# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
# set output 'fit.2.png'
set key bmargin center horizontal Right noreverse enhanced autotitles nobox
set title "data for first fit demo" 
set xlabel "Temperature T  [deg Cels.]" 
set ylabel "Density [g/cm3]" 
l(x) = y0 + m*x
y0 = 0.0
m = 0.0
GPFUN_l = "l(x) = y0 + m*x"
plot 'lcdemo.dat'