Hi Michael, Thanks very much for the reply. In one dataset the pixels are variable-sized with corner coords specified. Some of them overlap (as the instrument scans back and forth). In the other dataset I only have centre coords, and I can't seem to find any info about the nominal pixel size... So I'm focussing on the first dataset for the moment, until I find out more about the second.
I can probably figure out how to do this using java2d without geotools, but I was wondering if there's a simple method I can use to save time. Any pointers you could give would be much appreciated! I'll see if I can send you the data - I'm not sure of the access rights. Cheers, Jon 2009/1/20 Michael Bedward <[email protected]>: > Hi Jon, > > I might be able to help - I've worked with polygon lattices in the past. > > What form do the data take ? For instance, variable-sized pixels with > corner coords specified or uniform-sized and slanted with centre > coords specified... No overlap ? > > Also, perhaps you could post, or email privately if you prefer, an > example of the data. > > cheers > MIchael > > 2009/1/19 Jon Blower <[email protected]>: >> Hi all, >> >> I'm looking for a way of rendering an image of some satellite data. >> Each "ground pixel" in the data is represented as a quadrilateral in >> lat-lon coordinates, and each pixel is associated with a numerical >> value (ozone concentration in this case). (I guess this is a >> DiscretePolygonCoverage in ISO19123 terminology.) Does anyone have >> any hints for how I could use GeoTools to do this? I've looked >> through the User Guide and javadocs for the latest GeoTools but am >> getting a bit lost in FeatureCollections and the Feature model. >> >> (I can of course provide a mapping between data value and pixel colour.) >> >> Thanks in advance, >> Jon >> >> -- >> Dr Jon Blower >> Technical Director, Reading e-Science Centre >> Environmental Systems Science Centre >> University of Reading >> Harry Pitt Building, 3 Earley Gate >> Reading RG6 6AL. UK >> Tel: +44 (0)118 378 5213 >> Fax: +44 (0)118 378 6413 >> [email protected] >> http://www.nerc-essc.ac.uk/People/Staff/Blower_J.htm >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by: >> SourcForge Community >> SourceForge wants to tell your story. >> http://p.sf.net/sfu/sf-spreadtheword >> _______________________________________________ >> Geotools-gt2-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >> > -- Dr Jon Blower Technical Director, Reading e-Science Centre Environmental Systems Science Centre University of Reading Harry Pitt Building, 3 Earley Gate Reading RG6 6AL. UK Tel: +44 (0)118 378 5213 Fax: +44 (0)118 378 6413 [email protected] http://www.nerc-essc.ac.uk/People/Staff/Blower_J.htm ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
