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[ferret_users] Extra dimensions in NetCDF Files



Dear Ferreters,

Recently i have upgraded my Ferret to the latest version 6.8.2. After this i started to experience some thing peculiar. I am trying to create a netcdf file with 4 dimensions and while saving 2 additional dimensions are created. Due to these additional dimensions, while appending/saving the netcdf file i am getting an error as follows: **ERROR: Size of file doesn't match size specified by variables/grid"
The JNL i am using is given below: (Note: just for example i have created this)
==============================
yes? define axis/x=65:65:1/units=degrees xaxis
yes? define axis/y=15:15:1/units=degrees yaxis
yes? define axis/z=10:70:10/units=meters zaxis
yes? define axis/t="15-jan-2010":"15-Jan-2010":1/units=days taxis
yes? define grid/x=xaxis/y=yaxis/z=zaxis/t=taxis mygrid
yes? file/order=xyzt/grid=mygrid/var="dep,temp" prof.dat
yes? show data
     currently SET data sets:
    1> ./prof.dat  (default)
 name     title                             I         J         K         L         M         N
 DEP      DEP                              1:1       1:1       1:7       1:1       ...       ...
 TEMP     TEMP                             1:1       1:1       1:7       1:1       ...       ...
yes? show grid temp
    GRID MYGRID
 name       axis              # pts   start                end
 XAXIS     LONGITUDE            1mr   65E                  65E
 YAXIS     LATITUDE             1 r   15N                  15N
 ZAXIS     Z (METERS)           7 r   10                   70
 TAXIS     TIME                 1 r   15-JAN-2010 00:00    15-JAN-2010 00:00
 normal    E
 normal    F
===================================
in the above one can see the M and N dimensions created even though there are only 4 dimensions defined. 
Can some one clarify if this is bug and point out where i am going wrong.

Thanks in advance.
rohith



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