[R] Quick fix formatting

jim holtman jholtman at gmail.com
Mon Apr 7 19:04:32 CEST 2008

I would guess that your first column is factors.  So an 'str' on the
dataframe to see what it is made of.  You can convert them to numeric:

df[[1]] <- as.numeric(as.character(df[[1]]))

See if you get any NAs for non-numerics that may be in that column

On 4/7/08, Jamie Ledingham <jamie.ledingham at newcastle.ac.uk> wrote:
> Hi all,
> I'm hoping there's a quick fix for this.
> I have two data frames and am running a loop to match similar rows.
> However the matching is not working well, and I suspect it is because of
> the different formats of columns.  For example, in col. 1 of dataframe 1
> the nummbers are formatted as 1,2,3,4,5,6,7,8,9...31  However in col. 1
> dataframe 2 the numbers are 01,02,03,04,05,06,07,08,09...31  After
> investigation it seems only the numbers below 10  do not match up well
> (i.e. those with a 0 in).
> My question is: is there a quick fix so I can convert the first set of
> numbers into the format of the second?  I could write a loop and if
> statement but that seems a lot and I thought there must be an easier way
> out there.  However having searched the archives, nothing has appeared.
> Thanks
> Jamie
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Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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