Re: [R] ifelse statement with two vectors of different length

Hi, Please show a reproducible example. countrydiff - c(Albania, Algeria, Belarus, Canada, Germany) long_df - data.frame(country_name = c(Algeria, Guyana, Hungary, Algeria, Canada, Iran, Iran, Norway,Uruguay, Zimbabwe) )  ifelse(long_df$country_name %in% countrydiff,1,0) # [1] 1 0 0 1 1 0 0 0 0

[R] ifelse statement with two vectors of different length

Dear list-members, I have the following problem: I have a vector (countrydiff) with length 72 and another vector (long_df$country_name) which is about 12000 long. Basically what I want to do is to if the factor level (or string name) in long_df$country_name appears on the countrydiff, then

Re: [R] ifelse statement with two vectors of different length

Dear Arun Thanks for your reply, it made me realize that the problem was not in the code but in the levels() of the factors. Some countries had some extra spacing which made the ifelse() function not work. So if I modify your code (added space to countrydiff), it will then look something like

Re: [R] ifelse statement with two vectors of different length

Hi Adel, If the problem is the spacing, then library(stringr) 1*(long_df$country_name %in% str_trim(countrydiff)) # [1] 1 0 0 1 1 0 0 0 0 0 A.K. Dear Arun Thanks for your reply, it made me realize that the problem was not in the code but in the levels() of the factors. Some countries had