gnuplot: max and min values in a range

Question

I\'m plotting some data with a different X range and I would like to change yrange according to the maximum and minimum value of the data in the current X range. When I use

Answer 1

I use it like this to define an x range for a funcion

plot [0:5] sin(10*x) + cos(3*x)

Also, you can set the range before ploting

set xrange [0:5]
plot sin(10*x) + cos(3*x)