Logistic Analysis

What is Loglet Lab?

Loglet Lab is a software package for analyzing logistic behavior in time-series data.

Processes of growth and diffusion important for environment often follow a logistic course. In some cases they behave as a series of logistic wavelets, or "loglets." In the easiest cases to recognize, a loglet appears as an S-shaped curve or a succession of many S-shaped curves. When loglets overlap in time, the overall logistic behavior of a system can be hard to discern and analyze.

In niches or markets in which several populations or technologies compete, the growth and decline of each entry also often exhibit logistic behavior. This behavior depends on interactions among the competitors. Namely, if a technology's market share grows, it comes at the cost of shares of others. This process is well-described by the so-called "logistic substitution model." Again, discerning and quantifying the pattern can be hard.

To advance and ease analyses of logistic behavior in time-series data, we have developed the "Loglet Lab" software package. Loglet Lab users can fit logistic curves to a single time-series and apply the logistic substitution model to multiple time-series.

Loglet Lab 2

Loglet Lab 2 is available at no cost under a BSD license. Go to the Loglet Lab 2 page for more details.


Loglet Lab 1.x

LogletLab 1.x ("Loglet Lab for Windows") is the older version of our Loglet Lab software for Windows only. You can Download the Windows installer here.


Interactive Loglet Applet

Back in January 1998, we made an interactive Java applet to demonstrate the properties of logistic curves and curve fitting. It was made to work with the contemporary Windows browsers of the time, Internet Explorer 4.0 and Netscape 4.06; mileage will vary on newer browsers and platforms.

URL: http://phe.rockefeller.edu/LogletLab/index.html
Last updated: Wednesday, 27-May-2015 22:20:58 EDT