<div dir="ltr">Just open the entire thing in GrADS and set t to the desired time level, keeping in mind that for the 6-hourly files you need to skip times (if you are using a range, it will do that for you automatically, at least with functions like max, min, and ave).<br><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Feb 14, 2015 at 5:38 AM, Syed Ahsan Ali <span dir="ltr"><<a href="mailto:ahsanshah01@gmail.com" target="_blank">ahsanshah01@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have grib2 forecast files from 0 to 174 hrs having variable time<br>
steps, 0 to 78 hours have 3-hourly files and next 6-hourly. I am using<br>
<a href="http://g2ctl.pl" target="_blank">g2ctl.pl</a> to make grads control file. It writes control file with equal<br>
3 hour time steps. It couldn't differentiate between 3-hour and 6-hour<br>
intervals present in the files. How can I make a control files having<br>
variable time intervals?<br>
<br>
Ahsan<br>
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