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HOF: ECOLOGICAL GRADIENT ANALYSIS USING HUISMAN--OLFF--FRESCO MODELS

Jari Oksanen

Version 2.3


The program HOF fits Huisman-Olff-Fresco models. The models are based on: Huisman,J, Olff,H & Fresco,LFM (1993): A hierarchical set of models for species response analysis. J. Veg. Sci. 4, 37-46. The fitting is done using maximum-likelihood estimation (with Poisson or Binomial error). More complete explanation of the principles of model fitting and interpretation of the results can be found through http://www.helsinki.fi/~jhoksane/. There is no separate manual for the version 2. This readme.txt file explains only the major differences to version 1. The manual for version 1 can be found in the above web address. The program accepts data input as CANOCO-formatted files in condensed, open or ``free'' formats. Start the program writing `hof' in MS-DOS prompt. The program asks for necessary information. However, several other parameters can be changed invoking the program with command line switches. To see the available switches, type `hof -h'.

1. RUNNING HOF

2. MAJOR CHANGES IN HOF v2

3. CREDITS

4. ABOUT THE PROGRAM HOF


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