set title "Gamma function: computed vs. tabulated"
set term svg
set out "Gamma.svg"
set xlabel "x"
set ylabel "y"
set xzeroaxis
set yzeroaxis
set tics out
set key bottom right
plot [:5][-5:5] \
 "table.gamma.txt" with points pt 7 \
,"out.gamma.txt" with lines title "gamma(x)"