Display powers of 2 on the axis with gnuplot

Question

I am trying to use gnuplot to plot results from my experiments.

I wrote a C++ program that generates a datafile that looks like this:

10   3.5
11            


        

Answer 1

this is done relatively easy by manipulating the using specification:

plot datafile using (2**$1):2

If you do this, you'll probably also want a

set logscale x 2
set format x '2^{%L}'  #<- enhanced text.

to make the plot look nicer.