On Tue, Apr 5, 2011 at 8:51 AM, Paolo Cavallini <[email protected]> wrote: > Il giorno mar, 05/04/2011 alle 09.23 +0200, Tim Sutton ha scritto: > >> The pieces for such functionality are coming together and I think it >> wont be long before we have a robust catalogue tool for QGIS. > > Great news. Could you please let us know more about the project? Which > metadata standard will the catalogue use? > All the best.
I don't see why a catalog index would use a particular standard, it would just enable searches in the metadata held by data sources according to the standards they may be using. So for a GDAL dataset, it would just call g.GetMetadata_List() (I think) and stash the returned text in its db. This would then be indexed and searchable. The catalog tool itself is then neutral about metadata schema. I guess if the layer presents a well-known metadata scheme then it can do what Voyager does: http://voyagergis.com/doc/current/Show%20Metadata I think its too much of a task to expect a catalog tool to collate all possible layers metadata into a single schema, although it could expose a summary metadata of the simple stuff like extent, projection etc for the layers in the catalog. I was thinking a catalog database could be a spatialite database, with each layer a rectangular polygon, easily enabling spatial and non-spatial searches... Barry _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
