BEGIN {

arguments = 2;

if (ARGC < arguments || ARGC > arguments || flowtype == 0) {

? ? printf("error: wrong number of arguments.\nawk: usage - awk -f flowcalc.awk [-v graphgran=value] [-v fidfrom=value] [-v fidto=value] [-v fid=value] -v flowtype=\"type\" -v outdata_file=\"filename\" indata_file\n--%d",ARGC);

? ? exit;

}

measure_interval = 0.5;
bits = 0;
first_time = graphgran;

}

{

if (($1 == "r") &&
? ((fidfrom == 0 && fidto ==0) || (($8 == fid) && ($3 == fidfrom) && ($4 == fidto))) &&
? (flowtype == "all" || flowtype == $5)) {

? if (($2 - first_time) > measure_interval) {

? ? first_time = first_time + measure_interval;

? ? rate = (bits/1000000)/first_time;

? ? print filename first_time, rate;

? ?}

? ?bits = bits + $6 * 8;

}

}

END {

measure_interval = 0.5;

first_time = first_time + measure_interval;

rate = (bits/1000000)/first_time;

print filename first_time, rate;