[ncl-talk] read and write netcdf-4 compressed files
Dan Chen
dchen at ucar.edu
Thu Feb 4 20:16:35 MST 2016
Hi,
My name is Dan Chen working at MMM, NCAR. I'm using ncl to read a
variable and write into the netcdf-4 compressed file on Yellowstone, but
failed.
The script is as blow:
========================================
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT//lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRF_contributed.ncl"
begin
fils = "*/glade/scratch/dchen/ncl_netcdf4/analysis.ensmean*"
in = addfile(fils,"w")
bb = wrf_user_getvar(in,"PM2_5_DRY",0)
bb = bb*10
fils->PM2_5_DRY = (/bb/)
end
==========================================
The error is as below
=========================
Copyright (C) 1995-2015 - All Rights Reserved
University Corporation for Atmospheric Research
NCAR Command Language Version 6.3.0
The use of this software is governed by a License Agreement.
See http://www.ncl.ucar.edu/ for more details.
fatal:["NclNetCDF4.c":3073]:NclNetCDF4.c: Error in nc_def_var_chunking
in file (/glade/scratch/dchen/ncl_netcdf4/analysis.ensmean) for writing,
at line: 3073
line 3074 of NclNetCDF4.c: NetCDF: Attempt to define var properties,
like deflate, after enddef.
============================
If I change the input file to a normal netcdf file without the
compression option, it works fine. But I do need to process those
netcdf-4 compressed files. Can you let me know if there is anything I
can try?
Many thanks,
Dan
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