dplyr如何计算R中的条件变异？

Question

i have this problem. I want calculate a new variable, this variable it conditioned to other variables:

P46A is a variable of level of education and P47 is the years in this level.

The idea is:

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And i use the dplyr:

Datos %>% mutate(newvariable= if_else(P46A %in% c(-98,-99),NA,
if_else(P46A %in% c(0,1), P47, if_else(P46A %in% c(2:4),P47+3,
if_else(P46A %in% c(5:7,11),P47+16, if_else(P46A %in% c(8,9),P47+23,P47+26))))))

In other words, i want calculate a newvariable dependent of the values in other varaible. When i run the code R print error.

Error in mutate_impl(.data, dots) : 
  Evaluation error: `false` must be type logical, not double.

thanks!

Answer 1

You might also trying replacing the if_else statements with a case_when statement. It makes for much more legible code.

Datos %>% mutate(
  newvariable= case_when(
    P46A %in% c(-98, -99) ~ NA_real_,
    P46A %in% c(0, 1) ~ P47,
    P46A %in% c(5:7, 11) ~ P47 + 16,
    P46A %in% 8:9 ~ P47 + 23,
    TRUE ~ P47 + 26
  )
)