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January 2004
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2004.01.24 00:50 "Re: Reading Custom Tags", by Antonio Scuri
At 16:40 20/1/2004, David Christopher Asher wrote:
> 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!
You should upgrade to version 3.6.1 and change your code to:
double *dbl_array;
unsigned short count;
TIFFGetField(tiff,33550,&count, &dbl_array);
Best,
Antonio Scuri