grow: Add trees to an ensemble
In snpRF: Random Forest for SNPs to Prevent X-chromosome SNP Importance Bias

Description Usage Arguments Value Note Author(s) See Also Examples

Add additional trees to an existing ensemble of trees.

1 2	## S3 method for class 'snpRF' grow(x, how.many, ...)

`x`	an object of class `snpRF`, which contains a `forest` component.
`how.many`	number of trees to add to the `snpRF` object.
`...`	currently ignored.

An object of class snpRF, containing how.many additional trees.

The confusion, err.rate, mse and rsq components (as well as the corresponding components in the test component, if exist) of the combined object will be NULL.

Andy Liaw, with slight modifications for use with snpRF by Greg Jenkins

combine, snpRF

data(snpRFexample)
eg.rf <- snpRF(x.autosome=autosome.snps,x.xchrom=xchrom.snps,
               xchrom.names=xchrom.snps.names,x.covar=covariates, 
               y=phenotype,ntree=50, norm.votes=FALSE)
eg.rf <- grow(eg.rf, 50)
print(eg.rf)