Since we do not have the data, it is hard for us to reproduce and debug.
Uwe Ligges
On 21.12.2010 23:48, Dennis wrote:> Just curious if anyone else has got this error before, and if so,
> would know what I could do (if anything) to get past it:
>
>> mtry<- tuneRF(training, trainingdata$class, ntreeTry = 500,
stepFactor = 2, improve = 0.05, trace = TRUE, plot = TRUE, doBest = FALSE)
> mtry = 13 OOB error = 0.62%
> Searching left ...
> mtry = 7 OOB error = 1.38%
> -1.222222 0.05
> Searching right ...
> mtry = 26 OOB error = 0.24%
> 0.6111111 0.05
> mtry = 52 OOB error = 0.07%
> 0.7142857 0.05
> mtry = 104 OOB error = 0%
> 1 0.05
> mtry = 173 OOB error = 0%
> NaN 0.05
> Error in if (Improve> improve) { : missing value where TRUE/FALSE
> needed
>
>
> I've used tuneRF successfully before, but in this instance, no matter
> what I change in the parameters, I still get the error above (last
> line). The data has no NAs in it. I'm using R 2.12.0 (64bit-M$ Windows
> 7).
>
> Thanks in advance!
>
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