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19991018: creating small grids

>From: Mike Trexler <address@hidden>
>Organization: .
>Keywords: 199910182037.OAA18592

>Steve,
>
>I'm trying create a rather small grid file using gdcfil
>and then putting the data into the grid with gdedit.  Is
>there some minimum limit on the size.  I tried making a
>2X2 grid which gdcfil did, but then when I tried putting
>data into it, it gave me errors....
>
> [GR -6]  Invalid navigation block.
> [GDEDIT -8]  The output grid file new.grd is invalid.
>
>Just wondering if you knew.
>
>Thanks
>Mike
>
>-- 
>__________________________________________________
>**************************************************
>******          C. Michael Trexler          ******
>******      N C State Univ. - Box 8208      ****** 
>******  Dept. of Mar/Earth/Atmos. Sciences  ******
>******        Research III   Rm. 100        ******
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>

Mike,

You need at least 3 grid points for both kx,ky due to the requirements
of calculating many of the grid functions.

The gr -6 errtor you get is from grrnav.f which has:
        IF  ( (ier .ne. 0) .or. (kx .le. 2) .or. (ky .le. 2) )  THEN
            iret = -6
            RETURN
        END IF

Steve Chiswell