gRim (version 0.1.2)

CGstats: Mean, covariance and counts for grouped data

Description

CGstats provides what corresponds to calling cow.wt on different strata of data where the strata are defined by the combinations of factors in data.

Usage

CGstats(object, varnames = NULL, homogeneous = TRUE, simplify = TRUE)
## S3 method for class 'data.frame':
CGstats(object, varnames = NULL, homogeneous = TRUE, simplify = TRUE)

Arguments

object

varnames

homogeneous

simplify

Value

• A list whose form depends on the type of input data and the varnames.

See Also

cov.wt

Examples

data(milkcomp)
CGstats(milkcomp)
CGstats(milkcomp, c(1,2))
CGstats(milkcomp, c("lactime","treat"))
CGstats(milkcomp, c(3,4))
CGstats(milkcomp, c("fat","protein"))

CGstats(milkcomp, c(2,3,4), simplify=FALSE)
CGstats(milkcomp, c(2,3,4), homogeneous=FALSE)
CGstats(milkcomp, c(2,3,4), simplify=FALSE, homogeneous=FALSE)