plotCI.reg: Plots a simple linear regression along with confidence and...

In asbio: A Collection of Statistical Tools for Biologists

Plots a simple linear regression along with confidence and prediction intervals.

Description

Plots the fitted line from a simple linear regression (y ~ x) and (if requested) confidence and prediction intervals.

Usage

plotCI.reg(x, y, conf = 0.95, CI = TRUE, PI = TRUE, resid = FALSE, reg.col = 1, 
CI.col = 2, PI.col = 4, reg.lty = 1, CI.lty = 2, PI.lty = 3, reg.lwd = 1, 
CI.lwd = 1, resid.lty = 3, resid.col = 4,...)

Arguments

x	The explanatory variable, a numeric vector.
y	The response variable, a numeric vector
conf	The level of confidence; 1 - P(type I error)
CI	Logical; should the confidence interval be plotted?
PI	Logical; should the prediction interval be plotted?
resid	Logical; should residuals be plotted?
reg.col	Color of the fitted regression line.
CI.col	Color of the confidence interval lines.
PI.col	Color of the prediction interval lines.
reg.lty	Line type for the fitted regression line.
CI.lty	Line type for the confidence interval.
PI.lty	Line type for the confidence interval.
reg.lwd	Line width for the regression line.
CI.lwd	Line widths for the confidence and prediction intervals.
resid.lty	Line width for the regression line.
resid.col	Line color for residual lines.
...	Additional arguments from plot

Value

Returns a plot with a regression line and (if requested) confidence and prediction intervals

Author(s)

Ken Aho

See Also

plot, predict

Examples

y<-c(1,2,1,3,4,2,3,4,3,5,6)
x<-c(2,3,1,4,5,4,5,6,7,6,8)
plotCI.reg(x,y)

asbio documentation built on May 29, 2024, 5:57 a.m.