gnuplot /gallery / cal6calculated data set term table set xrange [0. : 50 ] set yrange [0. : 50 ] set zrange [-500 : 1000 ] set xtics 10 set ytics 10 set mxtics 2 set mytics 2 set nosurface set cont set view 0,0 set ticslevel 0 set cntrparam levels auto 10 set output "covar.tbl" splot "covar.dat" u ($1/10):($2/10):3 notitle w line set term postscript eps enhanced color solid set size sq 0.7,0.7 set zero 1e-20 set key s
