#!/usr/local/bin/gnuplot -persist
# set terminal canvas  rounded size 600,400 enhanced fsize 10 lw 1.6 fontscale 1 name "world_4" jsdir "."
# set output 'world.4.js'
set dummy u, v
set angles degrees
unset key
set parametric
set view 70, 40, 0.8, 1.2
set view  equal xy
set samples 32, 32
set isosamples 13, 13
set mapping cylindrical
set hidden3d back offset 0 trianglepattern 3 undefined 1 altdiagonal bentover
set xzeroaxis
set yzeroaxis
set xyplane at -110
set ztics  norangelimit 30
set title "3D version using cylindrical coordinate system" 
set urange [ -180.000 : 180.000 ] noreverse nowriteback
set vrange [ -90.0000 : 90.0000 ] noreverse nowriteback
set xrange [ * : * ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ -90.0000 : 90.0000 ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
## Last datafile plotted: "world.cor"
splot cos(u),sin(u),v with lines lc rgb "cyan" ,'world.dat' with lines lc rgb "blue" lw 2, 'world.cor' with points lt 1 pt 2