不ed help with idw

[Sheikhkenneh]

不ed assistance with this question I was given

[DavidPike]

the question is asking for the raster value at the intersection of 4 raster cells? Not your fault at all, but that confuses me no end.

[Sheikhkenneh]

I believe so. I have no idea what points to use or how to find the distance with the things given .

[DavidPike]

I think@DanPattersoncan offer some academic input on this one.

[DanPatterson]

That is merely a cartesian plot of the points, not raster cells.

The x and y axis show spacings of 1 unit for distance, so for a horizontal or vertical movement you are moving 1 distance unit. a diagonal movement would represent sqrt(2) (pythagorean theorem).

You must decide which points to include given that the distance values must be <= 2.

Pick the points to include and use the equation to sum the distance values etc...

Since it is a problem presumably for a course, I will leave the solution to you... make sure you show your work.

[SteveLynch]

互动也是一个巨大的地质统计学向导teaching tool. I've hidden the answer as this is an assignment

[Sheikhkenneh]

 did I do this correctly?

[DanPatterson]

Sorry... I stopped grading assignments when I retired