stripchart by groups in R

Question

I am still a newbie to R and would like to ask for help in graphing stripcharts.

stripchart(Study_intensive$AGE, method="stack",
at=c(0.05), pch=20, cex=2, xaxt="n", frame.plot=F, main= "Age Range in weight group(yr)")
axis(1, at=seq(0, 75, by=5) , labels= seq(0, 75, by=5),  
cex.axis=0.75)

This is my code at the moment and I am trying to group it by another column called "weightclass"; Basically using another color for each weightclass. "weightclass" has 4 values: 1, 2, 3, 4 respectively. Is there something I can do to easily do so?

Thank you for the help!

desc · Accepted Answer · 2016-09-21T08:59:21.887

2

Here's an example using mtcars:

library(RColorBrewer)
testColor=brewer.pal(6, 'RdBu')
stripchart(mtcars$mpg~mtcars$gear, col=testColor, method="stack", pch=20, cex=2, xaxt="n", frame.plot=F, main= "Age Range in weight group(yr)")
axis(1, at=seq(0, 75, by=5) , labels= seq(0, 75, by=5), cex.axis=0.75)

EDIT-1

With ggplot there's a bit of a way to get what you asked for all in one strip and colored by group:

library(ggplot2)
library(RColorBrewer)
testColor=brewer.pal(6, 'RdBu')
mtcars$color=testColor[mtcars$gear] #to get the colors your after
mtcars$strip=1 #to get them into a single strip
ggplot(mtcars, aes(x=strip, y=mpg, color=color)) +
  geom_jitter(position=position_jitter(0.2)) + xlim(0, 2)

edited Sep 21 '16 at 08:59

answered Sep 21 '16 at 00:47

desc

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Thank you so much!! is there a way for the to have the different gears overlap w/ one another? – Monklife Sep 21 '16 at 05:13
@Monklife, try the edit with `ggplot`, if that works then you should be all set. – desc Sep 21 '16 at 09:00

stripchart by groups in R

1 Answers1