I have a problem When I´m trying to open ascii grid file. When I´m trying to open file, I create pyramids, as Arcmap asks. Then, when it shows as a black box, i use "conversion tools ->ASCII to raster". Then i can get something out. My problem is, how can I set right coordinates in this map? I´m trying to make a visibilityanalysis from viewshed in arcmap. So i need this ascii grid -file, because it contains hightmodels that I need. So I need to add in this file few shapefiles, but all i get is that this new map doesn´t show in same area as other shapefiles. I can see it only if I press "zoom to layer".