[gradsusr] Help new to grads

[bob duker]

Thanks for your response Dr. Huddleston,
I just downloaded opengrads2.0.  I have found all the files you mention, but
i have trouble following the rest. I'm new to grads and computer
programming. It would help me out a lot to learn some of the basics of using
grads. For example,

'gfortran -o readsnow readsnow.f'
does grads have a compiler in it or is this something i need to download
seperately? Is there a tutorial for grads basic functions that could help me
learn more.

Also I'm not sure what "Uncomment the open(unit=93 line and edit it to read
the file wk2010 in your local path" means.

I know that most grads users have far better understanding of this kind of
stuff then me, but the grads webpage says
"Users at all levels are encouraged to post questions and answers on the
basics of getting started".

Thanks,
Bob

On Wed, May 5, 2010 at 12:37 PM, Huddleston, John <
Huddleston at cira.colostate.edu> wrote:

>   Bob,
>
> Use a ftp client and go to ftp.cpc.ncep.noaa.gov and then into the wd52dg/snow
> directory.
>
> There is a wkly_89x89 directory. Download wk2010.
>
> There is a progs directory and the readsnow.f file. Download readsnow.ffile. Uncomment the open(unit=93 line and edit it to read the file wk2010in your local path. Edit the open(unit=95 line to save the output file of a
> name of your choosing. Compile the application using 'gfortran -o readsnowreadsnow.f'.
> Run it './readsnow'
>
>  There is a grads_snw directory and a control file. Download plt_snw.ctland edit the top line to be the same name as your output file from unit-95
> above.
>
> grads -l
> open plt_snw.ctl
> d snow
>
> If any of this makes no sense you need to take some basic IT and
> programming courses.
>
> John Huddleston, PhD, PE
>
>  ------------------------------
> *From:* gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] On
> Behalf Of bob duker [dukerbob at gmail.com]
> *Sent:* Tuesday, May 04, 2010 11:08 PM
> *To:* gradsusr at gradsusr.org
> *Subject:* [gradsusr] Help new to grads
>
>    Hello All,
> I'm doing snow Research and looking for a program to covert the climate
> prediction center (CPC) Northern Hemosphere raw weekly snow data (in 1's and
> 0's) into a useable number. I don't have much coding experience or computer
> science background, so i'm not sure how to covert the data myself, or what
> program to use. Also I don't have any fortran compiler. The CPC does covert
> the data into a nice table format, but they don't keep it up todate. Their
> website is http://www.cpc.ncep.noaa.gov/data/snow/. On their website they
> have a link to grads.
>
> The program they give for reading weekly 89*89 snow data is
>
> PROGRAM AREA
> C*********************************************************************
> C
> C THIS PROGRAM SIMPLY READS IN THE SNOW DATA AND
> C WRITES IT OUT FOR A GIVEN YEAR.
> C
> C VARIABLES:
> C
> C    ISNDAT - 89 X 89 SNOW DATA
> C
> C FILES:
> C
> C    A YEAR OF WEEKLY SNOW DATA IS STORED IN A FILE WITH
> C    THE NAMING CONVENTION:
> C
> C wk19xx   xx - is the year (ex. wk1973)
> C
> C*********************************************************************
>
>       DIMENSION ISNDAT(89,89)
>       CHARACTER*1 ICHAR1,ICHAR2
>       OPEN(11,FILE='INFILE',
>      *   FORM='FORMATTED',ACCESS='SEQUENTIAL')
>       OPEN(12,FILE='OUTFILE',
>      *   FORM='FORMATTED',ACCESS='SEQUENTIAL')
>        DO 199 LP = 1,52
> C*********************************************************************
> C
> C READS IN THE WEEKLY SNOW DATA.
> C
> C*********************************************************************
>         DO 200 I = 1,89
>         READ(11,100,END=10) IYEARS,IWKS,IROW,ICHAR1,(ISNDAT(I,J),J=1,45)
>   100    FORMAT (I4,2I2,A1,45I1)
>         READ(11,101,END=10)IYEARS,IWKS,IROW,ICHAR2,(ISNDAT(I,J),J=46,89)
>   101    FORMAT (I4,2I2,A1,44I1)
> C*********************************************************************
> C
> C WRITE OUT THE WEEKLY SNOW DATA.
> C
> C*********************************************************************
>          WRITE(12,100) IYEARS,IWKS,IROW,ICHAR1,(ISNDAT(I,J),J=1,45)
>          WRITE(12,101) IYEARS,IWKS,IROW,ICHAR2,(ISNDAT(I,J),J=46,89)
>   200   CONTINUE
> READ(11,102) ICONST
>   102    FORMAT(I4)
> WRITE(12,102) ICONST
> C
>   199   CONTINUE
>    10   CONTINUE
> 999     STOP
>          END
>
> I'm using windows 7 64bit operating system. My question is how do i use
> grads to view the snow data or is there a fortran compiler the above program
> will work on that i should use instead?
> Thanks,
> Bob R Duke
>
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>
>
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