[gradsusr] Random Missing Values Grid Cells Using Cressman Analysis

[Perry, Aaron]

Thank you for the suggestions Stephen!


Aaron D. Perry
Class of 2016
Lyndon State College
Lyndonville, VT 05851
Twitter: @arnpry<https://twitter.com/arnpry>
Email: Aaron.Perry at lyndonstate.edu<http://Aaron.Perry@lyndonstate.edu/>
________________________________
From: gradsusr <gradsusr-bounces at gradsusr.org> on behalf of Stephen McMillan <smcmillan at planalytics.com>
Sent: Tuesday, February 20, 2018 8:23:39 AM
To: GrADS Users Forum
Subject: Re: [gradsusr] Random Missing Values Grid Cells Using Cressman Analysis

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<mailto: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:

[cid:74f8c8c3-6cc1-4433-be3b-d33dcbcef40a]


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<http://Aaron.Perry@lyndonstate.edu/>

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