Reclassify string values
On Thu, Nov 3, 2011 at 1:31 PM, Zev Ross <zev at zevross.com> wrote:
Hi Peter, Thanks for the response. What you've suggested works fine but I'm looking for something that is simpler than my solution and avoids the pesky warning message. Your response avoids the warning message but just as complex (if not more). I just assumed there would be a function along the lines of:
mydata <- c("A", "C", "A", "D", "B", "B")
reclassify(mydata, inCategories=c("A", "B" ,"C", "D"),
?outCategories=c("Group1", "Group1", "Group2", "Group2"))
[1] "Group1" "Group2" "Group1" "Group2" "Group1" "Group1"
But of course, except sometimes you have to write the function yourself.
reclassify = function(data, inCategories, outCategories)
{
outCategories[ match(data, inCategories)]
}
Sorry I can't make it any simpler than a 1-line solution :)
Feel free to add some checking of input validity, if you need that.
Peter