[R] Rgui.exe - Error while tuning svm

David Meyer david.meyer at wu-wien.ac.at
Thu Dec 23 10:13:21 CET 2004

> If I try to tune my svm with the code:

> Tune <- tune.svm(Data.Train, Class.Train, type="C-classification",
> kernel="radial", gamma = 2^(-1:1), cost = 2^(2:4))

> i get a windows Messagebox with a error in the application "Rgui.exe"
> and the message: "Die Anweisung in 0x6c48174d verweist auf Speicher
> 0x00000000. Der Vorgang "read" konnte nicht auf dem Speicher
> ausgef_hrt werden. ....."

Which version of e1071 are you using?
There has been a memory leak problem until 1.5-1 which could very well
cause this null pointer exception...


Dr. David Meyer
Department of Information Systems

Vienna University of Economics and Business Administration
Augasse 2-6, A-1090 Wien, Austria, Europe
Fax: +43-1-313 36x746 
Tel: +43-1-313 36x4393
HP:  http://wi.wu-wien.ac.at/~meyer/

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