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
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