[R] Subset returning unexpected result
jholtman at gmail.com
Thu Oct 15 18:14:25 CEST 2009
It would be useful to also post the 'str(int1901)' so that we could
see the structure of the dataframe. Is Latitude by chance a 'factor'?
You could also put a subset with the data by doing:
On Thu, Oct 15, 2009 at 11:39 AM, Steve Murray <smurray444 at hotmail.com> wrote:
> Dear all,
> I am attempting to subset a data frame based on a range of latitude values. I want to extract the values of 'interception' where latitude ranges between 50 and 60. I am doing this using the following code, yet it doesn't return the results I expected:
>> test <- subset(int1901, Latitude>=50 & Latitude <60, select=c(Latitude, Interception))
> Latitude Interception
> 2 6.25 0.04725863
> 3 6.75 67.02455139
> 82 50.75 51.74784088
> 83 51.25 57.04327774
> 84 51.75 51.51020432
> 85 52.25 53.30662537
> As you can see, latitude values outside the 50 to 60 range have been retained (e.g. the top two rows of 'test'). Why is this, and how can I ensure that I subset the data as initially intended?
> Many thanks for any help offered,
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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What is the problem that you are trying to solve?
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