Hi users
I use fix ave/correlate in my input file like below:

variable ave atom vx

fix 4 all ave/correlate 1 100 1000 v_ave file VAC.txt
and now I want to draw my data in VAC.txt
may I ask u help me how do it

The file format is explained on the ave/correlate manual page. To do the actual plotting, use something like xmgrace, gnuplot, or pyplot.