Re: [R] Calculating Weeks Since Last Event

2017-09-15 Thread jim holtman
Try this: # supplied data library(zoo) # need the 'na.locf' function x <- structure(list(ScanDate = structure(c(16433, 16440, 16447, 16454, 16461, 16468, 16475, 16482, 16489, 16496, 16503, 16510, 16517,

[R] Calculating Weeks Since Last Event

2017-09-15 Thread Abhinaba Roy
Hi, I have an input data > dput (input) structure(list(ScanDate = structure(c(16433, 16440, 16447, 16454, 16461, 16468, 16475, 16482, 16489, 16496, 16503, 16510, 16517, 16524, 16531, 16538, 16545, 16552, 16559, 16566, 16573, 16580, 16587, 16594, 16601, 16608, 16615, 16622), class = "Date"),