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January 2004

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2004.01.20 15:40 "Reading Custom Tags", by David Christopher Asher

2004.01.20 17:14 "Re: Reading Custom Tags", by Frank Warmerdam

2004.01.20 20:10 "Re: Reading Custom Tags", by Antonio Scuri

2004.01.20 20:46 "Re: Reading Custom Tags", by David Christopher Asher

2004.01.23 22:14 "Re: Reading Custom Tags", by Pushkar Pradhan

2004.01.24 00:50 "Re: Reading Custom Tags", by Antonio Scuri

2004.01.20 15:40 "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