Error message

| Hi.
|  
| I have this error message:
|  
| Error in if (Y > 0) { : missing value where TRUE/FALSE needed
|  
| when I?m trying to run this code.

We know as you already told us two days ago.  

I'd start by examining my data and remove __missing values__ as the code you
are using apparently does not digests data containing missing values.  The
summary(), is.finite() and which() functions may all be of help here.

I am not familiar with the function itself so this may be of limited actual
help to you. 

Good luck, Dirk

Hell, there are no rules here - we're trying to accomplish something. 
                                                  -- Thomas A. Edison