gnuplot - Plot detailed trunk occupation from CDR records -

so have processed cdr file

250  0   2014/11/10 18:00:51      2014/11/10 18:01:13    00:00:22 249  0   2014/11/10 17:59:17      2014/11/10 18:01:29    00:02:12 249  0   2014/11/10 18:01:45      2014/11/10 18:01:53    00:00:08 251  0   2014/11/10 18:00:58      2014/11/10 18:04:21    00:03:23 253  4   2014/11/10 18:04:29      2014/11/10 18:04:52    00:00:23 249  0   2014/11/10 18:02:24      2014/11/10 18:05:04    00:02:40 265  4   2014/11/10 18:05:02      2014/11/10 18:05:10    00:00:08 249  0   2014/11/10 18:05:40      2014/11/10 18:05:40    00:00:00 273  4   2014/11/10 18:04:58      2014/11/10 18:05:49    00:00:51 249  0   2014/11/10 18:05:50      2014/11/10 18:05:50    00:00:00 249  0   2014/11/10 18:05:58      2014/11/10 18:06:34    00:00:36 249  0   2014/11/10 18:06:51      2014/11/10 18:08:44    00:01:53 249  0   2014/11/10 18:13:47      2014/11/10 18:13:47    00:00:00 250  0   2014/11/10 18:13:24      2014/11/10 18:14:08    00:00:44 270  4   2014/11/10 18:14:09      2014/11/10 18:14:43    00:00:34 249  0   2014/11/10 18:15:36      2014/11/10 18:15:36    00:00:00 267  4   2014/11/10 18:15:17      2014/11/10 18:16:31    00:01:14 269  4   2014/11/10 18:11:31      2014/11/10 18:19:27    00:07:56 249  0   2014/11/10 18:25:06      2014/11/10 18:26:28    00:01:22 250  0   2014/11/10 18:26:09      2014/11/10 18:26:42    00:00:33 

first column channel number, second direction (outgoing/incoming), third field start date/time, fourth end date/time , last 1 duration of conversation. possible plot diagram similar gantt diagram date/time on x axis (taken data) , on y axis every line present each channel each converstion present segment on line?

you can use vectors plotting style draw information. using arrowstyle variable can use different appearances incoming , outcoming calls:

set ylabel 'channel number' set xlabel 'time'  incoming = 0 set style arrow 1 lc rgb 'green' lw 2 size char 0.5,90 heads set style arrow 2 lc rgb 'red' lw 2 size char 0.5,90 heads  set xdata time set timefmt '%y/%m/%d %h:%m:%s'  plot 'data.txt' using 3:1:(strptime('%h:%m:%s', strcol(7))):(0):($2 == incoming ? 1 : 2) vectors arrowstyle variable notitle