Huh. Right. Yay for having made the math overly complicated. I guess I still don't get the white lines, in large part because they never show up on my massgis data. http://maps.massgis.state.ma.us/mhc/examples/gmap3wms_example2.html
Perhaps it's due to the different backends? (geoserver + arcsde vs arcims +?) Maybe arcims isn't handling reprojecting the imagery to spherical properly that its adding the white space onto the tiles? As you zoom in to say, zoom level 12 or so, those white bars get rather wide. (try looking @ *map.setCenter( new google.maps.LatLng(55.77587839343693,-67.76026580078124));* *map.setZoom(12);* on either of our NOAA maps.) On Thu, May 27, 2010 at 3:31 PM, William <[email protected]> wrote: > On May 28, 2:30 am, Josh Rosenthal <[email protected]> wrote: > > Using > > the NOAA data results in some strange problems with the overlays having > > white lines around tiles or pairs of tiles. I'll post asking about it in > a > > separate thread, but if anyone has thoughts as to what could cause > that/how > > to fix it, I'd love to hear them. > > > Your map looks great! I think the white lines are something to do > with rounding of coordinates, because there's less of the white lines > when you use whole integers for the mercator coordinates. > > the google tile system is already a mercator projection, so the > transform from the tile coordinates to the world mercator coordinates > is a linear transformation: > > http://www.william-map.com/20100526/2/tile.htm > > ... > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps JavaScript API v3" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-maps-js-api-v3%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-maps-js-api-v3?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
