crossval: Cross-validation

In metno/esd.test: Climate analysis and empirical-statistical downscaling (ESD) package for monthly and daily data.

Description

Applies a cross-validation of DS results, using the same strategy as in the DS exercise. Any step-wise screening is applied for each iteration independently of that used to identify the subset of skillful predictors in the original analysis. The model coeffiecients (beta) is saved for each iteration, and both correlation and root-mean-squared-error are returned as scores.

Usage

crossval(x, m=5, ...)
crossval.ds(x, m=5, ...)
crossval.list(x, m=5, ...)

Arguments

x	The results from DS.
m	window with - leave m-out for each iteration.

Value

Cross-validation object.

Author(s)

R.E. Benestad

Examples

data(Oslo)
t2m <- t2m.NCEP(lon=c(-20,40),lat=c(45,65))
eof <- EOF(t2m,1)

ds <- DS(Oslo,eof)
xv <- crossval(ds)
plot(xv)

metno/esd.test documentation built on May 22, 2019, 7:49 p.m.