RDF for the last steps

Dear All users
I want to plot RDF. Since the simulation time is 10 nanoseconds. File size RDF is so much. as I just need the last step. How can i run it to save rdf data just for 100 last step ?

Dear All users
I want to plot RDF. Since the simulation time is 10 nanoseconds. File size
RDF is so much. as I just need the last step. How can i run it to save rdf
data just for 100 last step ?

that is a bad idea. the structural information of adjacent time steps
is highly correlated, so your RDF is going to be mostly useless this
way.
it would be much better to increase the spacing between the steps your
retain. they should be _at least_ 1ps apart.

also, it is recommended to only same analysis data over the
equilibrated parts of a trajectory. so you should split your
simulation in parts and only collect RDF information when you are
certain, that your system is well(!) equilibrated.

finally, you can just average over many more steps before writing out
a single averaged data set.

all three of these steps will significantly reduce the amount of data
that is being generated. if you record your trajectory with reasonable
resolution, you can always re-do the RDF calculation via the rerun
command.

axel.

just make the

you can use the last lines of your file by this command:
tail -n 1000(or whatever) tmp.rdf | cat >newfile

Best,