[R-sig-eco] Continuous (Non-Count) Skewed Data With Many Zeros

[Rich Shepard]

On Wed, 16 May 2012, Brian S Cade wrote:

> I repeat - check out quantile regression in the quantreg package. If you
> have censored data (below detection limits), there are censored versions
> of quantile regression that can be used, crg() function has 3 alternative
> estimators.

Brian,

   Gotcha'. I'm learning of options that I need to carefully learn and
evaluate. Will install and learn the quantreg package.

Thanks,

Rich

-- 
Richard B. Shepard, Ph.D.          |   Integrity - Credibility - Innovation
Applied Ecosystem Services, Inc.   |    Helping Ensure Our Clients' Futures
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863