set terminal png
set output "fig_sample_polar.png"
set title "Polar test"
set key outside right bottom
unset border
set polar
set angles degree
set size square
set grid polar 15
set samples 34
#
set xzeroaxis linetype 0 linewidth 1.000
set yzeroaxis linetype 0 linewidth 1.000
#
set xtics axis in scale 1,0.5 nomirror norotate  offset character 0, 0, 0 autofreq 
set ytics axis in scale 1,0.5 nomirror norotate  offset character 0, 0, 0 autofreq 
set trange [0:330]
set rrange [-50:60]
plot 0,50,60,sin(t)*50, \
"-" with points pointtype 9 pointsize 2
200 40
210 45
220 55
230 45
240 40
250 35
260 25
270 15
280 5
250 3
290 -10
e
#pause -1