Color bars in different colors for some specific values in Gnuplot

Question

I\'m using Gnuplot to generate a histogram but I need to color some of them in another color if the value are over/under a specific value. Eg if value < 10, color the spe

Answer 1

Given this datafile:

1 4  green
2 15 yellow
3 40 red

The following line works:

plot for [color in "green red yellow"] 'test.dat' using 1:(strcol(3) eq color ? $2:NaN):(0.95) with boxes lc rgb color