On 25-08-16 17:10, felipe castro wrote: > I would appreciate some ideas here. > > I have the need of creating thousands of maps with based on the same CRS but > with changes in latitude_of_origin and central_meridian and, for that > matter,I do the following: > > - Take a base CRS definition in WKT form. > - Set the parameters I need. > - Create the CRS using using CRS.parseWKT. > > The whole process is like this: > > - Get the new latitude_of_origin and central_meridian. > - Create a new CRS using the method described above. > - Create a new MapContent and set the target CRS with the one I just > created. > - Add shape layers. > - Build a final image using StreamingRenderer. > > Performance wise, the above process gives excellent results when using the > same target CRS for every request. > > However, when changing the CRS for each new set of coordinates the rendering > process takes longer and longer until after 40,000 transformations it is > taking about 10 times the time it was taking originally per rendering. > > It makes me think that some problem accumulates when switching CRSs or maybe > my workflow is all wrong.
You should profile your application to see what happens to your memory, i'm guessing you're not cleaning up the old mapcontent objects Mark ------------------------------------------------------------------------------ _______________________________________________ GeoTools-GT2-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
