Re: [R] Check Dates

Dear Kevin, Assuming that closure and referral are two columns in your df and you have already converted them to date columns. The following should work: df$Dec04<- ifelse(df$referral <"2005-01-01" & df$closure > "2003-12-31" | df$closure== "", "Yes", "No") if you are trying to account for

Re: [R] help on hmisc

Hi, I thought I would just jump in on this as I am running an i7 as well. I use hmisc for the doBy functions and it would make a huge difference particularly with large data sets to run this on 64bit windows. I'm not sure how to compile from source and usually use the install.packages opti