# sirka bunky histogramu
binwidth = 4

# pocatek histogramu
binstart = -2

# format sloupcu a jejich strida
set boxwidth 0.9*binwidth
set style fill solid 0.5

# definice makra
hist = 'u (binwidth*(floor(($1-binstart)/binwidth)+0.5)+binstart):(1.0) smooth freq w boxes'

# priklad pouziti makra
plot 'data.txt' @hist ls 1