[R] receiving Error: unexpected '='

[Jeff Newmiller]

"if" is not vectorized... it only works on length 1 test values. However,  if you do use it,  it absolutely requires parentheses... if ( test ) { truecode }.

I think you want "ifelse" which is vectorized... something like

ifelse( is.na( x ), y, x )

Read the help pages ?if and ?ifelse. 

I don't know about the missing "E" in the error message... you might have corrupted your code with unicode or other non-ASCII characters by using a word processor rather than a text editor. 
-- 
Sent from my phone. Please excuse my brevity.

On February 28, 2016 3:08:56 PM PST, KMNanus <kmnanus at gmail.com> wrote:
>I’m a newbie and trying to execute this simple function in order to
>change wk 5 NA’s to wk 4 values for the dataset (ken) below.  Can
>someone pls tell me what I’m doing wrong?  The error msg is “"rror:
>unexpected input in "new_week <- function(x,y) { “
>Even the “E” is missing in the word “Error."
>
>new_week <- function(x,y) {
>if x[is.na(x)] {
>x = y
>}
>}
>
>patient	wk1	wk2	wk3	wk4	wk5
>A	1	2	4	6	8
>B	2	3	NA	3	17
>C	3	4	5	11	NA
>D	4	NA	6	12	11
>E	5	6	7	NA	21
>F	6	7	8	3	NA
>G	7	8	9	7	NA
>
>
>
>Ken
>kmnanus at gmail.com
>914-450-0816 (tel)
>347-730-4813 (fax)
>
>
>
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