Need help in using GRADS for Windows to plot GRIB data

[PHUONG NGUYEN]

Dear MR See Hai Ooi,
Thank you very much. It works very well.
Best regards
--- See Hai Ooi <axl419 at YAHOO.COM> wrote:

> Hi Ms Nguyen,
>
>    (1) Your hhca50.dat is not a grib data but an
> ascii
> file.  You might have done some conversion onto it.
>    (2) I downloaded a hhca50 file for 00Z on 6
> January
> 2008.
>    (3) Based on your information given, I wrote a
> .ctl
> file for you. [You can use wgrib -v hhca50 to get
> the
> variable code, i.e. 7,100,500]. Gribscan utility is
> not meant to create .ctl file.
>    (4) Use gribmap -v -i hhca50.ctl to obtain the
> index file, viz. hhca50.idx
>    (5) From window version of GrADS,
>        open d:\jmatest\hhca50.ctl, then you can get
> the analysis you need.
>
>     The above-mentioned relevant files are attached
> herewith for your reference.  Hope this helps.
>
>     Best regards.
>
> (Mr) OOI See Hai
> a retired meteorologist in Malaysia
>
>
>
>
> --- PHUONG NGUYEN <ntmphuong at YAHOO.COM.AU> wrote:
> > > Date: Wed, 2 Jan 2008 19:32:00 +1100 (EST)
> > From: PHUONG NGUYEN <ntmphuong at yahoo.com.au>
> > Subject: Need help in using GRADS for Windows to
> > plot GRIB data
> > To: doty at cola.iges.org
> >
> > Dear Brian Doty,
> > I am Phuong, working as a researcher at National
> > Center for Hydrometeorological Forecast of
> Vietnam.
> > I would like to use GRADS for Windows to plot GRIB
> > data. I read the GRADS User's Guide and follow it
> :
> >
> > 1. Run gribscan to creat the data descriptor file
> > but
> > fail : for example I have a file HHCA50. This is
> > GRIB
> > 255 file of geopotential height of 500 hPa at
> 00UTC
> > 01/01/2008 from JMA global analysis. It contains
> 113
> > x
> > 65 gridpoints of the domain from 60E to 200E, 20S
> to
> > 60N, linear resolution of 1.25 degrees. I attach
> > this
> > file in attachment herewith.
> > I run
> > gribscan -i HHCA50
> > but there is something in screen : 5 [main]
> gribscan
> > 3436 handle-exceptions : Exception :
> > STATUS_ACCESS_VIOLATION
> >
> > Please try and explain me why I can't run gribscan
> > for
> > this file to creat the data descriptor file.
> >
> > Thank you very much.
> > Phuong
> >
> > MS NGUYEN THI MINH PHUONG
> > National Center for Hydrometeorological Forecasts
> > Address:     4 DANG THAI THAN, HANOI, VIETNAM,
> > Email :        ntmphuong at hotmail.com,
> > ntmphuong at yahoo.com.au
> > ======
>
>
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MS NGUYEN THI MINH PHUONG
National Center for Hydrometeorological Forecasts
Address:     4 DANG THAI THAN, HANOI, VIETNAM,
Email :        ntmphuong at hotmail.com, ntmphuong at yahoo.com.au
======


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