Re: [R] Minimum and blanks
Thanks Joris and Peter. Sorry for not giving enough details. I have tried your suggestions and the problem is solved. Thank you. :) JorisMeys wrote: > > The minimum of a character vector is returned according to the unicode > or ascii code values, but I guess that's not what Chris is looking > for. > > Chris, please always try to provide a minimal working example of code > to see what is wrong. > > Something goes wrong with the input in your example. As Peter > rightfully pointed out, your vector is considered a character vector. > So you need to : > > 1) replace "" with NA > e.g. x <- ifelse(x=='',NA,x) > Better to do something like that when reading in the code. > > 2) use the argument na.rm : min (x, na.rm=T) > > kind regards > Joris > > On Thu, Oct 1, 2009 at 8:36 AM, Peter Ehlers wrote: >> Chris, >> >> What is your definition of the minimum of a *character* vector? >> >> -Peter Ehlers >> >> Chris Li wrote: >>> >>> Hi all, >>> >>> I want to calculate the minimum of a column which contains blanks. >>> >>> R returns "" as the minimum, which is not I want. >>> >>> Is there a way to overcome it? >>> >>> Thanks in advance. >>> Chris >> >> __ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://www.nabble.com/Minimum-and-blanks-tp25692189p25707736.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Minimum and blanks
The minimum of a character vector is returned according to the unicode or ascii code values, but I guess that's not what Chris is looking for. Chris, please always try to provide a minimal working example of code to see what is wrong. Something goes wrong with the input in your example. As Peter rightfully pointed out, your vector is considered a character vector. So you need to : 1) replace "" with NA e.g. x <- ifelse(x=='',NA,x) Better to do something like that when reading in the code. 2) use the argument na.rm : min (x, na.rm=T) kind regards Joris On Thu, Oct 1, 2009 at 8:36 AM, Peter Ehlers wrote: > Chris, > > What is your definition of the minimum of a *character* vector? > > -Peter Ehlers > > Chris Li wrote: >> >> Hi all, >> >> I want to calculate the minimum of a column which contains blanks. >> >> R returns "" as the minimum, which is not I want. >> >> Is there a way to overcome it? >> >> Thanks in advance. >> Chris > > __ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Minimum and blanks
Chris, What is your definition of the minimum of a *character* vector? -Peter Ehlers Chris Li wrote: Hi all, I want to calculate the minimum of a column which contains blanks. R returns "" as the minimum, which is not I want. Is there a way to overcome it? Thanks in advance. Chris __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Minimum and blanks
Hi all, I want to calculate the minimum of a column which contains blanks. R returns "" as the minimum, which is not I want. Is there a way to overcome it? Thanks in advance. Chris -- View this message in context: http://www.nabble.com/Minimum-and-blanks-tp25692189p25692189.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
