Re: [R] reading csv-data

From: Thomas Lumley <tlumley_at_u.washington.edu>
Date: Sat 18 Jun 2005 - 00:57:19 EST

On Fri, 17 Jun 2005, Johanna Sundvik wrote:
> However, this "Mean1" is categorical when it should be real numbers.
>
>> Mean1
> [1] 4.4332 8.5113 35.1624 9.1693 2.974 65.1578 43.2241 3.1278 5.3364
> Levels: 2.974 3.1278 35.1624 4.4332 43.2241 5.3364 65.1578 8.5113 9.1693
>
> Why R does not understand that this should be real numbers? What am I doing
> wrong here? Thanks for your help.
>

Your files must have some entries that are not numbers, such as "." or something. R then can't tell that the field is supposed to be numeric. This may happen with missing data, in which case the na.strings= argument can be used to tell R how missing data are specified.

You can convert the data to numeric as described in FAQ 7.10

         -thomas



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 18 01:19:29 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:32:48 EST