[R] Problematic If-Else statement
macqueen1 at llnl.gov
Sat Sep 17 01:53:38 CEST 2011
It's probably not a sensible thing to do, but I'm going to guess.
With a name like "days_to_tumor_recurrence", I might expect numeric
(integer) values. But "null" and numeric don't mix.
as.numeric(c('24','null',23')) will return 24, NA, 23.
There may have been such a conversion in the preparation of the data.
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
On 9/16/11 8:54 AM, "David Winsemius" <dwinsemius at comcast.net> wrote:
>On Sep 16, 2011, at 11:49 AM, Ben Ganzfried wrote:
>> Thanks David. That works perfectly! Although, I'm still not sure I
>> understand entirely why the input file says the character value
>> "null" and yet, it actually is NA...
>Unless you show us the file as it would appear in a text editor, and
>how you brought it into R, and then processed it, we will not have
>any chance of commenting sensibly.
>> On Fri, Sep 16, 2011 at 11:35 AM, David Winsemius
>><dwinsemius at comcast.net
>> > wrote:
>> On Sep 16, 2011, at 11:08 AM, David Winsemius wrote:
>> On Sep 16, 2011, at 10:36 AM, Ben Ganzfried wrote:
>> Hi guys,
>> Second, I changed the first line of my code to:
>> tmp <-
>> I do not know why your original did not succeed but this code should
>> have been written:
>> tmp <-
>> Except that should have been a period.
>> David Winsemius, MD
>> West Hartford, CT
>David Winsemius, MD
>West Hartford, CT
> [[alternative HTML version deleted]]
>R-help at r-project.org mailing list
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.
More information about the R-help