Matthieu

thanks! But I ran it once, and didn't see an error? Could you make sure to make it minimal, and self-reproducible? Also, please use `reprex::reprex()` and paste the output, such...

almost there! Not sure why but copy/pasting the output did not preserve the format, see below with output. So ok, it's a bug indeed, confirmed, thanks for the report. I...

I don't think the bug was there before, though you could test that. The best is to try some debugging: 1. read about debugging tools 2. find an example where...

Sorry, your code is not reproducible. See [How to make a great R reproducible example](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example) Here is a minimal reproducible code using `reprex()`, where the code works fine: ``` r...

@Justinxi , your example is unfortunately still not self-reproducible. :-( I thought the link [How to make a great R reproducible example](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example) provided clear guidelines about reproducibility? But well, can...

good job! Now we have a reproducible example, and I confirm this is a bug. I will need to look into this

Hi James This feature has indeed not been implemented a while ago when I was working on this package. Main reason was that I had not found the relevant paper/formula...

Hi James Someone asked the same question in the (ow to be deprecated) google groups. It has been a long time I worked on that, but in my memory, I...

I think you are making a right point about the (complicated) interpretation of the parameters. But what about the more basic question of identification? It seems to me having a...

Sorry for very slow response. Can you please indicate which model(s) you were referring to?