On 07/05/2018 10:19 AM, Andreas Neumann wrote: > Hi Nyall, > > Thanks for your thoughts. > > And how about going through GDAL/OGR and exporting vector layers twice? > One time as raster with styling preserved, and a second time as > invisible vector overlays (e.g. fully transparent but still queryable > (attributes preserved))? > > My fear with upstream qt is, that: > > * qt is not geo-aware, but GeoPDFs need to preserve > georeferencing/coordinate system information. Upstream qt may or may > not accept "geo"-improvements to their PDF support. There is a risk > they deny such improvements. > * it may be expensive to implement, if we would have to improve qt > * it may be slow to get it into qt
Hi Andreas, I always thought geopdf was a proprietary format? I googled: https://en.wikipedia.org/wiki/GeoPDF vs https://en.wikipedia.org/wiki/Geospatial_PDF Latter an iso spec implemented by several different companies. I tend to agree that a Qt-path will be cumbersome. But I think (even a limited) form of generating Geospatial PDF's would be a very 'nice to have' in QGIS. The ideas off course would be that styling would stay the same, but agreeing with Nyall: mapping those styling from our world to pdf world is a (too) big task I think. Not sure if is possible to integrate the gdal-frmt_pdf more into QGIS? Or: put money/energy in the gdal driver so it can handle for example sld-styling rules per layer? In that way the driver could be usefull for other GFOSS projects (like mapserver etc) too? Mmm, from http://www.gdal.org/frmt_pdf.html You need gdal build with special (pdf)libs, gdal is not build by default with those... @nyall: would it be possible to create a (transparent) raster per layer and use those for (Qt) pdf's? In that way a QGIS user would be able to create multiple 'layers' in a pdf? Regards, Richard Duivenvoorde _______________________________________________ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
