Data Set and Program Links
Data Sets (SAS):
These data sets have been used in many of my social science writings.
They are all in the SAS format.
These programs are written in SAS and have been used to perform numerically
intensive parameter estimations that have been presented in some of my
writings. The programs come in varieties that fit both difference equations
and differential equatioins. They can serve as templates for others who
wish to work with models requiring such estimation strategies.
Graphics Programs (R, SAS, and Think Pascal):
These programs produce graphical output and analysis for highly nonlinear
models of social and political change. Mathematical theories addressed
by the programs include chaos and catastrophe theories, as well as the
theory of ordinary differential equations. These programs are written
in R, SAS, and Think Pascal. Some of the R and SAS programs can be cut-and-pasted
to produce working templates for other graphics. Think Pascal
no longer exists (to my knowledge), but the programs written in that language
can be examined to give insight into how I produced some of the specialized
graphics that I have presented in some of my books and articles.
Statistical Programs in R
These programs are part of my outreach to the larger R community, and they complement some of the R tutorials that I have created.