[R] Removing NAs from dataframe (for use in Vioplot)

[David Winsemius]

> On Apr 30, 2016, at 12:58 PM, Mike Smith <mike at hsm.org.uk> wrote:
> 
> Hi
> 
> First post and a relative R newbie....
> 
> I am using the vioplot library to produce some violin plots. I have an input CSV with columns off irregular length that contain NAs. I want to strip the NAs out and produce a multiple violin plot automatically labelled using the headers. At the moment I do this
> 
> Code: 
> ds1 = read.csv("http://www.lecturematerials.co.uk/data/spelling.csv")
> library(vioplot)
> y6<-na.omit(ds1$y6)
> y5<-na.omit(ds1$y5)
> y4<-na.omit(ds1$y4)
> y3<-na.omit(ds1$y3)
> y2<-na.omit(ds1$y2)
> y1<-na.omit(ds1$y1)
> vioplot(y6, y5, y4,y3,y2,y1,horizontal=TRUE, names=c("Y6", "Y5","Y4","Y3","Y2","Y1"), col = "lightblue")
> 
> 
> Two queries:
> 
> 1. Is there a more elegant way of automatically stripping the NAs, passing the columns to the function along with the header names??
> 

ds2 <- lapply( ds1, na.omit)


> 2. Can I easily add the sample size to each violin plotted??

> ?violplot
No documentation for ‘violplot’ in specified packages and libraries:
you could try ‘??violplot’

> 


> thanks
> 
> mike
> 						
> 
> 
> ---
> Mike Smith
> 
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David Winsemius
Alameda, CA, USA