I Exercise 07

Last updated: 2022-02-21 17:14:13

I.1 Question 1

• Create IDW, OK and UK interpolation models of annual rainfall, using 1-km elevation as a covariate in UK, and using only those stations that to the north of 31 degrees latitude and where elevation value isn’t missing. Follow the code in Sections 12.1–12.4.
• Calculate and print the RMSE values (see section 12.5) from Leave-One-Out Cross validation of interpolating annual rainfall using the three methods (IDW, OK, UK).

rmse_idw
## [1] 80.02662
rmse_ok
## [1] 55.12671
rmse_uk
## [1] 36.21741

(100 points)