Conclusion

Logistic Growth and Substitution: The Mathematics of the

Loglet Lab Software Implementation

The algorithms and methods described in this paper were originally implemented in ANSI C and the mathematics package MatLab [13] in a Unix computer enviroment. Many of the algorithms are based on the C source code presented in Press, et al. [17] and Engeln-Müllges-Uhlig [5].

The Loglet Lab software project's goal is to integrate these
algorithms into a single GUI ^{6}
application for use on a modern operating system, namely Microsoft
Windows 95 and NT. To this end, Loglet Lab was built in Microsoft's
Visual C++ integrated development environment and features spreadsheet
and charting modules developed by Visual Components. This provides a
familiar interface for data entry as well as instant charting. Loglet
Lab allows users to cut-and-paste their data between spreadsheets such
as Excel and the graphics between business presentation programs such
as PowerPoint. Appendix B describes the current state of this
project.

Other advanced regression methods (e.g., Marchetti's method for robust weighted regression, or regression) have been implemented in C or MatLab, but they have yet to be ported to the Win32 environment.