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 [[alternative HTML version deleted]] __ 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'
Uwe Ligges ligges at 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.
