[R] subset data based on values in multiple columns

Dear list members, I am trying to create a subset of a data frame based on conditions in two columns, and after spending much time trying (and search R-help) have not had any luck. Essentially, I have a data frame that is something like this:

Re: [R] subset data based on values in multiple columns

Hi Dear list members, I am trying to create a subset of a data frame based on conditions in two columns, and after spending much time trying (and search R-help) have not had any luck. Essentially, I have a data frame that is something like this: date-as.POSIXct(as.character(c

Re: [R] subset data based on values in multiple columns

, 2012 2:55 AM Subject: [R] subset data based on values in multiple columns Dear list members, I am trying to create a subset of a data frame based on conditions in two columns, and after spending much time trying (and search R-help) have not had any luck. Essentially, I have a data frame