> > you might be able to achieve that using "plugin layers" which are map > layers that can be created and updated by plugins >
What do you mean Etienne? How can I serve a layer, dynamically, through a python plugin? I don't want to have a plugin that creates a memory layer, but that gets queried on every pan/zoom/etc to retrieve the update data. giovanni > > > The other is having the possibility to bridge, easily, any kind of data > > source, using python as an adapter. > > > > giovanni > > > > > > > > > > 2012/8/29 Barry Rowlingson <[email protected]> > >> > >> I have a vague memory that the python data provider idea was > >> considered a while ago. I was thinking about how one could get direct > >> access from Qgis to R spatial data sets stored in R's binary files. > >> One method would have been to write a provider in python that used Rpy > >> to bridge to R, but wasn't possible because you can't write data > >> providers in Python. It could be done in C by linking to R's C > >> library, but at that point I lost interest and used a looser coupling > >> to get my R data into Qgis. > >> > >> The argument then went that if the provider was designed to access a > >> file it would be a better idea to write a GDAL/OGR driver, then even > >> people outside QGIS could use it. Obviously that would have to be > >> C/C++ though. > >> > >> And then I think everyone got bored and went back to doing things. > >> > >> Do you have a specific use-case? > >> > >> On Wed, Aug 29, 2012 at 8:01 AM, G. Allegri <[email protected]> wrote: > >> > Anybody interested in developing the concept and evaluating its > >> > feasibility? > >> > I'm considering the possibility to sponsor it. > >> > > >> > giovanni > >> > > >> > Sent from Nexus > >> > > >> > Il giorno 28/ago/2012 00:11, "G. Allegri" <[email protected]> ha > >> > scritto: > >> >> > >> >> AFAIK it isn't possible to register a python script as a > dataprovider. > >> >> Maybe it sounds odd, but I think it would interesting if we could > have > >> >> it. > >> >> Has it been ever considered? How hard would it be to implement it? > >> >> > >> >> Giovanni > >> >> > >> >> Sent from Nexus > > > > > > > > _______________________________________________ > > Qgis-developer mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-developer > > >
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