residual.plot {arm}R Documentation

residual plot for the observed values

Description

Plots the residual of observed variable.

Usage

residual.plot(Expected, Residuals, sigma, main = deparse(substitute(Expected)), col.pts = "blue", col.ctr = "red", col.sgm = "black", cex = 0.5, gray.scale = FALSE, xlab = "Predicted", ylab = "Residuals", ...)

Arguments

Expected Expected value.
Residuals Residual value.
sigma Standard error.
main main for the plot. See plot for detail.
col.pts Color of the points.
col.ctr Color of the line at zero.
col.sgm Color of standard error line.
cex A numerical value giving the amount by which plotting text and symbols should be magnified relative to the default. See par for detail.
gray.scale If TRUE, makes the plot into black and white. This option overwrites the color specification. Default is FALSE.
xlab Label for x axis.
ylab Label for y axis.
... Additional parameters passed to plot function.

Value

Plot to visualize pattern of residulal value for the expected value.

Author(s)

Masanao Yajima yajima@stat.columbia.edu, M.Grazia Pittau grazia@stat.columbia.edu

Examples

old.par <- par(no.readonly = TRUE)

x <- rnorm(100)
y <- rnorm(100)
fit <- lm(y~x)
y.hat <- fitted(fit)
u <- resid(fit)
sigma <- sigma.hat(fit)
residual.plot(y.hat, u, sigma)

par(old.par)

[Package arm version 1.2-8 Index]