It says no slices were created, make sure thesource is large enough to cover a LOD 13.What size should my .BMP image be?

it depends on your value for cellxdim and cellydim. lod13 grid is about .015degrees of longitude and .01 degrees of latitude. You want to have at least about 4 times that much coverage in your photo so that there is plenty of overhang, assuring at least 2 completely filled lod13 cells get presented to resample.exe.Cellxdim and cellydim are scaling factors, they're units are degrees/pixel.Find your coverage in degrees, compare that to the pixels used for that distance in your image...now you have your value for cellxdim, and cellydim.Runways work well for that calculation, as you can find the degrees long and lat at each end, and its easy to measure the pixel count in your image...hope that helps.Bob Bernstein

Yep, that sure sounds like it will help :)Thank's Bob.....I'll see how I get on.cheers