Re: [R] colClasses: supressed 'NA'
Uwe Ligges statistik.uni-dortmund.de> writes: > Well, you say it should be a factor, hence " " is taken as a level. And why not " " a level. Thanks for drawing my attention to it. It is common mistake that is easy to slip attention. Thanks a lot. Anupam. __ 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 and provide commented, minimal, self-contained, reproducible code.
Re: [R] colClasses: supressed 'NA'
Anupam Tyagi wrote:
> Hi,
>
> The colClasses seem to be supressing 'NA' vlaues. How do I fix this?
>
> R script and first 5 lines of output is below.
>
> File "test2.dat" has blanks that are read as "NA" when I do not use
> 'colClasses', but as blanks when I use 'colClasses'.
Well, you say it should be a factor, hence " " is taken as a level.
Otherwise you have to specify na.string = " ".
Uwe Ligges
> temp.df <- read.fwf("test2.dat", width=c(10,1,1,1,1,2,2,3,3,1),
> col.names=c("psu","losewt","maintain","fewcal","phyact","age","income","weight",
> "wtdesire","gender"),
> colClasses=c("factor","factor","factor","factor","factor","numeric","factor",
> "numeric","numeric","factor"),
> nrows=27, comment.char="")
>
> temp.df
>psu losewt maintain fewcal phyact age income weight wtdesire gender
> 1 2003009323 2252 05220 220 1
> 2 2003005181 21 2 2 58 08165 145 2
> 3 2003015942 21 4 1 76 05142 130 2
> 4 2003011406 21 3 1 43 03110 110 2
> 5 2003006786 1 4 1 49 06178 145 2
>
> ? why am I not getting missing values when I use 'colClasses'?
>
> __
> 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
> and provide commented, minimal, self-contained, reproducible code.
__
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
and provide commented, minimal, self-contained, reproducible code.
Re: [R] colClasses: supressed 'NA'
Because by default blank fields aren't considered to be missing in factors
but they are in integer vectors.
> f1<-factor(c(1,2,"",3,4))
> f1
[1] 1 2 3 4
Levels: 1 2 3 4
I think you can fix this by specifying na.strings=c("NA","")
On 26/09/06, Anupam Tyagi <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> The colClasses seem to be supressing 'NA' vlaues. How do I fix this?
>
> R script and first 5 lines of output is below.
>
> File "test2.dat" has blanks that are read as "NA" when I do not use
> 'colClasses', but as blanks when I use 'colClasses'.
>
> temp.df <- read.fwf("test2.dat", width=c(10,1,1,1,1,2,2,3,3,1),
> col.names=c
> ("psu","losewt","maintain","fewcal","phyact","age","income","weight",
> "wtdesire","gender"),
>
> colClasses=c("factor","factor","factor","factor","factor","numeric","factor",
> "numeric","numeric","factor"),
> nrows=27, comment.char="")
>
> temp.df
>psu losewt maintain fewcal phyact age income weight wtdesire
> gender
> 1 2003009323 2252
> 05220 220 1
> 2 2003005181 21 2 2 58
> 08165 145 2
> 3 2003015942 21 4 1 76
> 05142 130 2
> 4 2003011406 21 3 1 43
> 03110 110 2
> 5 2003006786 1 4 1 49
> 06178 145 2
>
> ? why am I not getting missing values when I use 'colClasses'?
>
> __
> 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
> and provide commented, minimal, self-contained, reproducible code.
>
--
=
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP
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__
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
and provide commented, minimal, self-contained, reproducible code.
