Hi,
I'm just starting to learn how to use R and I'm trying to create a
histogram with 7 breaks. This is my code so far:
dat=read.table("titanic.csv",header=TRUE,sep=",",na.string=".")
age=dat$Age
breaks=seq(min(age),max(age),length=7)
hist(age,breaks,freq=FALSE)
I don't know why, but on the fourth line it always gives this error:
Error in if (from == to) rep.int(from, length.out) else as.vector(c(from, :
missing value where TRUE/FALSE needed
What am I doing wrong? I know the data itself does have a lot of NA
values for age, would this be the problem?
Thanks,
CZ
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Hi Casey, Yes, if there are missing values than you don't strictly speaking know what the minimum value is. You need to tell min() and max() to exclude missing, i.e., breaks=seq(min(age, na.rm=TRUE),max(age, na.rm=TRUE),length=7) Best, Ista On Fri, Aug 30, 2013 at 9:41 PM, Casey Zhang <casey1000 at gmail.com> wrote:> Hi, > > I'm just starting to learn how to use R and I'm trying to create a > histogram with 7 breaks. This is my code so far: > > dat=read.table("titanic.csv",header=TRUE,sep=",",na.string=".") > age=dat$Age > breaks=seq(min(age),max(age),length=7) > hist(age,breaks,freq=FALSE) > > I don't know why, but on the fourth line it always gives this error: > > Error in if (from == to) rep.int(from, length.out) else as.vector(c(from, : > missing value where TRUE/FALSE needed > > What am I doing wrong? I know the data itself does have a lot of NA > values for age, would this be the problem? > > > Thanks, > > CZ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.
Hello, Check the result of> min(c(1,2,3,4,NA,6))And read> ?minHope this helps, Pascal 2013/8/31 Casey Zhang <casey1000@gmail.com>> Hi, > > I'm just starting to learn how to use R and I'm trying to create a > histogram with 7 breaks. This is my code so far: > > dat=read.table("titanic.csv",header=TRUE,sep=",",na.string=".") > age=dat$Age > breaks=seq(min(age),max(age),length=7) > hist(age,breaks,freq=FALSE) > > I don't know why, but on the fourth line it always gives this error: > > Error in if (from == to) rep.int(from, length.out) else as.vector(c(from, > : > missing value where TRUE/FALSE needed > > What am I doing wrong? I know the data itself does have a lot of NA > values for age, would this be the problem? > > > Thanks, > > CZ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >[[alternative HTML version deleted]]