One thing I did notice is that my EPSG file definition for "Spherical Mercator" is missing a parameter, "[EMAIL PROTECTED]". I'll test tomorrow to see if adding it to the definition removes the problem. --
On Sat, Oct 18, 2008 at 7:25 PM, Roger André <[EMAIL PROTECTED]> wrote: > This is probably more of a TileCache question, than a MapServer one, but I > figure one of you may have had the same issue in the past. I'm using > MapServer to feed TileCache a fairly large GeoTiff with global extents, > which I'm then displaying in Google Maps as a tile layer. This has worked > well in the past, but now I'm encountering a weird problem. Some of my > tiles are being rendered by MapServer with a row of pixels missing on the > bottom of the image. So for example, in Zoom Level 2, all of the 0.png > tiles will be 256 x 256 pixels, but row 256 will not contain data from my > global image, but instead will be set entirely to whatever background color > I have set in my Mapfile. The problem appears in multiple, but not all, Zoom > levels, and at different geographic locations, but always at the bottom row > of a tile. > > The source image doesn't have the lines in then, so I have to believe that > the "dead" row is an artifact of the rendering process. My seed image is in > lat/lon WGS84, and the tiles are being requested in EPSG:900913. The > reprojection seems to be working correctly, insofar as image lineup with > Google Maps seems to indicate. If I take the seed image and create a very > reduced resolution version of it, then run it through TileCache, I don't get > any lines. So it seems like the lines *might* be a result of downsampling, > but since they're not present at the bottom of every image, I'm not > convinced that's the problem. > > Oh, and I'm using the GD driver. > > Any ideas? > > Roger > -- >
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