name = "course0"
rddf = "0.rddf"
obs  = "0.obs"
##
## Parameters of the ERTS test field
##
test_field_center_lon = -86.522
test_field_center_lat = 39.182118
lat_to_m(l) = 111122.1976990337 * (l - test_field_center_lat)
lon_to_m(l) = 86357.7330619772 * (l - test_field_center_lon)
##
## Remove the next two lines to display the plot in a window
##
set term png small
set output sprintf("%s.png", name)

set title name
##
## Plot the waypoints, LOBs and corridor medians
##
plot\
  rddf every  1 using (lon_to_m($3)):(lat_to_m($2))  with points pt 1 lt 1 ps variable lc rgb "green" title 'WayPt',\
  rddf every  1 using (lon_to_m($3)):(lat_to_m($2)):5 with points lt 1 pt 6 ps variable lc rgb "green"   title 'LOB',\
  rddf every  1 using (lon_to_m($3)):(lat_to_m($2)) with lines lc rgb "green" title 'path',\
  rddf every  1 using (lon_to_m($3)+2):(lat_to_m($2)+2):1 with labels title '',\
  obs  every  1 using (lon_to_m($3)):(lat_to_m($2)):(5*$4)   with points lt 1 pt 9 ps variable lc rgb "orange"  title 'obstacles'