Notched box plots
Here is some simple code on doing Notched box plots. If you want to read more about notched box plots see Notched Box Plots
Notes Read 1st:
lines with # in front is for your information and will be ignored by R.
You will need make a dir on your C drive named R.
You will need to save the attached spreadsheet to that dir.
#SIMPLE CODE
#set the dir to where you mydata is
setwd("c:/R")
#Load your mydata. The mydata is in a spreadsheet named nd-spreadsheet and we are going to call it mydata in R. NOTE a copy of the data is attached below on this web page.
mydata <- read.table("MCNP-Rain-pH.csv", header=TRUE, sep=",",)
#makes the notched box plot. "mydata" = the name of the mydata in R.
boxplot(mydata, notch=TRUE,
# Gives the title and axis names
main="Mammoth Cave National Park Rainfall pH", xlab="Years", ylab="axis label = pH",
#Sets the colors
col=(c("gold","darkgray", "darkorchid1", "cyan", "white", "red","limegreen", "magenta", "chartreuse1", "hotpink1")))
# Done
Some other useful inforation
require(datasets)
boxplot(USJudgeRatings,
horizontal = TRUE, # sets the plot horz like a distribution curve.
notch = TRUE,
col = "gray",
ylim = c(0,10), #limits / set range of y
boxwex = 0.5, #sets with bo box
whisklty = 1, #sets line type
staplelty = 4, #sests wisker type
outpch = 16, #sets the outlier sype
outcol = "Red",#sets the outlier color
xlab = "Lawyers' Ratings")