Many thanks for your answers!!!<div><br></div><div>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?</div>
<div> </div><div>Is it posible to include this tag in a TIFF (not geoTIFF) file not using gdal library? Or I have to use geotiff? </div><div><br></div><div><br></div><div>Best regards,</div><div><br></div><div><br></div><div>
Jorge </div><div><br><div class="gmail_quote">2011/5/17 Frank Warmerdam <span dir="ltr"><<a href="mailto:warmerdam@pobox.com">warmerdam@pobox.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 11-05-17 07:54 AM, Jorge Martin wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello Frank,<br>
<br>
<br>
I am reading libtiff manual and it is possible to write different IFD<br>
(directories, I do not know the correct word) in the same tiff file using<br>
*TIFFWriteDirectory *function. Is it possible to use it in gdal library?<br>
</blockquote>
<br>
<br></div>
Jorge,<br>
<br>
While in theory we could extend the GDAL library to write multi-image<br>
TIFF files - at this time we do not have support for doing this.<br>
<br>
Best regards,<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
2011/5/17 Jorge Martin <<a href="mailto:jormarfe@gmail.com" target="_blank">jormarfe@gmail.com</a> <mailto:<a href="mailto:jormarfe@gmail.com" target="_blank">jormarfe@gmail.com</a>>><div class="im"><br>
<br>
Hello Frank,<br>
<br>
TIFF 6.0 specifications has a sub-section in page 16 which is<br>
called "Multiple Image per TIFF file" and there is only a description of<br>
this issue but anything about its implementation:<br>
<br>
"There may be more than one IFD in a TIFF file. Each IFD defines a subfile.<br>
One potential use of subfiles is to describe related images, such as the<br>
pages of a facsimile transmission. A Baseline TIFF reader is not required<br>
to read any IFDs beyond the first one."<br>
<br>
Is it possible to implement it?<br>
</div></blockquote>
<br>
<br><div><div></div><div class="h5">
<br>
-- <br>
---------------------------------------+--------------------------------------<br>
I set the clouds in motion - turn up | Frank Warmerdam, <a href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a><br>
light and sound - activate the windows | <a href="http://pobox.com/~warmerdam" target="_blank">http://pobox.com/~warmerdam</a><br>
and watch the world go round - Rush | Geospatial Programmer for Rent<br>
<br>
</div></div></blockquote></div><br></div>