Question

I have a good one this time. I need to combine df$Date and df$Time to Date_Time as below:

df
   Date      Time   Date_Time
    1/2/2012   9     1/2/2012 9:00:00
    1/3/2012   2.3   1/3/2012 2:30:00
    1/4/2012   8     1/4/2012 8:00:00

I am doing this but this code is not working right.

    df$Time<-gsub( '\\.', ':', df$Time)
    df$Time <- paste(df$Time, ":00", sep='')
    df$Date_Time <- paste(df$Date, df$Time, sep=' ')
    df$Date_Time<-strptime(df$Date_Time, format="%Y-%m-%d %H:%M")

Is there an easy and better way to convert date to datetime regardless of having complete H:M:S at the end?

Basically, if the Date_Time is like this:

1/1/2012 9 or 1/1/2012 9.3

Is there way to convert this data to datetime format in R?

Answer 1

Yeah, just do strptime(paste(df$Date, format(df$Time, nsmall=2)), format='%m/%d/%Y %H.%M')

Edit: changed nsmall to 2