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Hello, I am having trouble by using the write.table function to write a data frame of 4 columns and 7530 rows. I don?t know if I should just use a sep="\n" and change the .xls file into a .csv file. Thanks in advance ----- Anna Lippel new in R so be careful I should be asking a loooooooot of questions!:teeth: -- View this message in context:

Hello, I am getting an error with the following code: if( P2 > P1) + { + P<-P2 + } > else Erro: unexpected 'else' in "else" > { + P<-P1 + } I checked the syntax so I don?t understand, I have other if else statements with the same syntax working. Thanks in advance -- View this message in context:

Hello, I am using setwd() to change the working directory but I have to enter it everytime I open R, is there a way to set this permanently as a working directory? Thanx =^D -- View this message in context: http://old.nabble.com/Change-working-directory-tp26337486p26337486.html Sent from the R help mailing list archive at Nabble.com.

Hello everybody, here is the code I use to read an excel file containing two rows, one of date, the other of prices: library(RODBC) z <- odbcConnectExcel("SPX_HistoricalData.xls") datas <- sqlFetch(z,"Sheet1") close(z) It works pretty well but the only thing is that the datas stop at row 7530 and I don?t know why datas is a data frame that contains 7531 rows with the

Hello, I am trying to plot a graphic with many lines with the following command: plot(datas[1:n,1],datas[1:n,2],type="l",main="SP500 Prices and Moving Averages",xlab="Date",ylab="Prices",col="black") lines(datas[1:n,1],datas[1:n,3],type="l",col="green",lty="solid") But I just see the first curve. I have tried it on

Hello everybody, I?ve been looking for a function that would create an excel file in my working directory where I would write my dataframe but I only found the functions to write or read in an existing file that you gave me on my former post or on some websites. I can?t find either functions to manipulate those datas: for example, I would like some lines to be red or green according to their

Hello, the sqlSave function is used in order to write a dataframe on excel. This function creates worksheets using the attribute tablename and writes the data.frame in it. What I want to do is to create this data.frame but being able in case this worksheet already exists to delete the former datas and write the new ones in it. I used the safer and append attributes. When you set safer to false,