[R] Tripped up by Removing Level

[jim holtman]

Try this:

> bargin$stuffnew<-bargin$stuff[bargin$stuff != "very.high", drop=TRUE]
> bargin$stuffnew
 [1] low    middle low    low    low    low    middle low    middle
middle middle middle middle high
[15] high   low    middle middle low    high
Levels: low middle high
>


On Wed, Jul 29, 2009 at 8:47 PM, Jason Rupert<jasonkrupert at yahoo.com> wrote:
> Code is provided below.
>
> I was trying to follow the example at the following website:
> http://www.ats.ucla.edu/stat/R/modules/factor_variables.htm
>
> Only difference is that I am working with trying to remove a level from a dataframe.  In the example below, notice that "very.high" is still a level in bargin$stuffnew, even though I thought I removed it.
>
> Thanks for info on what I might have overlooked to remove "very.high" level and if I can do it after the fact from bargin$stuffnew.
>
> Thanks again.
>
> bargin<-NULL
> ses<-NULL
> ses <- c("low", "middle", "low", "low", "low", "low", "middle", "low", "middle", "middle", "middle", "middle", "middle", "high", "high", "low", "middle", "middle", "low", "high")
> bargin$stuff <- factor(ses, levels = c("low", "middle", "high"))
> bargin$stuff
> bargin$stuff<-factor(bargin$stuff, levels = c(levels(bargin$stuff), "very.high"))
> bargin$stuff
> bargin$stuffnew<-bargin$stuff[bargin$stuff != "very.high"]
> bargin$stuffnew
>  [1] low    middle low    low    low    low    middle low    middle middle middle middle middle high
> [15] high   low    middle middle low    high
> Levels: low middle high very.high
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?