# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'polargrid.4.png'
set border 4096 front lt black linewidth 1.000 dashtype solid
set dummy t, y
set angles degrees
set tics front
set grid polar 30.000000
set grid noxtics nomxtics noytics nomytics noztics nomztics rtics nomrtics \
 nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid front   lt 0 linecolor 0 linewidth 0.500,  lt 0 linecolor 0 linewidth 0.500
set raxis
set theta clockwise top
set key title "Polar gridded surface" font ":Bold"  center
set key rmargin top vertical Right noreverse enhanced autotitle nobox
set key noinvert samplen 0.5 spacing 1 width 0 height 0
set polar
set polar grid 360, 50 gauss kdensity scale 30  theta [0:360]  r [0:*]
set view  equal xyz
set size ratio -1 1,1
set style data lines
unset xtics
unset ytics
set rtics  norangelimit logscale 
set rtics   (25.0000, 50.0000, 100.000, 200.000)
set xrange [ * : * ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rlabel "log(r)" 
set rlabel  offset character 5, 0, 0 font "" textcolor lt -1 left norotate
set rrange [ 10.0000 : * ] noreverse writeback noextend
set logscale r 10
set lmargin  5
set rmargin at screen 0.7
set palette negative nops_allcF maxcolors 0 gamma 1.5 color model RGB 
set palette cubehelix start 0.5 cycles -1.5 saturation 1
set colorbox user
set colorbox vertical origin screen 0.8, 0.2 size screen 0.04, 0.6 front  noinvert bdefault
NO_ANIMATION = 1
## Last datafile plotted: "silver.dat"
plot 'silver.dat' using 1:2:3 with surface title "gauss kdensity",      '' using 1:2:3 with points pt 7 lc "green" title "with points"