kriging for point estimation

classic Classic list List threaded Threaded
2 messages Options
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

kriging for point estimation

Zoya Tariq
This post was updated on .
CONTENTS DELETED
The author has deleted this message.
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: kriging for point estimation

Edzer Pebesma
Administrator
You only have to read the documentation of krige.

Please note that this list is not meant for help with home work assignments.

On 07/10/2014 01:06 PM, Zoya Tariq wrote:

> I am new in geostatistics, so far what i read about kriging is that it is
> used for multiple point estimation. I need to interpolate value of a single
> point whose coordinates are given, by using at least six neighbors.
> The coordinates of my point are (100,75), and i find neighbors using this
> command.
>> coord=which((walk$x >= 75 & walk$x <= 100) & (walk$y >= 150 & walk$y <=
> 175));coord
> [1]  68  69 171 240 241 242
> These are row ids of neighbor points, I don't know how to limit kriging to
> only use these points for interpolation. Another problem is that the target
> point is not part of the data set and how I am suppose to mention that.
> i want to use this function
>> w.cal=walk[1:6,]
>> w.val=walk[272,]
>> k.val=krige(v~1,loc=w.cal,newdata=w.val,model=vmf)
>> k.val
>> summary(k.val)
> mydata.txt <http://geostatistics.forum.52north.org/file/n4022900/mydata.txt>  
> i attach my data set.
> *QUESTION*: Use kriging to estimate your target point by choosing at least 6
> nearest neighbors of it using 4 different variogram models and find the
> kriging variance for each. Compare your results in terms of minimum variance
> property.
>
> Anyone please help me out..i really need to figure this out.
>
>
>
> --
> View this message in context: http://geostatistics.forum.52north.org/kriging-for-point-estimation-tp4022900.html
> Sent from the 52° North - Geostatistics Community Forum mailing list archive at Nabble.com.
> _______________________________________________
> Geostatistics mailing list
> [hidden email]
> http://list.52north.org/mailman/listinfo/geostatistics
> http://geostatistics.forum.52north.org
>
--
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Heisenbergstraße 2, 48149 Münster, Germany. Phone: +49 251
83 33081 http://ifgi.uni-muenster.de GPG key ID 0xAC227795


_______________________________________________
Geostatistics mailing list
[hidden email]
http://list.52north.org/mailman/listinfo/geostatistics
http://geostatistics.forum.52north.org

signature.asc (501 bytes) Download Attachment
Loading...