The data (Mielke and Iyer 1982) are from a mine
reclamation study comparing oven-dried biomass (gm) of 3 species
of shrubs in 6 treatments and 3 blocks (different plots).
Usage
data(mrbp1)
Format
A data frame with 18 observations on the following 5 variables.
trtmt
an indicator of the treatment group:
1 = no fertilizer, 2 = low fertilizer, 3 = high fertilizer,
4 = mulch and no fertilizer, 5 = mulch and low fertilizer,
and 6 = mulch and high fertilizer.
block
The blocking indicator for the three plots.
spp1
Dried biomass for species 1.
spp2
Dried biomass for species 2.
spp3
Dried biomass for species 3.
Source
Mielke, P.W. and H.K. Iyer. 1982. Permutation techniques for analyzing multi-response data from randomized block experiments. Communications in Statistics - Theory and Methods11, 1427–1437.
Examples
str(mrbp1)
par(mfrow = c(2,1),mar = c(4,4,2,2))
plot(rep(mrbp1$trtmt,times = 3)+rep(c(-.3,0,.3),each = 18),c(mrbp1$spp1,mrbp1$spp2,
mrbp1$spp3),col = rep(c("blue","red","black"),each = nrow(mrbp1)),
pch = rep(c(19,16,17),each = nrow(mrbp1)),
xlab = "Treatment Group Indicator",cex = 1.5,ylab = "Dried Biomass",
main = "Dried Biomass for each species and treatment group")
abline(v = seq(from = 1.5,to = 5.5,by = 1),lty = "dashed",col = "grey")
legend(x = .65, y = 23, legend = c("Species 1","Species 2","Species 3"),
col = c("blue","red","black"),
pch = c(19,16,17),bg = "white")
par(mar = c(5,4,3,2))
plot(rep(mrbp1$block,times = 3)+rep(c(-.3,0,.3),each = 18),
c(mrbp1$spp1,mrbp1$spp2,mrbp1$spp3),col = rep(c("blue","red","black"),
each = nrow(mrbp1)),pch = rep(c(19,16,17),each = nrow(mrbp1)),
xlab = "Block Indicator",cex = 1.5,ylab = "Dried Biomass",
main = "Dried Biomass for each species and block",xaxp = c(1,3,2))
abline(v = seq(from = 1.5,to = 5.5,by = 1),lty = "dashed",col = "grey")
legend(x = .8, y = 24, legend = c("Species 1","Species 2","Species 3"),
col = c("blue","red","black"),
pch = c(19,16,17),bg = "white")
Results
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
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Type 'license()' or 'licence()' for distribution details.
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Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> library(Blossom)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Blossom/mrbp1.Rd_%03d_medium.png", width=480, height=480)
> ### Name: mrbp1
> ### Title: Variation in oven-dried biomass of shrubs
> ### Aliases: mrbp1
> ### Keywords: datasets
>
> ### ** Examples
>
> str(mrbp1)
'data.frame': 18 obs. of 5 variables:
$ trtmt: int 1 1 1 2 2 2 3 3 3 4 ...
$ block: int 1 2 3 1 2 3 1 2 3 1 ...
$ spp1 : num 0.33 2.5 1 6.67 18.67 ...
$ spp2 : num 1 0.83 0.5 5 0.17 0.5 8.5 1.67 3.33 8 ...
$ spp3 : num 2.17 4.33 2.33 2 2.83 2 2.17 2.17 2 1.33 ...
>
> par(mfrow = c(2,1),mar = c(4,4,2,2))
> plot(rep(mrbp1$trtmt,times = 3)+rep(c(-.3,0,.3),each = 18),c(mrbp1$spp1,mrbp1$spp2,
+ mrbp1$spp3),col = rep(c("blue","red","black"),each = nrow(mrbp1)),
+ pch = rep(c(19,16,17),each = nrow(mrbp1)),
+ xlab = "Treatment Group Indicator",cex = 1.5,ylab = "Dried Biomass",
+ main = "Dried Biomass for each species and treatment group")
>
> abline(v = seq(from = 1.5,to = 5.5,by = 1),lty = "dashed",col = "grey")
> legend(x = .65, y = 23, legend = c("Species 1","Species 2","Species 3"),
+ col = c("blue","red","black"),
+ pch = c(19,16,17),bg = "white")
>
> par(mar = c(5,4,3,2))
> plot(rep(mrbp1$block,times = 3)+rep(c(-.3,0,.3),each = 18),
+ c(mrbp1$spp1,mrbp1$spp2,mrbp1$spp3),col = rep(c("blue","red","black"),
+ each = nrow(mrbp1)),pch = rep(c(19,16,17),each = nrow(mrbp1)),
+ xlab = "Block Indicator",cex = 1.5,ylab = "Dried Biomass",
+ main = "Dried Biomass for each species and block",xaxp = c(1,3,2))
>
> abline(v = seq(from = 1.5,to = 5.5,by = 1),lty = "dashed",col = "grey")
> legend(x = .8, y = 24, legend = c("Species 1","Species 2","Species 3"),
+ col = c("blue","red","black"),
+ pch = c(19,16,17),bg = "white")
>
>
>
>
>
> dev.off()
null device
1
>