Newbie questions!
Kwan-yin Kong
kongkwan at SCI.CCNY.CUNY.EDU
Mon Nov 14 17:25:52 EST 2005
Hi Wen,
Did you set (or put it in the shell initialization file)
the environment variable "GRADS" to your GrADS directory?
Kwan-yin Kong
On Mon, 14 Nov 2005 14:07:25 -0500
fangwen at CLIMATE.CESTM.ALBANY.EDU wrote:
>
>Hi,
>I use absolute path to open model.ctl successfully.
>but in my model.ctl file, the first line is:
>DSET ^model.dat
>I think there must be a method to open the file not using
>absolute path. where I can set the path ?
>
>wen
>
>----- Original Message -----
>From: Eric Tiong <eric at OFFSHOREWEATHER.COM.AU>
>Date: Monday, November 14, 2005 12:52 pm
>Subject: Newbie questions!
>
>> Bob,
>>
>> This could be a unix2dos or dos2unix problem. I think
>>the ctl
>> file can not have CR/LF pairs in line breaks.
>>
>> Eric
>> ----- Original Message -----
>> From: Bob
>> To: GRADSUSR at LIST.CINECA.IT
>> Sent: Tuesday, November 15, 2005 4:05 AM
>> Subject: Re: Newbie questions!
>>
>>
>> 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
>> To: 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
>> To: 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
>> 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
>>
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