Personally, I would suggest to use GNU Plot (http://www.gnuplot.info/). It is on one hand a more feature package and on the other hand a newer and modern tool. You can find a better documentation (than xgraph) on its web.
maha lingam wrote: >dear friends, > i am mahalingam doing my final year project in ns2 . i want to >generate graphs using the tracefile with the help of *xgraph *. i don't have >much knowledge about xgraph so if you have any material reg xgraph please >send it to me.. >i will be very much thankful to you >regards >mahalingam > >