AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2004.01.20 18:40 "[Tiff] Reading Custom Tags", by David Christopher Asher
2004.01.20 17:14 "Re: [Tiff] Reading Custom Tags", by Frank Warmerdam
2004.01.20 20:10 "Re: [Tiff] Reading Custom Tags", by Antonio Scuri
2004.01.20 20:46 "Re: [Tiff] Reading Custom Tags", by David Christopher Asher
2004.01.23 22:14 "RE: [Tiff] Reading Custom Tags", by Pushkar Pradhan
2004.01.24 00:50 "Re: [Tiff] Reading Custom Tags", by Antonio Scuri

2004.01.20 18:40 "[Tiff] Reading Custom Tags", by David Christopher Asher

Hello,

I am having sime trouble reading custom tags from a TIFF file. The tags are two GeoTIFF tags, (33550 and 33922), which hold 3 doubles and 6 doubles respectively. I have found very little documentation on custom tags online, apart from the 3.6.0 spec notes page, which would seem to indicate you read them more or less like standard tags like TIFFTAG_IMAGEWIDTH.

So, I use something like:

    ...
    double x,y,z;
    TIFFGetField(tiff,33550,&x,&y,&z);
    ...

I am using version 3.6.0 of the library. Any help is appreciated!

--
Dave