Hi, Does anyone have the _exact_ proj4js definition for ESRI projections EPSG:102100 and the older EPSG:102113?
My maps have a y-coordinate shift (both north and south at different zooms) off by many map pixels. Always close, but no cigar. X-coordinate is always dead on. I can add in ArcGIS online content as dynamic layer without any problems. But when adding cached tiles, there's always this shift. Has anyone seen this before and/or been able to resolve it? I need to be able to use the cached tiles. I've used the one from spatialreference.org, as well as set it directly to be equal to Google's EPSG:900913 but there's always a shift. I've tried many different variations with +a and +rf and others but I feel like the definition is missing a +towgs84=... adjustment to properly correct for the shift on the map but I have no way of knowing what those parameters should be and whether it should be the 3-parameter adjustment or the 7-parameter one. Here's my current definition: Proj4js.defs["EPSG:102100"] = "+proj=merc +lon_0=0 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +units=m +nadgri...@null"; +towgs84=0,0,0,0,0,0,0 doesn't help, but I feel like the right values in there will fix the problem. Thank you, -Vadim -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/ArcGIS-Online-Cached-tiles-datum-shift-tp5314596p5314596.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
