RVAideMemoire (version 0.9-35)

ind.contrib: Individual contributions in regression

Description

Compute 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)

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.

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.

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)