Diffogram: Plot Pairwise Differences

In sasLM: 'SAS' Linear Model

Plot Pairwise Differences

Description

Plot pairwise differences by a common method.

Usage

  Diffogram(Formula, Data, Term, conf.level=0.95, adj="lsd", ...)

Arguments

Formula	a conventional formula for a linear model
Data	a data.frame to be analyzed
Term	a factor name to be estimated
conf.level	confidence level of the confidence interval
adj	"lsd", "tukey", "scheffe", "bon", or "duncan" to adjust p-value and confidence limit
...	arguments to be passed to plot

Details

This usually shows the shortest interval. It corresponds to the PDIFF option of SAS PROC GLM. For the adjustment method "dunnett", see the PDIFF function.

Value

no return value, but a plot on the current device

Author(s)

Kyun-Seop Bae [e-mail]

See Also

LSM, PDIFF

Examples

  Diffogram(uptake ~ Type*Treatment + as.factor(conc), CO2, "as.factor(conc)")

sasLM documentation built on June 15, 2026, 9:07 a.m.