RVAideMemoire (version 0.9-83-7)

ind.contrib: Individual contributions in regression

Description

Computes difference in regression parameters when each individual is dropped, expressed in proportion of the whole regression coefficients. The function deals with lm (including glm) and least.rect models.

Usage

ind.contrib(model, print.diff = FALSE, graph = TRUE, warning=25)

Value

coefficients

coefficients of each computed regression.

coefficients.diff

difference in coefficients between each computed regression and the whole regression.

coefficients.prop

difference in coefficients expressed in proportion of the whole regression coefficients.

Arguments

model

model (of class "lm" or "least.rect").

print.diff

logical. If TRUE results are printed.

graph

logical. If TRUE results are returned in a graphical way.

warning

level of graphical warning.

Author

Maxime HERVE <[e-mail]>

See Also

lm.influence, least.rect

Examples

x <- 1:30
y <- 1:30+rnorm(30,0,4)
model1 <- lm(y~x)
model2 <- least.rect(y~x)
ind.contrib(model1)
ind.contrib(model2)