[gradsusr] Creating data files
Anna Cinzia Marra
a.marra at isac.cnr.it
Tue May 18 05:47:19 EDT 2010
Hello Alexandre,
my radar data file has this structure, as I already told you:
# Fields: z y x DBZ
# Units: km km km dBZ
1 -224.625 -224.625 35
1 -224.625 -223.875 28
1 -224.625 -223.125 20
1 -224.625 -222.375 20
1 -224.625 -221.625 18
They are related to a single radar scan (so only one time), but they have
20 z levels (from 1 km to 15.25 km every 0.75 km), 600 y points and 600 x
points (from -224.625 km to 224.625 km every 0.75 km). Both x and y are
obviously related to longitude and latitude.
I modified radar.f in order to account for my big dataset.
I modified your control file in the following way
dset ^0dbz.bin
title Analysis DBZ
undef -32
xdef 600 linear -224.625 0.75
ydef 600 linear -224.625 0.75
zdef 20 levels
15.25
14.5
13.75
13
12.25
11.5
10.75
10
9.25
8.5
7.75
7
6.25
5.5
4.75
4
3.25
2.5
1.75
1
tdef 1 linear 22oct2005 1mn
vars 4
z 0 999 z(km)
y 0 999 y(km)
x 0 999 x(km)
dbz 20 999 DBZ
endvars
but I cannot see anything reasonable with grads. What am I wrong?
Thank again.
Cinzia
> I Understand. Other question can consult.
>
> Alexandre
>
>
>
>
>
> 2010/5/18 Anna Cinzia Marra <a.marra at isac.cnr.it>
>
>> Hello John,
>> thanks a lot, but that's not a problem of fortran. I hhad already
>> modified
>> radar.f according to my complete data file. Maybe I am not modifying in
>> the right way the control file.
>>
>> Cinzia
>>
>> > Cinzia,
>> >
>> > Edit the radar.f file you were sent by Alexandre and change the 4x5
>> array
>> > to fit the size of your big dataset.
>> >
>> > Change the input name to the name of your input file, Alexandre used
>> > 'dbz.txt'.
>> >
>> > This is not so much a GrADS issue as it is a knowledge of programming
>> and
>> > building software.
>> >
>> > After you change the array size to fit your dataset, then create the
>> > executable. e.g. gfortran -o dbz radar.f
>> >
>> > Rerun the application, e.g. ./dbz
>> >
>> > It will create the datafile dbz.bin and you can use the control file
>> he
>> > sent.
>> >
>> >
>> > John Huddleston, PhD
>> >
>> >
>> > -----Original Message-----
>> > From: gradsusr-bounces at gradsusr.org [mailto:
>> gradsusr-bounces at gradsusr.org]
>> > On Behalf Of Anna Cinzia Marra
>> > Sent: Monday, May 17, 2010 4:09 AM
>> > To: GrADS Users Forum
>> > Subject: Re: [gradsusr] Creating data files
>> >
>> > Hello,
>> > unfortunately I am starting now with grads. at the moment I am not
>> able
>> to
>> > display data from the bin file you sent me. I don't know why. Moreover
>> I
>> > am not able also to re-obtain that bin file by means of radar.f and I
>> > cannot send you the complete data file because it is too big.
>> > I am sorry.
>> >
>> > Thank you in advance
>> >
>> > Cinzia
>> >
>> >> Hello,
>> >>
>> >> send the file radar complete with the bin+ctl, please.
>> >>
>> >>
>> >>
>> >> 2010/5/14 Anna Cinzia Marra <a.marra at isac.cnr.it>
>> >>
>> >>> Hello,
>> >>> thanks a lot. I am trying to convert a complete radar data file, but
>> I
>> >>> have some problems with plot.
>> >>> I will try again.
>> >>>
>> >>> Cinzia
>> >>>
>> >>> > Hello,
>> >>> >
>> >>> > Send the program at fortran more files binary the ctl. With the
>> >>> binary
>> >>> +
>> >>> > ctl
>> >>> > you can see in the Grads
>> >>> >
>> >>> >
>> >>> >
>> >>> > 2010/5/13 Anna Cinzia Marra <a.marra at isac.cnr.it>
>> >>> >
>> >>> >>
>> >>> >> Hello,
>> >>> >>
>> >>> >> does anybody have a fortran program which converts measured radar
>> >>> >> reflectivity data to binary files read by grads?
>> >>> >>
>> >>> >> Here is an example of my data files:
>> >>> >>
>> >>> >> # Fields: z y x DBZ
>> >>> >> # Units: km km km dBZ
>> >>> >> 1 -224.625 -224.625 35
>> >>> >> 1 -224.625 -223.875 28
>> >>> >> 1 -224.625 -223.125 20
>> >>> >> 1 -224.625 -222.375 20
>> >>> >> 1 -224.625 -221.625 18
>> >>> >> ......................
>> >>> >>
>> >>> >> Thank you very much.
>> >>> >>
>> >>> >> Cinzia
>> >>> >>
>> >>> >>
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