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I have been trying to open data that I have saved in an excel spread sheet. I saved it as a csv. Then I tried using the read.csv command. However, everytime I do this-- diseasedat<-read.csv("M:/sloan/R/disease/disease.csv", sep=, header = TRUE, fill= TRUE)-- I get an error message: Error in file(file, "r") : unable to open connection In addition: Warning message:

I Have been trying to convert a vector of dates into julian dates using the following commands: as.date & as.numeric. I can convert a date no problem by doing the following: as.numeric (as.date ("9/21/2004")) but as soon as I try to do an entire vector I am given the following: as.numeric (as.date(date1)) Error in as.date(date1) : Cannot coerce to date format I have tried

I have used the RODBC package to read in data I have stored in an Access file. When I am using data from files other than ACCESS I have no problem using the survival package to work with dates; however, with the ACCESS data the dates are reading-in in the following format: "2004-02-11 Pacific Standard Time". How do I remove the "Pacific Standard Time" part in ACCESS or R so

I would like to make one histogram combining two value vectors. One vector has more than 50 entries and the other only has 16. Both vectors contain dates in the POSIXct format. I need to be able to highlight the 16 entries from the smaller data set. Is it possible to do this with the hist function? Which function should I use? Sloan -- _______________________________________________ Surf the