set term pdf enhanced color font "helvetica,20" linewidth 1 size 10,6
set output "cf_map.pdf"

set view map
set size square
set samples 50, 50
set isosamples 400,400
unset surface
set style data lines

set contour base
set cntrparam bspline
set cntrparam levels incremental 0.1,0.2,0.3
#set cntrparam levels auto
set table 'cont.dat'
splot "./cf_signal.txt" using 1:2:3
unset table
load '<./contour_norotate.sh cont.dat 0 1 0 > ./labels.txt; ./contour_norotate.sh cont.dat 1 15 4 > ./contours.txt'

reset
unset key
unset surface
set contour base
set title "Contribution function" 
set xlabel "{/Symbol n} (cm^{-1})"
set ylabel "Altitude (km)"
load "./labels.txt"
p './contours.txt' w l lt -1 lw 0.5

quit
