I am working on a health study. I have the daily contaminant levels in grinking water, for a month long period, for three different communities. I am trying to tabulate people's exposure based on how long they drank the water. So, if JaneDoe lived in Town A from 1/1/12-1/5/12 and then lived in Town B from 1/6/12-1/31/12, her level of exposure would be....
The question is how do I cite only part of a vector based on a date range? This is a population study of several thousand people so I can't manually call the date ranges for each participant in the study... The code would be something along the lines of:
then ....cite this part of TownA's contaminant vector, but on ly for the date range in wich JaneDoe lived there....the muchy part I don't know how to code:[
Thanks for any thoughts on this!