Generates a Hotelling's T2 Graph

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Description

Generates a Hotelling's T2 Graph both mvdareg and mvdapca objects.

Usage

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T2(object, ncomp = object$ncomp, phase = 1, conf = c(.95, .99))

Arguments

object

an object of class mvdareg or mvdapca.

ncomp

the number of components to include in the calculation of Hotelling's T2.

phase

designates whether the confidence limits should reflect the current data frame, phase = 1 or future observations, phase = 2.

conf

the confidence level(s) to use for upper control limit.

Details

T2 is used to generates a Hotelling's T2 graph both PLS and PCA models.

Value

The output of T2 is a graph of Hotelling's T2 and a data frame listing the T2 values.

Author(s)

Nelson Lee Afanador (nelson.afanador@mvdalab.com)

References

Hotelling, H. (1931). "The generalization of Student's ratio". Annals of Mathematical Statistics 2 (3): 360:378.

Examples

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data(Penta)
## Number of bootstraps set to 500 to demonstrate flexibility
## Use a minimum of 1000 (default) for results that support bootstraping
mod1 <- plsFit(log.RAI ~., scale = TRUE, data = Penta[, -1], 
               ncomp = 2, validation = "oob", boots = 500)
T2(mod1, ncomp = 2)

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