[gradsusr] open multiple file in grads

[hossein lotfi]

Hi all users
I have a problem in opening multiple NetCDF files in gards
for example I have 12 file such as ( ersst.197301.nc ..... ersst.197312.nc )
my descriptor file is
  DSET ^ersst.1973%m2.nc                            ====> or in another file
: DSET ^ersst.1973%im2.nc
   OPTIONS template
   DTYPE netcdf
   TDEF 0 LINEAR 00Z15JAN1973 1mo

I open this file with xdfopen command but I have this problem :
Scanning Descriptor File:  sst.ctl
gadxdf error: Missing or invalid dimension size.
  --> The invalid description file record is:
  --> tdef 0 linear 00z15jan1973 1mo
  The data file was not opened.

I attache one of this file for you
can any one help me?
Thanks
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