I would suggesting using "" instead of NULL for rz, throughout this code.
(I would also suggest making sure the code can be copied into R without
causing a syntax error before posting the request for help.)
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Fri, Mar 11, 2016 at 9:10 AM, Adams, Jean
To reframe the problem ... the issue is not with the function nchar() (or
whatever), it's with the input value rz being null. I suggest you build
into the loop whatever actions/outputs you want when rz is NULL.
for (i in 1:10){
if (is.null(rz)) {
# do something here
} else {
if (nchar
Hello, I have following problem in loops. It occurred to me multiple times
bellow is an example. Inside if() I have sometimes function f(x) which may
return integer(0). If I test f(x)>1 and f(x)=integer(0) I get error. Maybe
it can be solved more eloquently without loop or swithces. I don't know.
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