sadrand-c/plot3d.gp

#!/usr/bin/gnuplot -p
splot \
 "/tmp/rnd3d.dat" using 1:2:3 w p lt rgb "green" t "std-rand" \
,"/tmp/rnd3d.dat" using 1:2:4 w p lt rgb "blue" t "mod-rand" \
,"/tmp/rnd3d.dat" using 1:2:5 w p lt rgb "red" t "prop-rand"