User:Dtumpic

Graph Testing #1

This uses the gnuplot extension: http://meta.wikimedia.org/wiki/Gnuplot

<gnuplot>
set output 'func_approx.png'
 plot '-' using 1:2 t 'quadratic approximation' with linesp lt 1 lw 3, \
 '-' using 1:2 t 'cubic approximation' with linesp lt 2 lw 3
 1 2
 2 4
 3 8
 4 16
 e
 1 3
 2 9
 3 27
 4 81
 e
</gnuplot>