[gdal-dev] TIFF with different KEYS_DS

[Jorge Martin]

Many thanks for your answers!!!

Now I am developing a library that handles TIFF and geoTIFF, but I have
noted that I need to include RPCCoefficientTag to the TIFF file. Searching
on the internet I have found that this tag is not suported by geoTIFF spec
1.0, it is only suported by gdal. Is this true?

Is it posible to include this tag in a TIFF (not geoTIFF) file not using
gdal library? Or I have to use geotiff?


Best regards,


Jorge

2011/5/17 Frank Warmerdam <warmerdam at pobox.com>

> On 11-05-17 07:54 AM, Jorge Martin wrote:
>
>> Hello Frank,
>>
>>
>> I am reading libtiff manual and it is possible to write different IFD
>> (directories, I do not know the correct word) in the same tiff file using
>> *TIFFWriteDirectory *function. Is it possible to use it in gdal library?
>>
>
>
> Jorge,
>
> While in theory we could extend the GDAL library to write multi-image
> TIFF files - at this time we do not have support for doing this.
>
> Best regards,
>
>  2011/5/17 Jorge Martin <jormarfe at gmail.com <mailto:jormarfe at gmail.com>>
>>
>>
>>    Hello Frank,
>>
>>             TIFF 6.0 specifications has a sub-section in page 16 which is
>>    called "Multiple Image per TIFF file" and there is only a description
>> of
>>    this issue but anything about its implementation:
>>
>>    "There may be more than one IFD in a TIFF file. Each IFD defines a
>> subfile.
>>    One potential use of subfiles is to describe related images, such as
>> the
>>    pages of a facsimile transmission. A Baseline TIFF reader is not
>> required
>>    to read any IFDs beyond the first one."
>>
>>             Is it possible to implement it?
>>
>
>
>
> --
>
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/gdal-dev/attachments/20110524/2eaf3100/attachment.html