gnuplot /gallery / cal6

• calculated 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 screen 0.60, screen 0.65
set pointsize 0.6
set tmargin 1

set mxtics  5
set mytics  5
set xtics  10
set ytics  10

set xrange [ 0 : 50 ]
set yrange [ 0 : 50 ]

set xlabel "Energy [keV]"
set ylabel "Energy [keV]"

set linestyle 1 lt 1 lw 1
set linestyle 2 lt 2 lw 1
set linestyle 3 lt 3 lw 1
set linestyle 4 lt 4 lw 1 pt 4
set linestyle 5 lt 5 lw 1 pt 5
set linestyle 6 lt 6 lw 1 pt 6
set linestyle 7 lt 7 lw 1 pt 7

set output "covar.eps"
plot "covar.tbl" i 0:0  u 1:2  ti "1000"  w l ls 1, 
"covar.tbl" i 1:1  u 1:2  ti "800"   w l ls 2, 
"covar.tbl" i 2:2  u 1:2  ti "600"   w l ls 3, 
"covar.tbl" i 3:3  u 1:2  ti "400"   w l ls 4, 
"covar.tbl" i 4:4  u 1:2  ti "200"   w l ls 5, 
"covar.tbl" i 5:5  u 1:2  ti "0"     w l ls 6, 
"covar.tbl" i 6:6  u 1:2  ti "-200"  w lp ls 7, 
"covar.tbl" i 7:7  u 1:2  ti "-400"  w lp ls 6, 
"covar.tbl" i 8:8  u 1:2  ti "-600"  w lp ls 5, 
"covar.tbl" i 9:9  u 1:2  ti "-800"  w lp ls 4

pause -1