| sp.plot {agricolae} | R Documentation |
The variance analysis of a split plot design is divided into two parts: the plot-factor analysis and the sub-plot factor analysis.
sp.plot(block, pplot, splot, Y)
block |
replications |
pplot |
main-plot Factor |
splot |
sub-plot Factor |
Y |
Variable, response |
The split-plot design is specifically suited for a two-factor experiment on of the factors is assigned to main plot (main-plot factor), the second factor, called the subplot factor, is assigned into subplots.
ANOVA: Splip plot analysis
Felipe de Mendiburu
Statistical procedures for agricultural research. Kwanchai A. Gomez, Arturo A. Gomez. Second Edition. 1984.
ssp.plot, strip.plot, design.split,
design.strip
library(agricolae) data(plots) model<-with(plots,sp.plot(block,A,B,yield)) # with aov plots[,1]<-as.factor(plots[,1]) AOV <- aov(yield ~ block + A*B + Error(block/A),data=plots) summary(AOV)