Please excuse my newbiness. I have been reading documentation left, right and centre and I may be missing something but I can't find an obvious way to do this.
I have a set of high resolution digital maps (currently a matrix of about 200x400, each at 1280x1024 resolution). They are saved as GIF files, though that could be changed, and I know their centre and edge positions in terms of Lat/Long to a negligible error. These data are stored in a tab-delimited text file. The map fragments are in a transverse mercator projection though not UTM. They are plain image files with no geographic data geocoded into the format. What I want to do is to import them automatically via shell-scripted commands to a Grass raster layer(s?) in order to cover the region over which they spread, so that within grass I can work with it as a contiguous area. I have found information about importing scanned maps with graphical picking of corners but this is both far too time consuming and unnecessary for what I am attempting (the maps are 'square', not scanned, and I can provide their edge positions automatically). I have also found some indications that each raster image has to end up as its own layer... how does this work with groups, large numbers of map fragments etc? Do I have to join the raster images within Grass or can they be kept separate? If someone could point me in the right direction in terms of which commands I need to use and whether this is possible, I'd be very grateful. I'm really looking forward to getting this lot into Grass so that I can start working with it and learning more! Many many thanks in advance, Adrian _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
