[R] histogram

[Peter Dalgaard]

jim holtman wrote:
> It is hard to respond without reproducible examples.  Do
> str(dat[2,23:46]) and see what it reports.  My guess is that one of
> the columns is not numeric.  Find out which one it is, fix it and then
> try 'hist' again.
>   
No, this will be wrong whatever the data are. The problem is that
dat[2,23:46] is a one-row dataframe, i.e. a list, which is not a numeric
vector. Possibly
hist(unlist(dat[2,23:46])) is what is wanted. I don't think the boxplot
is "fine" either, except in the sense that it does not give an error
(try boxplot(airquality[2,])).

> On Fri, Jun 13, 2008 at 10:21 AM, Paul Adams <pma3622 at yahoo.com> wrote:
>   
>> Hello everyone,
>> I am trying to plot a histogram from the following code:
>> dat<-read.table(file="C:\\Documents and Settings\\Owner\\My Documents\\Yeast\\Yeast.txt",header=T,row.names=1)
>> file.show(file="C:\\Documents and Settings\\Owner\\My Documents\\Yeast\\Yeast.txt")
>> x<-dat[2,23:46]
>> y=mean(x,trim=0,na.rm=T)
>> colMeans(dat[2,23:46])
>> boxplot(dat[2,23:46])
>> hist(dat[2,23:46])
>> The box plot is fine but the histogram keeps giving me the error that x
>> must be numeric.I am not sure what is wrong here with the instructions
>> for the histogram plot.
>> Any help would be appreciated
>> Paul
>>
>>
>>
>>        [[alternative HTML version deleted]]
>>
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>> and provide commented, minimal, self-contained, reproducible code.
>>
>>     
>
>
>
>   


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