Hello I used this command to create GMT map. r.out.bin -h input=elv1 output=el2.grd. But GMT's grdinfo command gives $ grdinfo el2.grd grdinfo: Not a netCDF file [el2.grd] How can I produce GMT compatible grid file? regards -- Ahmet Temiz -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.