Newbie questions!
Jean Pierre Arabonis
arabonis at EGS.UCT.AC.ZA
Mon Nov 14 12:12:59 EST 2005
Hi
Try it on your linux box ..... I don't think my advice applies to
the windowzzz versions of grads, maybe someone else on the help list can
help with windowzzz.
Good Luck
JP
Bob wrote:
> Still no luck!! Whatever I do, I still get those can`t open file errors.
>
> Thanks for your help though. I`m running the win32e version.
>
>
>
> ----- Original Message -----
> From: Jean Pierre Arabonis <mailto:arabonis at EGS.UCT.AC.ZA>
> To: GRADSUSR at LIST.CINECA.IT <mailto:GRADSUSR at LIST.CINECA.IT>
> Sent: Monday, November 14, 2005 12:49 PM
> Subject: Re: Newbie questions!
>
> Hi Bob
> Should not matter where you put them, check that the model.ctl
> file has the fist line looking like so:
> dset ^model.grb
> and not pathed somewhere else, check the permissions on teh files
> you need to at least be able to read them.
> Note that if you are running grads from another directory than the
> one where the files reside you bust give the absolute path to the
> control file, eg
>
> ga> open /your full path/model.ctl
>
> Your directory holding the files should look somthing like so:
>
> arabonis at baltic:/mnt/pacific/data/gradstut/atmosdata> ls -lat
> total 593
> -rw-r--r-- 1 arabonis osis 593060 Jan 14 2003 model.grb
> -rw-r--r-- 1 arabonis osis 4633 Jan 14 2003 model.gmp
> drwxr-xr-x 2 arabonis osis 144 Jan 14 2003 ./
> -rw-r--r-- 1 arabonis osis 651 Jan 14 2003 model.ctl
> drwxr-xr-x 4 arabonis osis 104 Jan 14 2003 ../
>
> and the ctl file like so:
>
> arabonis at baltic:/mnt/pacific/data/gradstut/atmosdata> cat model.ctl
> dset ^model.grb
> title "Sample Model Data for GrADS Tutorial"
> undef 1e+20
> dtype grib
> index ^model.gmp
> xdef 72 linear 0.000000 5.000000
> ydef 46 linear -90.000000 4.000000
> zdef 7 levels
> 1000 850 700 500 300 200 100
> tdef 5 linear 0Z2jan1987 1dy
> vars 8
> ps 0 1, 1, 0, 0 Surface pressure [hPa]
> u 7 33,100 Eastward wind [m/s]
> v 7 34,100 Northward wind [m/s]
> z 7 7,100 Geopotential height [m]
> t 7 11,100 Air Temperature [K]
> q 7 51,100 Specific humidity [kg/kg]
> ts 0 11,105, 2 Surface (2m) air temperature [K]
> p 0 59, 1, 0, 0 Total precipitation rate [kg/(m^2*s)]
> endvars
>
> Hope this helps
> JP
>
>
>
> Bob wrote:
>
>> Thankyou,
>>
>> I have the datafiles all in the same directory. I have placed
>> them in the main Grads folder, and tried in just about every
>> other folder too but I still get the error.
>>
>> I can`t think of anything else to try!! I`ve been waiting to play
>> around with Grads for ages, but find this frustrating that I
>> can`t even get off the starting block :D
>>
>> Is there a specific place where the datafiles (ctl, grib) should go?
>>
>> Ron.
>>
>> ----- Original Message -----
>> From: Jean Pierre Arabonis <mailto:arabonis at EGS.UCT.AC.ZA>
>> To: GRADSUSR at LIST.CINECA.IT <mailto:GRADSUSR at LIST.CINECA.IT>
>> Sent: Monday, November 14, 2005 12:25 PM
>> Subject: Re: Newbie questions!
>>
>> Hi Bob
>> Welcome to grads, firstly I feel that grads is better
>> suited to the linux environment - besides being basically
>> anti-windows, you'll find a lot of the users of grads are
>> working in a unix/linux environment and user support is
>> probably better in that area, further for automation of grads
>> scripts, linux is very flexible (which seems to be your
>> ultimate goal).
>> It seems though there have been some library issues with
>> recent versions of grads on certain flavours of linux, red
>> hat does not seem to be one of them but a trawl of the
>> archives should resolve any compatibility issues.
>> With regard to load, thats going to depend on your input
>> files and what you do with them, however grads is very stable
>> and will generally complete the task without falling over. I
>> have grads running on an old 450 MHz P2 running scripts and
>> it works just fine.
>> With regard to your problem with the model file it seems
>> to me to be a path problem, the data file and ctl file must
>> be in the same directory.
>> Good Luck
>> Jean Pierre
>>
>>
>> Bob wrote:
>>
>>> Hi all,
>>>
>>> I`ve never used Grads before, so it`s a completely new ball
>>> game for me!! The most ambitious I`ve been is to use a
>>> desktop utility likes DAWS!
>>>
>>> I have several questions to ask, where the answers could not
>>> be found on the Cola homepage.
>>>
>>> I would like to install Grads on my server, mainly so I can
>>> ingest and display grib data/model charts on my website.
>>> What kind of server loads would I be looking at here? I need
>>> to know, whether my server can cope with it it!! Can someone
>>> shed some light on using Grads on a redhat linux based server?
>>>
>>> Secondly, I haven`t looked through any of the documentation
>>> as yet. I thought it might be a good idea to install the
>>> windows version locally on my W2K PC first, so I can get an
>>> idea of how Grads works.
>>>
>>> I believe I have it installed correctly, but I can`t even
>>> get off the starting block!! I tried to open the
>>> demo model.ctl file that comes with the online tutorial -
>>> all I get are errors `Scanning description file: model
>>> Open Error: Can't open description file`
>>>
>>> Do I need to place the ctl, grib and gmp in a certain
>>> folder? All the tutorial says is download them and place
>>> them locally. Thanks.
>>>
>>> Regards,
>>> Ron.
>>
>>
>>--
>>Jean Pierre Arabonis
>>arabonis at egs.uct.ac.za <mailto:arabonis at egs.uct.ac.za>
>>Tel 021 780 1021 cell 084 401 1365
>>This email is 100% Microsoft Free
>>
>>
>
>--
>Jean Pierre Arabonis
>arabonis at egs.uct.ac.za <mailto:arabonis at egs.uct.ac.za>
>Tel 021 780 1021 cell 084 401 1365
>This email is 100% Microsoft Free
>
>
--
Jean Pierre Arabonis
arabonis at egs.uct.ac.za
Tel 021 780 1021 cell 084 401 1365
This email is 100% Microsoft Free
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20051114/e5588f1c/attachment.html
More information about the gradsusr
mailing list