#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'polar_quadrants.1.png'
unset border
set dummy t, y
set ttics format "%g°"
set grid polar 0.523599
set grid noxtics nomxtics noytics nomytics noztics nomztics rtics nomrtics \
 nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid layerdefault   lt black linewidth 0.300 dashtype solid,  lt black linewidth 0.300 dashtype solid
set raxis
unset key
set polar
set size ratio 1 1,1
set style data lines
set mttics 3.000000
unset xtics
set ytics axis in scale 0.5,0.25 mirror norotate  offset character -1, 0, 0 autojustify
set ytics  norangelimit 2
set ztics border in scale 0.5,0.25 nomirror norotate  autojustify
set cbtics border in scale 0.5,0.25 mirror norotate  autojustify
set rtics axis in scale 0.5,0.25 nomirror norotate  offset character 0, 2, 0 autojustify
set ttics axis in scale 1,0.5 nomirror norotate  autojustify
set ttics  norangelimit 0.00000,30 font ":Italic"
set xrange [ 0.00000 : 6.50000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ -6.50000 : 0.00000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ 0.00000 : 6.10000 ] noreverse nowriteback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
NO_ANIMATION = 1
plot t lt 3 lw 2, -t lt 4 lw 2