Hi everybody.
Consider the following exampling code:
x=numeric()
for(i in 1:10){
u=runif(1,-1,2)
x[i]=log(u)
}
This code, in each interation, generates a random value in the (-1,2) interval
and then calculates the log of the value.
When the generated value is less than 0 the log produces a NaN, which gives a
warning.
What I want is to make it start over when a warning is produced, in order to
repeat it until a positive value is generated and therefore the log is
calculated. Logically, would be like: "if there's a warning here, go back at
the beginning and start over", without changing the iteration.
Could someone help me with some directions?
Thanks a lot,
Ricardo
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