choice-metrics.com

Thank you so much Michiel!

Hello Everyone,

I'm designing a survey to understand traveler's transport mode choice behaviors. I did three different designs, as elaborated below.

(1) Orthogonal design
a solution was quickly found by Ngene with a warning message, stating 12 rows are impossible, so 72 rows were generated ...

Same here.

Thanks.

Thanks a lot, Michiel and Andrew.
I was new to Ngene. So, I wanted to use some simple example to test output from Ngene with the mannual calculation. That's how I caught that bug.

Anyway, I agree that in practice few people would be interested in doing a full factorial design.

Hi everyone,

I recently purchased Ngene and is learing to make some simple SP designs.

One simple question:

I can run the following codes without error:

Design
? This will generate a full factorial design
;alts = alt1, alt2
;rows = all
;fact
;model:
U(alt1) = b1 + b2 * A[0,1,2] /
U(alt2) = b3 ...