boot.env.apweights {Renvlp}

Bootstrap for env.apweights

Description

Compute bootstrap standard error for the response envelope estimator that accommodates nonconstant variance.

Usage

boot.env.apweights(X, Y, u, B)

Arguments

X

Predictors. An n by p matrix, p is the number of predictors. The predictors can be univariate or multivariate, discrete or continuous.

Y

Multivariate responses. An n by r matrix, r is the number of responses and n is number of observations. The responses must be continuous variables.

u

Dimension of the envelope. An integer between 0 and r.

B

Number of bootstrap samples. A positive integer.

Details

This function computes the bootstrap standard errors for the regression coefficients in the envelope model with nonconstant variance by bootstrapping the residuals.

Value

The output is an r by p matrix.

bootse

The standard error for elements in beta computed by bootstrap.

Examples

data(concrete)
X <- concrete[, 1:7]
Y <- concrete[, 8:10]

## Not run: u <- u.env.apweights(X, Y)
## Not run: u

B <- 100
## Not run: bootse <- boot.env.apweights(X, Y, 1, B)
## Not run: bootse