HI,
A possible guess ( with no data):
for (i in 1:7) {
subs <- data$skin_color==levels(data$skin_color)[i]
line<-lm(body_weight~body_length, data=subset(data, subset=subs)) #closing
parentheses
abline(line,col=c("yellow","chocolate1","darkorange2",
"red3","saddlebrown","coral4","grey38")[i],lwd=2)
}
A.K.
----- Original Message -----
From: Elaine Kuo <elaine.kuo...@gmail.com>
To: r-help@r-project.org
Cc:
Sent: Monday, January 7, 2013 8:23 PM
Subject: [R] error in a abline loop
Hello
I have data of body length and body weight of people of different skin colors.
I tried to write a code to plot body length and body weight according
to the skin colors.
(Thanks for Petr's advice so far.)
A loop is used but an error shows up in the following code.
It says:
unexpected '}' in
"
"red3","red3","saddlebrown","coral4","chocolate4","darkblue","navy","grey38")[i],lwd=2)
}"
Please kindly advise how to modify the code.
Thank you.
The code
data <-read.csv("H:/skincolor.csv",header=T)
# graph
par(mai=c(1.03,1.03,0.4,0.4))
plot(data$body_weight, data$body_length,
xaxp=c(0,200,4),
yaxp=c(0,200,4),
type="p",
pch=1,lwd=1.0,
cex.lab=1.4, cex.axis=1.2,
font.axis=2,
cex=1.5,
las=1,
bty="l",col=c("yellow","chocolate1","darkorange2",
"red3","saddlebrown","coral4","grey38")[as.numeric(data$skin_color)])
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
##
for (i in 1:7) {
subs <- data$skin_color==levels(data$skin_color)[i]
line<-lm(body_weight~body_length, data=subset(data, subset=subs),
abline(line,col=c("yellow","chocolate1","darkorange2",
"red3","saddlebrown","coral4","grey38")[i],lwd=2)
}
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