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PC-ORD PC-ORD performs multivariate analysis of ecological data entered in spreadsheets. Our emphasis is on nonparametric tools, graphical representation, randomization tests, and bootstrapped confidence intervals for analysis of community data. HyperNiche HyperNiche is user-friendly software for nonparametric regression. Our primary purpose is to provide a flexible tool for multiplicative habitat modeling – habitat models where the predictors are combined multiplicatively rather than additively. This is a flexible and powerful approach to habitat modeling. 
For in-depth explanation see. Simple, ecologically reasonable response surfaces pose difficult challenges to traditional habitat modeling tools. HyperNiche provides tools that easily find complex response surfaces, such as this hump that combines sigmoid and Gaussian curves.
