Hi, I'm attempting to produce a bgl for Malta from SRTM data, but unfortunately no files for the adiacent tiles are available (with good reasons I reckon, as the areas cover stretches of bare sea). SRTM_to_BGL requires alas two adiacent tiles: how to, then? Is there a way to empty an existing tile for another area and then rename it, or...?Giorgio

Hi Giorgio,If X represents Cells with data and 0 represents Cells for which you have no data, you can merge 2 non adjacent cells to get, say, a 3x1 rectangle like:X0Xor, if the 2 Cells are quite apart, say, a 4x3 rectangle like:X0000000000X or whatever. Please get DEM2BSQ (no help, no docs) at:http://www.ptsim.com/en/support.htmRegards, Luis

So it's possible.Thanks for the technical and concise answer,regards,Giorgio

I've merged the data, and as far as the program shows everything is at the right place...but now how can I produce a bgl from the bsq file?Giorgio

Lu