# set terminal pbm large color # set output "| ppmtogif > drift.gif" PI2=6.28 Elev(ang) = (90-ang) Azimuth(ang) = (PI2*(-(ang-90)/360)) set title "GPS Satellites from 37 26' North" set grid lw 2 set border lw 2 set polar set grid polar set size square unset raxis unset rtics plot \ "PRN-01.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 01" with points lt 1, \ "PRN-02.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 02" with points lt 2, \ "PRN-03.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 03" with points lt 3, \ "PRN-05.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 05" with points lt 4, \ "PRN-06.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 06" with points lt 6, \ "PRN-07.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 07" with points lt 7, \ "PRN-08.log" \ using (Azimuth($5)):(Elev($4)) \ title "PRN 08" with points lt 8