aggregate 1-minute data into 5-minute average data

Question

My question here is to aggregate the data collected at every 1-minute into 5-minute average.

DeviceTime         Concentration
6/20/2013 11:13       
6/20/201         


        

Answer 1

Using the dplyr package and assuming, your data is stored in a data frame named df:

require(dplyr)
df %>%
  group_by(DeviceTime = cut(DeviceTime, breaks="5 min")) %>%
  summarize(Concentration = mean(Concentration))