3d scatter plot using R

January 6, 2010

By er

(This article was first published on stattler.com - R, and kindly contributed to R-bloggers)

The other day I saw a three dimensional scatterplot in Montgomery's Regression book. I wanted to redraw the graph using the provided data. A simple google search revealed that there is a package called scatterplot3d. The scatterplot3d() can be used to draw a 3-dimensional scatter plot. Here is what the steps are:

Download and install the package from your nearest CRAN.
Load the package using the command library(scatterplot3d)

Use the attached file to run the following code in R

d1<-read.table("65-555-reg.txt", header=T)
d2<-data.frame(time=c(d1[,1]), cases=c(d1[,2]), distance=c(d1[,3]))
attach(d2)
scatterplot3d(cases, distance, time, angle=20, col.axis="blue",
col.grid="lightblue", main="Three-dimensional scatterplot", 
pch=21, box=F, cex.symbols=2)
detach(d2)

RESULT

DATA
Data: Copy and paste in a file and save it as 65-555-reg.txt

time	 cases	distance
16.68	7	560
11.5	3	220
12.03	3	340
14.88	4	80
13.75	6	150
18.11	7	330
 8	2	110
17.83	7	210
79.24	30	1460
21.5	5	605
40.33	16	688
21	10	215
13.5	4	255
19.75	6	462
24	9	448
29	10	776
15.35	6	200
19	7	132
9.5	3	36
35.1	17	770
17.9	10	140
52.32	26	810
18.75	9	450
19.83	8	635
10.75	4	150

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