Dear List,
I would like to create several graphs of similar data. I have x and y values
for several different individuals (in this case fish). I would like to plot
the x and y values for each fish separately. I can do it using a for loop, but
I think I should be using "apply". Please let me know what I am doing wrong,
or if there is a "better" way to do this. What I have is:
#Test data
dat<-data.frame(c(rep(1:10,4)),c(rep(1:10,4)),c(rep(c("Tony","Mike","Vicky","Fred"),each=10)))
names(dat)<-c("x","y","Name")
#Create function to plot x and y
myplot<-function() plot(dat$x,dat$y)
#Apply the function to each of the names
par(mfcol=c(2,2))
apply(dat,2,myplot,by=dat$Name) #Does not work - tried various versions
I would like separate plots for Tony, Mike, and Vicky. What is the best way to
do this?
Thank!
Tim
Tim Clark
Department of Zoology
University of Hawaii
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