Hi for logging of the position of mobile nodes the following code will work sure..i tested it and proved
proc log-movement {} { global logtimer ns_ ns set ns $ns_ source ../mobility/timer.tcl Class LogTimer -superclass Timer LogTimer instproc timeout {} { global opt node_; for {set i 0} {$i \< $opt(nn)} {incr i} { $node_($i) log-movement } $self sched 0.1 } set logtimer [new LogTimer] $logtimer sched 0.1 } -- Resmy Baby 08DI005 NIE