rfml (version 0.1.0)

cov.pop: Population Covariance

Description

Returns the population covariance of two variables, ml.data.frame fields.

Usage

cov.pop(x, y)

Arguments

x

a ml.data.frame field.

y

a ml.data.frame field

Value

The population covariance

Details

The function eliminates all pairs for which either the first element or the second element is empty. After the elimination, if the length of the input is 0, the function returns the empty sequence.

Examples

## Not run: 
#  library(rfml)
#  locConn <- ml.connect()
#  # create a ml.data.frame based on a search
#  mlIris <- ml.data.frame(locConn, collection = "iris")
#  # return the population covariance
#  cov.pop(mlIris$Sepal.Length, mlIris$Petal.Length)
# ## End(Not run)