[gradsusr] how to read netdcf using description file

[Eduardo Agosta Scarel]

Hello everybody!

I am trying to read netcdf data (EP flux) that has the header info pasted
below. If I use the sdfopen directly it does not open, prompting the error
message: SDF file has no discernible X coordinate.

I am using Grads for Windows. I tried to use xdfopen. Now the problem I
have is that it cannot recongnize the XVAR dimension when using a simple
description file as the one below.

DSET ^epflux_monthly_ncep.nc
TITLE This is a sample
UNDEF 99999.0
XDEF 1 levels 0
YDEF 73 LINEAR -90.0 2.5
TDEF 768 LINEAR 0Z01JAN1948 1DY
VARS 2
epflux_vert epflux_ver
epflux_horz epflux_horz
ENDVARS

Can someone help me with the description file to open using the xdopen
command?

Thanks.

Eduardo.


-----------------
Header INFO
---------------
NcFileName ^epflux_monthly_ncep.nc
NcFileType Unknown
Global Attributes
Name NcType Value
Conventions NC_CHAR "COARDS"
description NC_CHAR "EP flux vector from NCEP reanalysis (monthly mean)"
author NC_CHAR "Ingo Wohltmann, Alfred Wegener Institute"
date NC_CHAR "16-Mar-2012 19:45:31"
history NC_CHAR "Version 1.0"
Dimensions
Name Excel Name Value
time time 768
levels levels 17
latitude latitude 73
Variables
Name Excel Name NcType Dimension Attribute Name Attribute NcType Attribute
Value NcStorageType
time time NC_DOUBLE time units NC_CHAR "days since 1900-01-01 00:00:00"
NC_DOUBLE
- - - - long_name NC_CHAR "Days since 1st January 1900 00:00 GMT" -
levels levels NC_DOUBLE levels units NC_CHAR "hPa" NC_DOUBLE
- - - - long_name NC_CHAR "Pressure (hPa)" -
latitude latitude NC_DOUBLE latitude units NC_CHAR "degrees_north" NC_DOUBLE
- - - - long_name NC_CHAR "Latitude (degrees north)" -
year year NC_DOUBLE time units NC_CHAR "n/a" NC_DOUBLE
- - - - long_name NC_CHAR "Year of mean" -
month month NC_DOUBLE time units NC_CHAR "n/a" NC_DOUBLE
- - - - long_name NC_CHAR "Month of mean" -
epflux_vert epflux_vert NC_DOUBLE time x levels x latitude units NC_CHAR
"kg/s2" NC_DOUBLE
- - - - long_name NC_CHAR "EP flux vertical component (kg/s2)" -
epflux_horz epflux_horz NC_DOUBLE time x levels x latitude units NC_CHAR
"kg/s2" NC_DOUBLE
- - - - long_name NC_CHAR "EP flux horizontal component (kg/s2)" -
Data
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