UIC

University of Illinois
at Chicago
Code

Caveat Mercator! The code here is provided "as is." I have tried to post bug-free versions; however, I am not in the business of providing free technical support for this code. If there is a glaring error, please let me know; otherwise, the code should be assumed to be of beta quality.

Code for "Modeling Trade Direction"

Also nice (and more generally useful) is the scatter/contour plot R code I used to make some of the plots in this article.
The basic idea is to create a scatterplot; but, in areas where the point density exceeds visual acuity, to instead show contours of point density. Thus we can still see some detail inside a "cloud" of points.

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