Dates in Common
The problem is in the intersect function that does x = as.vector(x) and therefore transforms date vector into a numeric . Try to: d1 = as.character(data1) ; d2 = as.character(data2) d = intersect(d1, d2) data = as.Date(d) A.
Tom La Bone wrote:
I have two collections of dates and I want to figure out what dates they have in common. This is not giving me what I want (I don't know what it is giving me). What is the best way to do this? Tom
data1
[1] "1948-02-24 EST" "1949-04-12 EST" "1950-05-29 EDT" "1951-05-21 EDT" [5] "1951-12-20 EST" "1953-01-22 EST" "1955-02-28 EST" "1956-03-08 EST" [9] "1957-03-22 EST" "1958-02-07 EST"
data2
[1] "1948-02-24 EST" "1949-04-12 EST" "1950-05-29 EDT" "1951-05-21 EDT" [5] "1951-12-20 EST" "1953-01-22 EST" "1955-02-28 EST" "1956-03-08 EST" [9] "1957-03-22 EST" "1958-02-07 EST"
intersect(data1,data2)
[1] -689626800 -653943600 -618350400 -587505600 -569098800 -534625200 [7] -468356400 -436042800 -403297200 -375476400