Displaying u and v wind data from two separate files

[Mandelli Alessandro]

Charles Williams wrote:

> I am trying to view vector wind data from two separate self describing
> NetCDF files (uwind.nc and vwind.nc corresponding to the two wind
> components) - ending up with an image showing wind direction (arrows)
> and wind strength (shaded contours).  How can I do this?  I really have
> 2 questions therefore: i) how can I have both files open at the same
> time such that both can be displayed at once; and ii) how can I use both
> vector and contour gxout options?

sdfopen vwind.nc
sdfopen uwind.nc

set gxout vector
d u.1; v.2
set gxout contour
d mag(u.1, v.2)