Hi all ns users and Qiming, I tried ff the instructn they gave in the tutorial on how to go about that and this is what I got; input Number of Groups: 1 input Number of Node per group: 5 input the Speed Deviation: 0 input the Angle Deviation (in degree): 0 input the Filename of the original trace files: please input the reference point trace filename of 1th group leader: g1-1.ch input the Filename of the Trace Output File: But I dont know the name of the trace output file. I inputed a file name with a .ch ext but I got an error telling me that the file cud not be found. Plsssss all ns users do help me with ur solns if u have encountered this prob b4. thanks Thank u. --- On Tue, 13/7/10, Qiming Li <liqim...@gmail.com> wrote: From: Qiming Li <liqim...@gmail.com> Subject: Re: Generating mobility scenarios for RPGM an Gauss Markov To: "ikenna ajere" <ajer...@yahoo.co.uk> Date: Tuesday, 13 July, 2010, 18:49 Hi Ikenna, I have not been maintaining the code for quite a long time. But if I remember correctly, the name for Gauss Markov model is "Gauss-Markov". As for RPGM, well, every group in scen-spec has a "center" point by default. The nodes in each group moves around their center. So all you need is just to specify a model for the center point. I believe some of the examples in scen/ directory use that. BTW, I think you got my name wrong :-) Qiming On Wed, Jul 14, 2010 at 1:24 AM, ikenna ajere <ajer...@yahoo.co.uk> wrote: Hello Ling, Thanks for your nice work for ns2 users. I want to generate a tcl script that has 3 mobility scenarios - waypoint, Gauss Markov and RPGM. I can generate for waypoint bt do not fully understand how to generate for the other 2. I have their scengen folder containing the .h and .cc extension files but dont know the one to modify and how to run them. Thanks Ikenna