funData (version 1.3-9)

nObsPoints: Get the number of observation points

Description

This functions returns the number of observation points in an object of class funData, multiFunData or irregFunData.

Usage

nObsPoints(object)

Value

The number of observation points in object. See Details.

Arguments

object

An object of class funData, multiFunData or irregFunData.

Warning

Do not confound with nObs, which returns the number of observations (i.e. the number of observed functions) in an object of a functional data class.

Details

Depending on the class of object, the function returns different values:

• If object is of class funData, the function returns a vector of length dimSupp(object), giving the number of observations in each dimension.

• If object is of class multiFunData, the function returns a list of the same length as object, where the j-th entry is a vector, corresponding to the observations point of object[[j]].

• If object is of class irregFunData, the function returns an array of length nObs(object), where the j-th entry corresponds to the number of observations in the j-th observed function.

See Also

irregFunData, extractObs

Examples

# Univariate (one-dimensional)
object1 <- funData(argvals = 1:5, X = rbind(1:5, 6:10))
nObsPoints(object1)

# Univariate (two-dimensional)
object2 <- funData(argvals = list(1:5, 1:6), X = array(1:60, dim = c(2, 5, 6)))
nObsPoints(object2)

# Multivariate
multiObject <- multiFunData(object1, object2)
nObsPoints(multiObject)

# Univariate (irregular)
irregObject <- irregFunData(argvals = list(1:5, 2:4), X = list(2:6, 3:5))
nObsPoints(irregObject)