How to define holidays for is.holiday() chron package in R

Question

I\'m trying to use chron\'s is.holiday() function, but I\'m having trouble getting it to work. The documentation says to modify the .Holiday

Answer 1

I was trying to do the same thing and found this older post. I didn't need to modify .Holidays:

library(timeDate);library(chron)
hlist <- c("USChristmasDay","USGoodFriday","USIndependenceDay","USLaborDay",
    "USNewYearsDay","USThanksgivingDay")        
myholidays  <- dates(as.character(holiday(2000:2013,hlist)),format="Y-M-D")

> is.holiday(as.Date("2013-11-28"),myholidays)

[1] TRUE

> chron::.Holidays
  New Years Day     Memorial Day Independence Day        Labor Day     Thanksgiving        Christmas 
    01/01/92         05/25/92         07/04/92         09/07/92         11/26/92         12/25/92