Unknown variables

[ccimarp1990]

Hi, I would like to know what are the variables Xe, Xc, yc and ye.
Thanks!

[capaulson]

In co-Kriging, these are sample points and observations for the cheap and expensive data sets (c and e respectively). Xe, for example, holds coordinates of the expensive data points, while ye hold the observed value at each coordinate. Doe that help?

[ccimarp1990]

In my case, I have several weather stations with its coordinates. Where could I enter it? I need some explanation in the example, please.
What is the formula define for cheap(X) and expensive(X)?
I would like to introduce the MDT (Digital Terrain Model) as a aditional variable to interpolate the different climatic variables influence by the topography. Are you include this parameter in your code?

Thanks!