通过将R中数据框的现有列中的值分组来创建新列

Question

I have the following dataframe:

  Date       power                
1 16/12/2006 4.216              
2 17/12/2006 5.360              
3 18/12/2006 5.374              
4 19/12/2006 5.388                 
5 20/12/2006 3.666                 
6 21/12/2006 3.520    

I would like to create a new column to group the values of power into intervals say 0-0.5, 0.5-1 and so on upto 5.5-6. I'm fairly new to R. I think it is possible using split function but not sure how to do that. Thanks in advance.

Answer 1

First you would need to create your bins.

# Create break from  0 to 10 in 0.5 intervals
breaks = seq(0, 10, 0.5)

# Create bin column
data$bins = cut(data$power, breaks)

You can keep the value of data$bins as intervals, or convert (coerce) to numeric by

 data$bins = as.numeric(data$bins).

Hope this helps.