Hi,<br><br>I'm trying to apply a filter to some 3-km WRF data in order to compare it to 20-km observational data. I know there's a Gaussian filter with Gempak to show values from larger wavelengths, but Grads has the smth9 function. I'm using Grads version 2.0.1, and I was wondering if there was a similar function or script I could use in Grads? Thanks,<br>
<br>Darren<br>