works fine for me creating:
> state_pflt200 <- df$p_fatal <200
> df[state_pflt200, c("state.name","p_fatal")]
[1] state.name p_fatal
<0 rows> (or 0-length row.names)
>
considering that there were no values less than 200 in your data, the
result is correct.
So what is the problem?
On Sat, Nov 3, 2012 at 5:41 PM, Muhuri, Pradip (SAMHSA/CBHSQ)
<pradip.muh...@samhsa.hhs.gov> wrote:
>
> Hello,
>
> The most part of the program works except that the following logical variable
> does not get created although the second logical variable-based extraction
> works.
>
> I don't understand what I am doing wrong here.
>
> state_pflt200 <- df$p_fatal <200
> df[state_pflt200, c("state.name","p_fatal")]
>
>
> I would appreciate receiving your help.
>
> Thanks,
>
> Pradip Muhuri
>
>
>
>
> ##### Below is the code that includes the reproducible example.
>
> df <- data.frame (state.name=
>
> c("Alabama","Alaska","Arizona","Arkansas","California","Colorado","Connecticut",
> "Delaware","DC",
> "Florida","Georgia","Hawaii","Idaho","Illinois","Indiana",
> "Iowa","Kansas","Kentucky",
> "Louisiana","Maine","Maryland","Massachusetts","Michigan",
>
> "Minnesota","Mississippi","Missouri","Montana","Nebraska","Nevada","New
> Hampshire",
> "New Jersey","New Mexico","New York","North
> Carolina","North Dakota","Ohio","Oklahoma",
> "Oregon","Pennsylvania","Rhode Island","South
> Carolina","South Dakota","Tennessee","Texas",
> "Utah", "Vermont","Virginia","Washington","West
> Virginia","Wisconsin","Wyoming"),
>
> p_fatal = sample(200:500,51,replace=TRUE),
>
> t_safety_score = sample(1:10,51,replace=TRUE)
> )
>
> options (width=120)
>
>
>
> # The following logical variable does not get created - Don't understand what
> I am doing wrong
> state_pflt200 <- df$p_fatal <200
> df[state_pflt200, c("state.name","p_fatal")]
>
> # The following works
> state_sslt5 <- df$t_safety_score <5
> df[state_sslt5,c("state.name", "t_safety_score")]
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
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