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Hi R users,   Thanks in advance.   I am using R 2.12.0 on Windows XP.   My objective is to construct algorithms for High Frequency Trading.   May I request you to provide me information such as packages or tools please.   Thank you very much for the time you have given.   Regards,   Deb   [[alternative HTML version deleted]]

When I sink the output of an RWeka model to a text file, the output file appears empty: library(RWeka) model = LogitBoost(Species~.,data=iris) print(model) sink("output.txt") print(model) #file output.txt is created, but it is blank sink() Am I doing anything wrong? [[alternative HTML version deleted]]

I have updated from ggplot2 0.8.9 on Windows to ggplot 0.9.0 (and then 0.9.1) and I can't find scale_y_logit() anymore ... On Mac, I can't see scale_y_logit() in ggplot 0.9.0 either. Am I missing anything? Thanks

Hi, I'm trying to connect to a Teradata database via RODBC on a Linux 64 machine (Red Hat Enterprise Linux 5). The ODBC driver is properly configured and queries sent via unixODBC's isql tool work properly. However, this is what happens when I try to connect via RODBC: > library(RODBC) > conn = odbcConnect("thedsn", uid="theuid", pwd="thepass") ***

Hello, I was wondering what would be the easiest way to append weights to a dataset in RWeka. Ideally, I'd like to have something like: m <- LogitBoost(Species ~ ., data=iris, weights = myweights) But that, as far as I understand, it is not implemented and I'd need to use a workaround. I know that when programming Weka in Java it is possible to assign weights to instances using