diffograph {agricolae} | R Documentation |
Plotting the multiple comparison of means
Description
It plots bars of the averages of treatments to compare. It uses the objects generated by a procedure of comparison like LSD (Fisher), duncan, Tukey (HSD), Student Newman Keul (SNK), Scheffe, Ryan, Einot and Gabriel and Welsch (REGW), Kruskal Wallis, Friedman and Waerden.
Usage
diffograph(x, main=NULL,color1="red",color2="blue",color3="black",
cex.axis=0.8,las=1,pch=20,bty="l",cex=0.8,lwd=1,xlab="",ylab="",...)
Arguments
x |
Object created by a test of comparison, group=FALSE |
main |
The main title (on top) |
color1 |
non significant color |
color2 |
significant color |
color3 |
center line color |
cex.axis |
parameters of the plot() |
las |
parameters of the plot() |
pch |
parameters of the plot() |
bty |
parameters of the plot() |
cex |
parameters of the plot() |
lwd |
parameters of the plot() |
xlab |
parameters of the plot() |
ylab |
parameters of the plot() |
... |
Other parameters of the function plot() |
Details
The graph.diff function should be used for functions: LSD, duncan, SNK, scheffe, REGW, HSD, kruskal, friedman and waerden test.
Value
x |
list, object comparison test |
Author(s)
Felipe de Mendiburu
References
Multiple comparisons theory and methods. Departament of statistics the Ohio State University. USA, 1996. Jason C. Hsu. Chapman Hall/CRC
See Also
LSD.test
, HSD.test
, duncan.test
, SNK.test
,
scheffe.test
, REGW.test
, kruskal
,friedman
,
waerden.test
Examples
# Example 1
library(agricolae)
data(sweetpotato)
model<-aov(yield~virus,data=sweetpotato)
x<- LSD.test(model,"virus",alpha=0.01,group=FALSE)
diffograph(x,cex.axis=0.8,xlab="Yield",ylab="")
# Example 2
x<- REGW.test(model,"virus",alpha=0.01,group=FALSE)
diffograph(x,cex.axis=0.6,xlab="Yield",ylab="",color1="brown",color2="green")