predict.surface.se {funfits}R Documentation

Standard error predictions of surface

Usage

predict.surface.se(out, grid.list, chull.mask, extrap=F, ...)

Arguments

out An object from fitting a function to data.
grid.list A list with as many components as variables describing the surface. All components should have a single value except the two that give the grid points for evaluation. If the matrix or data frame has column names, these must appear in the grid list.
chull.mask To evaluate on a convex hull, NA's are assigned to outside the convex hull of the data
extrap Exaplolation beyond the range of the data.
... Other plotting parameters

Value

The usual list for making contour and perspective plots along with the component containing the grid list.

See Also

predict.surface, tps, krig, nnreg, persp, contour, grid.list

Examples

tps( BD[,1:4], BD$lnya)-> fit  # fit surface to data
list( KCl="x", MgCl2=mean(BD[,2]),KPO4="y", dNTP=mean(BD[,4]))-> grid
# make grid 
predict.surface.se(fit,grid) -> out.p  # evalute standard erro surface
# on a grid
surface(out.p) # perspective and contour plot of standard error surface 

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