I guess you want something like
w=F
z <- c(0,1,2,3,4,5,6,7,8,9)
r <- 7
while(w == F) {
for ( i in 1:10 ){
w <- r == z[i]
print(w)
}
}
But this loop will run forever. The condition for "while" is checked
when i jumps from 10 to 1. At that moment w is always FALSE.
Feng
On 02/01/2012 05:12 PM, Berend Hasselman wrote:
On 01-02-2012, at 16:55, Chris82 wrote:
Hi R users,
is there any possibilty that a while loop is working like that:
z<- c(0,1,2,3,4,5,6,7,8,9)
r<- 7
while(w == T) {
for ( i in 1:10 ){
w<- r == z[i]
print(w)
}
}
The loop should stop if w == TRUE
1. This won't work since the variable w doesn't exist at the start of the while
loop.
2. The while loop condition is incorrect: it should be while( w == FALSE)
3. Don't use T and F. Use TRUE and FALSE.
4. If there is no element of z equal to r the loop will run forever (with the
correct condition of course).
A much better way of doing what you seem to be wanting is
which(z == r)
or possibly
any(z == r)
Berend
--
Feng Li
Department of Statistics
Stockholm University
106 91 Stockholm, Sweden
http://feng.li/
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