[R] SAPPLY function XXXX

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 04.05.2011 22:26:59:

> Erik Iverson <eriki at ccbr.umn.edu> 
> Odeslal: r-help-bounces at r-project.org
> 
> 04.05.2011 22:26
> 
> Komu
> 
> Dan Abner <dan.abner99 at gmail.com>
> 
> 
> > Ultimately, I would like for this to be 1 conponent in a larger 
function
> > that will produce PROC CONTENTS style output. Something like...
> > 
> > data1.contents<-data.frame(Variable=names(data1),
> >  Class=sapply(data1,class),
> >  n.valid=sapply(data1,sum(!is.na)),
> >  n.miss=sapply(data1,sum(is.na)))
> > data1.contents
> 
> Also meant to mention to see ?describe in the Hmisc package:
> 
> E.g.,
> 
>  > describe(c(NA, 1:10))
> 
> There is also a useful method for data.frame objects.

colSums(is.na(data1))
colSums(!is.na(data1))

may also show number of missing and nonmissing values in data frame.

Regards
Petr

> 
> --Erik
> 
> ______________________________________________
> R-help at 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.