set title "world.dat plotted with filledcurves"
set format x ""
set format y ""
set grid layerdefault linewidth 0.5 
set object  1 rect from graph 0, 0 to graph 1, 1 behind fc  rgb "#afffff" fillstyle solid 1.00 border -1
set xrange [ -180.000 : 180.000 ]
set yrange [ -70.0000 : 80.0000 ]
set lmargin  1
plot 'world.dat' with filledcurve notitle fs solid 1.0 lc rgb 'dark-goldenrod'