agricolae (version 1.1-5)

sp.plot: Splip-Plot analysis

Description

The variance analysis of a split plot design is divided into two parts: the plot-factor analysis and the sub-plot factor analysis.

Usage

sp.plot(block, pplot, splot, Y)

Arguments

block

replications

pplot

main-plot Factor

splot

sub-plot Factor

Y

Variable, response

Value

• block
  vector, numeric or character
• pplot
  vector, numeric or character
• splot
  vector, numeric or character
• Y
  vector, numeric

Details

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.

References

Statistical procedures for agricultural research. Kwanchai A. Gomez, Arturo A. Gomez. Second Edition. 1984.

See Also

ssp.plot, strip.plot, design.split, design.strip

Examples

library(agricolae)
data(plots)
attach(plots)
model<-sp.plot(block,A,B,yield)
detach(plots)
# with aov
plots[,1]<-as.factor(plots[,1])
AOV <- aov(yield ~ block + A*B + Error(block/A),data=plots)
summary(AOV)