Re: Large Size netcdf file problem

From: MUHTARJAN osman (muhterjan AT XXXXXX)
Date: Mon May 03 2004 - 02:33:47 MDT

  • Next message: Rick Grubin: "Re: Large Size netcdf file problem"

    Thanks, But my problem is like this:
    if I use
    f = addfile ("/b/users/mjosman/data/uwnd.1979.nc","r") ; only one year
    data
    it works well and the output is reasonable,but if I change that to
    f = addfile ("/b/users/mjosman/data/uwnd_79-03.nc","r") ; 25 years data
    there will be an error message "File requested does not exit".

    Muhtarjan Osman
    ASGG
    LAWR
    UC Davis

    >From: Dennis Shea <shea AT ucar.edu>
    >To: ncl-talk AT ucar.edu
    >CC: muhterjan AT hotmail.com, mjosman AT ucdavis.edu
    >Subject: Re: Large Size netcdf file problem
    >Date: Mon, 3 May 2004 02:14:43 -0600 (MDT)
    >
    > > I used "ncrcat" to creat a very large netcdf file(a combination of 25
    >years'
    > > 17 level zonal wind field). Now when I used "addfile" command to use
    >this
    > > file. there will be an error message" File requested does not exit". Is
    >this
    > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    > > due to the file size limit of NCL?
    > > Thank you very much.
    >
    >This message has nothing to do with file size.
    >You are not pointimg addfile to the correct location.
    >
    > f = addfile ("foo.nc", "r") ; foo.nc is in current directory
    > f = addfile ("./foo.nc", "r") ; foo.nc is in current directory
    >
    > f = addfile ("/my/data/foo.nc", "r") ; /my/data directory
    >
    > dir = "/ptmp/user/"
    > f = addfile (dir+"foo.nc", "r") ; /ptmp/user directory
    >
    > dir = "/ptmp/user/"
    > fil = "foo.nc
    > f = addfile (dir+fil,"r") ; /ptmp/user directory
    >
    >----------
    >On most systems netCDF files can not exceed 2GB.
    >However, if your system has Large File Support (LFS),
    >netCDSF files can be larger than 2GB.

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