grads xdfopen netcdf file with template option

[Diane Stokes]

Dear Youhua,

The new "dtype netcdf" in 1.9b3 has done the trick for me for netcdf
files with multiple time steps.  See:

http://grads.iges.org/grads/gadoc/descriptorfile.html#DTYPE

You'd then use "open" rather than "xdfopen".

     Good Luck.
       Diane


Youhua Tang wrote:

> Hello, All:
>
> I found that current version of grads do not well handle
> the netcdf file with template option. When I use xdfopen to open
> the ddf file as below
>
> dset ^SOUT.%m2-%d2-00.nc
> title 3D gaseous species
> undef  -99999.0
> options template
> xdef COL 97 linear 1. 1.
> ydef ROW 62 linear 1. 1.
> zdef LAY 21 levels 7.25 25.40 54.5117 109.328 219.887 406.969 675.054
> 990.77 135
> 8.73 1828.5 2368.88 2942.16 3553.04 4207.36 4912.52 5678.06 6516.63
> 7527.75 8868
> .97 10717.2 13153.4
> * in GMT
> tdef TSTEP 377 linear 00Z01JUL2004 3hr
> vars 1
> SO2=>so2 21 99 SO2 (ppbv)
> endvars
>
> The grads-1.8s111 has "Segmentation fault" (my linux machine uses
> RedHat 7.3). The grads-1.9beta3 is "slightly" better as it can finish
> 'xdfopen', but "Segmentation fault" appeared again when I perform further
> operation, like 'd ave(so2,t=1,t=300)'. I found that only
> grads-1.7beta9 can handle all the issues, but this old version lacks of
> some useful math functions. Does anybody know how to
> solve this problem?
>
> Thanks a lot
>
>
> Youhua Tang
>

--
Diane Stokes
Environmental Modeling Center
National Weather Service/NOAA