CODEWITHSUNDEEP
r
SS_11
SS_11

Reputation: 49

Print five point summary values(Min,Q1,Median,Q3,Max) on the boxplot

I am trying to create a simple boxplot with all the labels. I have a dataset that says about the Number of customer Visits .It has two columns; Customer ID and AvgVists

custID       AvgVisits
 1            10
 2             4
 3             12

I want a simple boxplot that is horizontally oriented and displays the five summary points on the graph, with nice color and axes. I am able to find the heading, make it horizontally oriented, unable to report the summary numbers on the graph itself.

Upvotes: 0

Views: 3527

Answers (2)

dardisco
dardisco

Reputation: 5274

@Henriks link seems to answer your question. This answer may also be helpful in terms of applying annotation to multiple boxplots on the same graph.

For completeness:

boxplot() will calculate the no.s (same as fivenum() ) to plot, which you can verify by storing the result:

AvgVisits <- c(10,4,12)
b1 <- boxplot(AvgVisits)
b1$stats == fivenum(AvgVisits)

Here's a solution with ggplot2 which you may find appealing. Change the values of aes(x=) to move the position up/down (as co-ordinates already flipped).

require(ggplot2)
q1 <- qplot(x=1, b1$stats, geom = "boxplot")
q1 +coord_flip() +
    geom_text(aes(x=1.1,y=b1$stats,label=b1$stats)) +
    opts(
        axis.text.x=theme_blank(),
        axis.text.y=theme_blank(),
        axis.title.x=theme_blank(),
        axis.title.y=theme_blank()
        )

Giving:

The result

Upvotes: 1

Matt
Matt

Reputation: 646

Use the text() command, with the format text(location, "print this text", pos). pos should be one of the following: 1=below, 2=left, 3=above, 4=right. If you need further assistance please include the code you have so far. More here: http://www.statmethods.net/advgraphs/axes.html

Upvotes: 0

Related Questions