del.phdata: delete phenotypes from phdata
In GenABEL: genome-wide SNP association analysis

Description Usage Arguments Author(s) Examples

This function is used to delete certain phenotypes from phenotypic part (phdata) of an object of gwaa.data-class

1	del.phdata(data, what, all = FALSE)

`data`	an object of `gwaa.data-class`
`what`	which phenotypes (variables) to delete, expressed as (vector of) names (character) or integer (column of phdata data frame)
`all`	if 'all'=TRUE and 'what' is misisng, all phenotypes are deleted, and only the 'id' and 'sex' are kept

Yurii Aulchenko

require(GenABEL.data)
data(srdta)
phdata(srdta)[1:5,]
srdta <- del.phdata(srdta,"qt1")
phdata(srdta)[1:5,]
srdta <- del.phdata(srdta,all=TRUE)
phdata(srdta)[1:5,]