The basic MakeTiles workspace is below. The first step is to force the image to RGBA, which will make any NoData areas created by the Reprojector be transparent. The WebMapTiler requires the source data to be in the SPHERICAL_MERCATOR coordinate system, so the image is sent to the Reprojector, and then to the WebMapTiler.
The Maximum Zoom Level should be set to a value corresponding to the source image resolution, using the resolution table that can be found on the Bing Maps Tile System page. The Minimum Zoom Level will depend on the size of the source image, but a good way to pick the value is to divide the width of the image by 100, then look up the zoom level corresponding to that resolution.
SQL Server stores images in a blob column rather than as the feature geometry, so we must next use a RasterExtractor to extract the raster into an attribute. The Raster Format should be able to support RGBA rasters, so PNG is a good choice.
select Quadkey from TileCache group by Quadkey having count(*) > 1
@FMEEvangelist Good post on caching. I wonder how much storage space is needed?
org_size + 0.25 * org_size + .0625 * org_size + 0.015625 * org_size...etc.
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