criterio.cv {geospt} | R Documentation |
Cross-validation summaries
Description
Generate a data frame of statistical values associated with cross-validation
Usage
criterio.cv(m.cv)
Arguments
m.cv |
data frame containing: the coordinates of data, prediction columns,
prediction variance of cross-validation data points, observed values,
residuals, zscore (residual divided by kriging standard error), and
fold. If the |
Value
data frame containing: mean prediction errors (MPE), average kriging standard error (ASEPE), root-mean-square prediction errors (RMSPE), mean standardized prediction errors (MSPE), root-mean-square standardized prediction errors (RMSSPE), mean absolute percentage prediction errors (MAPPE), coefficient of correlation of the prediction errors (CCPE), coefficient of determination (R2) and squared coefficient of correlation of the prediction errors (pseudoR2)
Examples
library(gstat)
data(meuse)
coordinates(meuse) <- ~x+y
m <- vgm(.59, "Sph", 874, .04)
# leave-one-out cross validation:
out <- krige.cv(log(zinc)~1, meuse, m, nmax = 40)
criterio.cv(out)
# multiquadratic function
data(preci)
coordinates(preci) <- ~x+y
# predefined eta
tab <- rbf.tcv(prec~x+y,preci,eta=1.488733, rho=0, n.neigh=9, func="M")
criterio.cv(tab)