Diversity
Fast entry and analysis of ecological data
$9.99
Version 1.4 - now with search!
Diversity is a tool for entering and inspecting ecological data, and for measuring various aspects of diversity in a sample of organisms. Diversity uses rarefaction to produce estimates of species richness and to produce rarefaction curves with confidence limits. Comparative plots of samples can also be produced. Diversity can also be used to calculate a variety of other measures of diversity including evenness, Shannon's entropy, Pielou's J, Peters' Ess, and several others. Data can be easily imported and exported to other programs. Read more about Diversity and watch it in action.
Requires Mac OS X 10.5+
Analytic Rarefaction
Quick individual-based rarefaction
Version 2.0 - now even easier to use!
Analytic Rarefaction allows you to estimate diversity in a sample smaller that what you obtained. This new version has a simpler and more flexible user interface, allowing you to use files of species abundance in many different formats and without restrictions on file names or file locations. Read more about Analytic Rarefaction and how to use it.
Requires Mac OS X 10.5+
Margin of Error
Error bars for percentages made easy
Margin of Error produces confidence intervals for percentages. You supply the observed percentage, the sample size, and the confidence level, and Margin of Error will you give you the upper and lower confidence limit. Use this whenever you want to convey the uncertainty in any estimate of percentage. Read more about Margin of Error and how to use it.
Requires Mac OS X 10.4+
Locator
Quickly find a location with GPS coordinates
Locator can take a set of latitude and longitude coordinates and produce a URL for Google Maps that can be pasted into any other program, including a web page or e-mail. It will also show that location in Google maps. Locator can accept coordinates written as decimal degrees, degrees with decimal minutes, or as degrees-minutes-seconds. It can display a location at any zoom level for a regular map, an aerial photo or satellite image, a hybrid photo-map, or a terrain map. Read more about Locator and how to use it.
Requires Mac OS X 10.5+