Count number of joiners b/w events or after event announced

[RickPack]

To align with the now-canceled meetup description:

For presentation: count number of joiners b/w events to offer comments about events / speakers that draw members.
If possible, depending on Meetup API (is there an event announced date?), get joiners between event announcing and event ending.

[RickPack]

You might borrow from the following code to create datetime windows in which any member that joins is attributed to the event.

do(data.frame(new_member_slot = seq(round(.$event1_dtm, "day") + 1, 
                                          max(round(.$event1_dtm, "day") + 1, 
                                              round(.$event2_dtm - 60, "day")), 
                                          paste(1, "day"))))

Where event1_dtm is the datetime for each event and then event2_dtm is the datetime of the next event. The 1 is added to event1_dtm so that members who join the day after an event are attributed to the next event.

Better is probably to look at say 7 number of days before each event.