing preexisting tag 700 XMP metadata, and  
withOUT removing preexisting tag IPTC 33723 metadata?
listgeo 18stj940125.tif > 18stj940125_listgeo.txt
geotifcp -s -r 1 -c none -f msb2lsb -g 18stj940125_listgeo.txt  
tif_withXMP700_withIPTC33723_withoutGeo.tif  
tif_withXMP700_withIPTC33723_withGeo.tif
Greg
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