Use bboxSR=4326 (to specify the bounding box in 4326) and imageSR=102113 to get the image back projected to Spherical Mercator.
The imageSR parameter may be called something else, but I do know that an output projection option exists somewhere. On Thu, Feb 17, 2011 at 2:09 PM, Josh Doe <[email protected]> wrote: > Ian, > I've tried various combinations of spatial references and haven't > quite got it working. I use the tileYToLat/tileXToLon functions which > give me decimal degrees in WGS84 (EPSG:4326), so I can't use > bboxSR=102113 without converting those coordinates. With the Proj4J > plugin I used EPSG:3857 (equivalent to ESRI:102113 and ESRI:102100), > and that eliminates the gaps but now there are slight shifts between > each tile, so clearly something is still awry. I thought setting > imageSR=102113 would fix the slight shifts, but then I don't get any > image returned. > > Tobias, > I've found it very confusing to understand what spherical mercator is > and the various codes involved, so much so that I created a wiki page > on EPSG:3857 [1]. > > All, > One thing that bothers me in JOSM is the Mercator projection claims to > be EPSG:3857, however it gives values in radians, not meters which > EPSG:3857 uses. I'm not even sure what EPSG/ESRI/etc identifier > corresponds to to this, but I think we should change it to avoid > confusion (took me a while to realize it was "wrong"). > > Shouldn't we change this code to avoid confusion and to "be right"? > I'm guessing people use the projection, so we shouldn't "fix" it but > rather give it the correct code if we can find it or invent one, > probably via SpatialReference.org. > > Thanks, > -Josh > > [1]: http://wiki.openstreetmap.org/wiki/EPSG:3857 > > On Thu, Feb 17, 2011 at 12:35 PM, Tobias Wendorff > <[email protected]> wrote: > > Am 17.02.2011 17:15, schrieb Ian Dees: > >> > >> Don't reproject your coordinates to Virginia, just tell ArcGIS that your > >> request bounding box is in Spherical Mercator projection by passing in a > >> projection id of 102113. > > > > Interesting information on this topic: > > http://forums.esri.com/Thread.asp?c=93&f=984&t=288073&g=1 > > > _______________________________________________ josm-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/josm-dev
