Wei Zhu

Many thanks for your rapid reply. Best, -Wei From: Brent Pedersen Reply-To: brentp/goleft Date: Friday, July 19, 2019 at 10:59 AM To: brentp/goleft Cc: Wei Zhu , Author Subject: Re:...

Riccardo; Thank you for the reply, which is very helpful. Actually, I had figured out to use the solution two, following the Rstudio example. Nevertheless, your reply makes me more...