[gradsusr] Random Missing Values Grid Cells Using Cressman Analysis

Stephen McMillan smcmillan at planalytics.com
Tue Feb 20 08:23:39 EST 2018


Aaron,

Try increasing the radii (either more or higher values), adding another
station in the area of the blank boxes, or increase your dummy grid size.
Any one of the three should cause those blanks to disappear.

Stephen Mc

On Tue, Feb 20, 2018 at 7:41 AM, Perry, Aaron <Aaron.Perry at lsc.vsc.edu>
wrote:

> Good Morning All,
>
>
> I am producing a contoured layer via Cressman interpolation in GrADS.
>
>
> I'm running into a problem where I'm seeing random grid cells with missing
> values over areas that really should have contouring. I know that a
> Cressman interpolation is based upon radial interpolation so, my input
> values may be off slightly for my station spacing.
>
>
> *GrADS Code:*
>
>
> *'define temp = oacres(dummy.1(t=1),temp.2(t=1),12,10,7,4,2,1)'*
>
>
> *Image sample:*
>
>
>
> Best regards,
>
> *Aaron D. Perry*
> Class of 2016
> Lyndon State College
> Lyndonville, VT 05851
> Twitter: @arnpry <https://twitter.com/arnpry>
> Email: Aaron.Perry at lyndonstate.edu
>
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>
>
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