x-axis value on gnuplot

Question

I am playing around with gnuplot.My data set looks like this.

1     0.530000  0.510000
2     0.420000  0.310000
4     0.400000  0.160000
8     0.390000  0.07         


        

Answer 1

Instead of calling:

plot "time_mem_access.dat" using 1:2 title "cache access 1", \
      ""                   using 1:3 title "cache access 2"

You can try:

plot "time_mem_access.dat" using 1:2:xtic(1) title "cache access 1", \
      ""                   using 1:3:xtic(1) title "cache access 2"

Which will give you the following plot:

However you might want to take a log of the x values:

plot "time_mem_access.dat" using (log($1)):2:xtic(1) title "cache access 1", \
      ""                   using (log($1)):3:xtic(1) title "cache access 2"

Which would give you: