I am using openBUGS for MCMC simulation but while running my codes I get an error "something went wrong in procedure LN in math module". While running the same code in WinBUGS, i got a new window named trap with undefined real results and many more rows. I am not able to understand what exactly wrong in my code.
```
model
{
for(i in 1:N)
{
fa[i]
Andrey Davydenko
Perhaps, it's because the log function is applied to a negative number. Try abs -- in case of no error, it's because of the negative numbers passed as an argument for log. Would be great to see mathematical equations for the model as well.
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David Eugene Booth
I don't know for sure but undefined is often the result if you divide by zero. best, D. Booth
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