[R] add trailing dates with rbind

[Frederik Feys]

I am having a hell of a time, this must surely be simple to solve….

Basically I want to add trailing dates to datasets with differing starting dates so that across datasets I have the same starting date.

# make dataset with the same starting date
start_date = as.Date("2020-03-01")
d_start_date = min(agg_d_h$Group.date)

diff_in_days = as.numeric(difftime(d_start_date, start_date, units = "days")) 

for(i in 1:diff_in_days) {
  next_date  = start_date+i
  app_d <- rbind(agg_d_h, c(next_date, 0) )
}

gives:
Error in as.Date.numeric(value) : 'origin' must be supplied

Thank you for your time to help me!

Frederik Feys