https://github.com/cran/fields
Tip revision: 67f03a547c0c81321ff18188017dd3becb0e7797 authored by Douglas Nychka on 16 December 2016, 22:26:03 UTC
version 8.10
version 8.10
Tip revision: 67f03a5
fastTpsPredict.test.R
library( fields)
options(echo=FALSE)
test.for.zero.flag<-1
set.seed(123)
nc<- 10
center<- matrix( runif(nc*2), nc,2)
grid.list<- list( x= seq(0,1,,10), y=seq( 0,1,,15))
coef<- rnorm( nc)
delta<- .3
out<- multWendlandGrid( grid.list,center, delta, coef)
xg<- make.surface.grid( grid.list)
test<- Wendland2.2( rdist( xg, center)/delta)%*% coef
test.for.zero.flag<-1
test.for.zero( test, out, tag="Comparing FORTRAN grid eval to matrix vector multiplication")
# testing predictSurface function
nc<- 100
set.seed(12)
x<- matrix( runif(nc*2), nc,2)
y<- rnorm( nc)
delta<- .2
obj<- fastTps( x,y, theta=delta, lambda=.1)
grid.list<- list( x= seq(0,1,,3), y=seq( 0,1,,4))
xg<- make.surface.grid( grid.list)
look0<- c(predict( obj, xg))
look1<- predictSurface( obj, grid.list, extrap=TRUE)
look2<- predict.mKrig( obj, xg)
test.for.zero( look0, c(look1$z), tag="testing PredictSurface and predict.fastTps")
test.for.zero( look0, c(look2), tag="testing PredictSurface with slower mKrig predict")
# new y
set.seed(123)
ynew<- rnorm( nc)
look0<- c(predict( obj, xg, ynew=ynew))
look1<- predictSurface( obj, grid.list, ynew=ynew, extrap=TRUE)
look2<- c(predict(fastTps( x,ynew, theta=delta, lambda=.1) , xg, ynew=ynew))
test.for.zero( look0, look2,tag="predict with ynew")
test.for.zero( look0, c(look1$z), tag="predictSurface with ynew")
options( echo=TRUE)
#