[gdal-dev] Re: PDF selective layer sample wanted

[Jukka Rahkonen]

Even Rouault <even.rouault <at> mines-paris.org> writes:


> 
> There's no support for generating PDF layers in the GDAL or MapServer drivers. 
> Could be perhaps be done in GDAL, but it is not obvious which GDAL concept 
> would map to a PDF layer. As far as MapServer Cairo/PDF driver is concerned, 
> this is not technically feasable (without rewriting a new MapServer backend) : 
> the PDF code is generated by Cairo and, AFAIK, Cairo PDF backend doesn't 
> support layers.

I know only one open source GIS software which creates PDF files with layers. It
is SkyJUMP by Larry Becker and I have added a sample to Geoserver feature
suggestion some time ago
http://jira.codehaus.org/browse/GEOS-3640

The jira issue has has a sample image as an attachment
http://jira.codehaus.org/secure/attachment/45741/SkyJUMP.pdf

and a comment that layers are selectable with Acrobat Reader but not with all
readers. I know that SkyJUMP is makind PDF with iText and layers are raster
layers. The image is fine and worth having a look.

-Jukka Rahkonen-