[R] randomForest outlier

[Birgit Lemcke]

Thanks anyway for your answer.
That was also an option that I took into account (no potential  
outliers) and I will have a look at the "value" section of ?outliers.

B.

Am 16.07.2008 um 14:11 schrieb Liaw, Andy:

> Perhaps if you follow the posting guide more closely, you might get  
> more
> (useful) replies, but without looking at your data, I doubt there's  
> much
> anyone can do for you.
>
> The fact that the range of the outlying measures is -1 to 2 would tell
> me there are no potential outliers by this measure.  Please see the
> "value" section of ?outlier to see how this measure is computed.
>
> Andy
>
> From: Birgitle
>>
>> Still the same question:
>>
>>
>> Birgitle wrote:
>>>
>>> I try to use ?randomForest to find variables that are the
>> most important
>>> to divide my dataset (continuous, categorical variables) in
>> two given
>>> groups.
>>>
>>> But when I plot the outlier:
>>>
>>> plot(outlier(rfObject, cls=groupingVariable),
>>> type="p",col=c("red","green")[as.numeric(groupingVariable)])
>>>
>>> it seems to me that all my values appear as outliers.
>>> Has anybody suggestions what is going wrong in my analysis?
>>>
>>>
>>>
>>>
>>
>> Additonal remark
>> The scaling of the y-axis is quite small between -1 and 2.
>>
>>
>> -----
>> The art of living is more like wrestling than dancing.
>> (Marcus Aurelius)
>> -- 
>> View this message in context:
>> http://www.nabble.com/randomForest-outlier-tp17979182p18466832.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
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>>
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===========================
Birgit Lemcke
Institut of Systematic Botany
University of Zurich
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
mail: birgit.lemcke at systbot.uzh.ch
===========================