Re: [R] getting numeric arrays from data frame

, Ontario, Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > project.org] On Behalf Of Mark Farnell > Sent: April-06-08 11:15 PM > To: r-help@r-project.org > Subject: [R] getting numeri

Re: [R] getting numeric arrays from data frame

try hist(foo[,5]) plot(foo[,c(1,5)]) HTH > Currently I invoke: > > foo <- read.table("foo.data", header=TRUE) > > to read a table into foo > > Then when I try to plot a histogram out of the 5th column of foo: > > hist(foo[5]) > > It fails and it says: > > Error in hist.default(foo[5]) : '

[R] getting numeric arrays from data frame

Currently I invoke: foo <- read.table("foo.data", header=TRUE) to read a table into foo Then when I try to plot a histogram out of the 5th column of foo: hist(foo[5]) It fails and it says: Error in hist.default(foo[5]) : 'x' must be numeric Then I tried: >typeof(foo[5]) [1] "List" So how c