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Create beta distribution with 4 parameters?

Mar 18, 2014 at 7:00 PM

I need to create a beta distribution using 4 parameters (alpha, beta, lower bound, upper bound). I don't see an overload in your beta distribution that allows me to do that. Am I missing something, or in the current implementation am I limited to just a 2 parameter beta distribution?

Thanks in advance!
Mar 21, 2014 at 6:43 PM

The Beta distribution indeed does not support the 4-parameter variant yet. The transformation with the two bounds is quite straightforward. However, we should consider to add full support for this variant as it does seem to be quite common (even Excel supports a 4-parameter variant). You may want to open an issue on Github for this.