spaMM (version 4.5.0)

stripHLfit: Reduce the size of fitted objects

Description

Large matrices and other memory-expensive objects may be stored in a fit object. This function removes them in order to reduce the size of the object, particularly when stored on disk. In principle, the removed objects can be regenerated automatically when needed (e.g., for a predict()).

Usage

stripHLfit(object, ...)

Value

The input fit objects with some elements removed.

Arguments

object

The result of a fit (an object of class HLfit).

...

Further arguments, not currently used.

Examples

if (FALSE) {
## rather unconvincing example : quantitative effect is small.

# measure size of saved object:
saveSize <- function (object,...) {
    tf <- tempfile(fileext = ".RData")
    on.exit(unlink(tf))
    save(object, file = tf,...)
    file.size(tf)
  }
data("Loaloa")  
lfit <- fitme(cbind(npos,ntot-npos)~elev1+elev2+elev3+elev4+maxNDVI1+seNDVI
                   +Matern(1|longitude+latitude), method="HL(0,1)",
              data=Loaloa, family=binomial(), fixed=list(nu=0.5,rho=1,lambda=0.5))
saveSize(lfit)                 
pfit <- predict(lfit,newdata=Loaloa,variances=list(cov=TRUE)) # increases size!
saveSize(lfit)
lfit <- stripHLfit(lfit)
saveSize(lfit)
}