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19990719: GDBIINT Program

Brett,

I'll have to look at how the missing values are handled. I'll look at
interpolating the AVN thinned to the CED grid you mention. I know I had the 
program
issue a warning if the output grid had points outside the original domain- which
would be possible with the ETA, but the AVN is global...assuming all 8 parts
of the grid have been received, so this should not be a problem unless there
is a seaming problem. 

Steve Chiswell

>From: Brett Newkirk <address@hidden>
>Organization: .
>Keywords: 199907192220.QAA02818

>Hi Steve:
>       I have been working with the GDBIINT program but I have a
>question. I create a file (i.e. my own file with PROJ=CED and a
>particular region of the Pacific/West Coast: 29;-161;58;-90). I am trying
>to interpolate the AVN thinned grids to this new grid. The interior points
>look fine, but the boundary points have RMISSD values along with some
>other large negative values in TMPK at 800mb values for example. Did you
>notice problems in the testing of this routine or is there something that
>I am missing in using the program? Can one use the program to go from one
>projection to another with varying resolutions as long as the navigation
>blocks are defined?
>       I am noticing this problem in converting the ETA grids to this
>grid as well. However, the NOGAPS grid (CED, global coverage) does not
>have this boundary problem. Any insight that you could give on this issue
>I would greatly appreciate.
>       Also, I spoke to David Ovens and he had a bicubic spline routine
>written (usable by GR_INTP, for example). Thanks again for your help---
>Brett
>
>Brett Newkirk    E-MAIL: address@hidden
>Office: ATG 424  Atmospheric Science/Geophysics Building
>Mailing Address: Department of Atmospheric Sciences, University of Washington
>                 Box 351640
>                 Seattle, WA 98195-1640
>Office Phone: (206) 685-2183
>