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...b [1] 3 4 5 I would like to have a vector that is a sequence which starting from a and ending at b c = c(1:3,2:4,3:5) c = c(1,2,3,2,3,4,3,4,5) Thank you Best Regards, Suphajak Ngamlak Equity and Derivatives Trading Phatra Securities Public Company Limited Tel: +662-305-9179 Email: suphajak@phatrasecurities.com [[alternative HTML version deleted]]

...Data, weight = Weight) summary(Result) Data2 <- Data*Weight Result2<- lm(formula = MatY~IndSub1+IndSub2+IndSub3-1, data = Data2) summary(Result2) Best Regards, Suphajak Ngamlak Asset Management (Hedge Fund) Phatra Securities Public Company Limited Tel: (66)2-305-9179 Email: suphajak@phatrasecurities.com ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------...

...") Table$VALUE <-0 Export<-"C:/A_XVal0810.RSK" write.table(Table, file= Export, sep = ",", col.names = TRUE) Thank you Best Regards, Suphajak Ngamlak Equity and Derivatives Trading Phatra Securities Public Company Limited Tel: +662-305-9179 Email: suphajak@phatrasecurities.com [[alternative HTML version deleted]]

...] + ... + A[[n]] [3,2])/n Please note that some cells are NA; so I need to remove them when calculating average. How could I get this efficiently? Thank you Best Regards, Suphajak Ngamlak Equity and Derivatives Trading Phatra Securities Public Company Limited Tel: (66)2-305-9179 Email: suphajak@phatrasecurities.com [[alternative HTML version deleted]]

...Bygroup") return(AVG) } Result<-GetAvg(Test,'A') The only difference is with $Input. How can I refer to this variable in sqldf. Thank you Best Regards, Suphajak Ngamlak Equity and Derivatives Trading Phatra Securities Public Company Limited Tel: +662-305-9179 Email: suphajak@phatrasecurities.com [[alternative HTML version deleted]]

...onnect("ptsecmstqa01-alpha") query <- paste("execute DB.dbo.usp_test") Data<- sqlQuery(channel1, query) However, it returned blank. Best Regards, Suphajak Ngamlak Equity and Derivatives Trading Phatra Securities Public Company Limited Tel: (66)2-305-9179 Email: suphajak@phatrasecurities.com [[alternative HTML version deleted]]

Please advice on the package I should use to run a linear regression model (weighted least squared) with linear equality constraint. I initially tried "constrOptim" but it turned out that it only supported inequality linear constraint. Thank you very much in advance. Cheers, Jon -- View this message in context: