integrate function

Integrate functional data

Integrate all observations of a funData, irregFunData or multiFunData object over their domain.

integrate(object, ...)

Arguments

• object: An object of class funData, irregFunData or multiFunData.
• ...: Further parameters (see Details).

Returns

A vector of numerics, containing the integral values for each observation.

Details

Further parameters passed to this function may include:

• method: Character string. The integration rule to be used, passed to the internal function .intWeights. Defaults to "trapezoidal"

  (alternative: "midpoint").

• fullDom: Logical. If object is of class irregFunData, setting fullDom = TRUE

  extrapolates all functions linearly to the full domain before calculating the integrals. Defaults to FALSE. For details on the extrapolation, see extrapolateIrreg.

Warning

The function is currently implemented only for functional data with up to three-dimensional domains. In the default case, this function calls integrate .

Examples

# Univariate
object <- funData(argvals = 1:5, X = rbind(1:5, 6:10))
integrate(object)

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

# Multivariate
multiObject <- multiFunData(object, funData(argvals = 1:3, X = rbind(3:5, 6:8)))
integrate(multiObject)

See Also

funData, irregFunData, multiFunData