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

David Winsemius dwinsemius at comcast.net
Sun May 1 01:23:43 CEST 2016

> On Apr 30, 2016, at 4:16 PM, David Winsemius <dwinsemius at comcast.net> wrote:
>> 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.

It's a package,  .... not a library.

>> 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’

I see that I mispled that _package_ name. However, after loading it I realized that I had no way of replicating what you are seeing, because you didn't provide that file (or even something that resembles it. It's rather unclear how you wanted this information presented.


David Winsemius
Alameda, CA, USA

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