[ncl-talk] creating daily files from hourly outputs

[Noelia otero]

Hi Karin,

Yes, I know..that's why I am not sure how I can do it. If I have 24 files
for one day, I just wanted to extract some variables and storage the daily
values in one single file.
Is there any way? If I use system("rm -rf" +file_out) my file with previous
value is removed...so I would have a new file with the current time, which
I don't want.. any suggestion?

Thanks!
Noelia

2018-01-19 13:30 GMT+01:00 Karin Meier-Fleischer via ncl-talk <
ncl-talk at ucar.edu>:

> Hi Noelia,
>
> NCL can't create a new file when it already exits. You have to make sure
> that the file doesn't exist or delete it before using addfile.
>
> system("rm -rf "+file_out)
> wrfpost = addfile(file_out,"c")
>
> -Karin
>
> Am 19.01.18 um 13:15 schrieb Noelia otero via ncl-talk:
>
> Hi all,
>
> I have hourly files from WRF and I wanted to create daily files (with the
> hourly outputs, Time=24). I was using addfile(, "c")....I know the error I
> got it is caused by "c", once the first file is created I can´t opened
> again..(If I am not wrong, right?) Is there any way to do it?
>
> print(file_in)
> ; wrfout_d01_2010-01-01_00:00:00.nc
> wrfin = addfile(file_in,"r")
>
> ; I want the output: file_out=met_wrfout_d01_2010-01-01.nc
> wrfpost = addfile(file_out,"c")    ;create new netCDF file
>
> pres_pa = wrf_user_getvar(wrfin,"pres",-1)
> t_k = wrf_user_getvar(wrfin,"tk",-1)
>
> wrfpost->t_k= t_k
> wrfpost->pres_pa= pres_pa
>
> Time = wrf_user_getvar(wrfin,"Times",-1)
> lat = wrf_user_getvar(wrfin,"lat",-1)
> lon = wrf_user_getvar(wrfin,"lon",-1)
>
> wrfpost->time    = Time
> wrfpost->lat= lat
> wrfpost->lon= lon
>
>
> Thanks in advance,
> Best
> Noelia
>
>
>
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> Visualization, NCL, CDO
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