Richard John Smith

7 Questions 37 Answers 0 Followers

Questions related from Richard John Smith

How to calculate conditional treatment effects with a treatment covariate interaction in Stata 14 with complex survey data?

From the teffects documentation in Stata 14, I see that the margins command may be used to calculate the conditional ATE or ATET for a subpopulation for etpoisson and etregress. Both etpoisson and...

06 June 2016 4,929 2 View

What's the best package in R for calculating the distance between two polygons? Should I convert the polygons to points first?

Specifically, if I have the US Census place layer and I have selected a set of places, I need the distance to the nearest selected place for all places.

02 February 2016 972 4 View

Is there a heuristic for determining the optimal number of cluster using R's agnes command and the dendogram plot?

I'm using agnes to cluster my data using the ward method. The dendogram returns clusters ordered by height and an agglomerative coefficient. My reading of Struyf, Hubert, & Rousseeuw (1997) is...

07 July 2014 7,508 4 View

How do I take a saved scalar in Stata and use it as a variable in a subsequent command?

I know how to save, list, or display a scalar. But when I try to embed these commands within xtgee, I get an error. Specifically, I am following Joseph Hllbe's negative binomial text and...

12 December 2013 629 2 View

Has anyone already wrote an R package that does panel negative binomial regression using a population averaged model (GEE)?

I have a pre-post treatment and comparison quasi-experiment for business foundings and failures.I have been able to use xtnbreg or xtgee in Stata to estimate this regression, but I would like to...

11 November 2013 2,767 1 View

Can anyone help with multinomial spatial neighbor relationships?

In spatial models, a neighbor relationship is usually binary. Two areal units are neighbors or they are not. This is called the W or weight matrix. This matrix may be standardized (e.g. row...

11 November 2013 1,747 3 View

2019 Ecocity World Summit Conference Abstract Reviewers Needed

I am serving on the program committee for the 2019 Ecocity World Summit and would love for you to participate and submit an abstract (http://ecocity2019.com/program/abstract-guidelines/). We are...

01 January 1970 6,778 3 View