Hi,
could anybody please help me, actually i am trying to get the output in graph of my wireless aodv scenerio code but it is showing some error and if i am missing someting in my code, i will really appreciate if somebody point it out please.
the code is below...
proc record {} {
global null0 ns_ tracefd
#Get an instance of the simulator
set ns_ [Simulator instance]
#set the time after which the procedure should be called again
set time 0.5
#How many bytes have been received by the traffic sinks?
set bw0 [$null0 set bytes_]
#Get the current time
set now [$ns_ now]
#Calculate the bandwidth (in MBit/s) and write it to the files
puts $tracefd "$now [expr $bw0/$time*8/1000000]"
#Reset the bytes_ values on the traffic sinks
$null0 set bytes_ 0
#Re-schedule the procedure
$ns_ at [expr $now+$time] "record"
}
and the error is below...
Starting Simulation...
ns: record: can't read "bytes_": no such variable
while executing
"subst $[subst $var]"
(procedure "_o568" line 5)
(Object next line 5)
invoked from within
"_o568 next bytes_"
("eval" body line 1)
invoked from within
"eval $self next $args"
(procedure "_o568 line 18)
invoked from within
"$null0 set bytes_"
(procedure "record" line 9)
invoked from within
"record"
I would be really thankfull and appreciate your people help
Muhammad Imran khan
MSc Data Telecommunication and Network
Salford university, Manchester,U.K.
