[R] Syntax for order()

[Kevin E. Thorpe]

On 03/25/2014 02:36 PM, John Kane wrote:
> Has there been a change in the syntax for order() or am I just making some stupid mistake here?
>
> dat1 <-read.table(text="
> name val
> Alex 4
> Jim 10
> Fred 8
> Julie 44
> ",sep="",header=TRUE,stringsAsFactors=FALSE)
> dat1[order(val), ]  # Gives Error in order(val) : object 'val' not found
>
> dat1[order(dat1[,2]), ] # Works just fine.
>
> John Kane
> Kingston ON Canada

I don't think the behaviour has changed. I bet dat1[order(dat1$val), ] 
works just fine.

-- 
Kevin E. Thorpe
Head of Biostatistics,  Applied Health Research Centre (AHRC)
Li Ka Shing Knowledge Institute of St. Michael's
Assistant Professor, Dalla Lana School of Public Health
University of Toronto
email: kevin.thorpe at utoronto.ca  Tel: 416.864.5776  Fax: 416.864.3016