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Title: HYFRAN software - INFORMATION PAGE
Author: Chair in Statistical Hydrology, INRS-ETE, (B. Bobée et al.)
Specifications: Version 1.1 bêta 1, (available in French, English, Spanish), Download Demo copy + Additional Information
Cat No: HYFRAN •••• Price: US $200

HYFRAN (HYdrological FRequency ANalysis) is a software used to fit statistical distributions. It includes a number of powerful, flexible, user-friendly mathematical tools that can be used for the statistical analysis of extreme events. It can also perform more basic analysis of data time series.
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DESCRIPTION: HYFRAN is available in three languages French, English and Spanish. (French version 1,701 Mo, English 1,635 Mo Spanish 1,647 Mo). It was initially designed for frequency analysis of extreme events, HYFRAN can be used in any study that requires fitting of statistical distribution to an independent and identically distributed data series. Applications are found in various technical areas such as engineering, environment, meteorology, medical sciences, etc.

Advanced Functions
-- Verification of statistical hypotheses:
• Independence of data series

Homogeneity of data series (series time step, statistical hypotheses,seasonal effect)
Detection of trends
Detection of outliers

Goodness of fit of selected distributions
-- Large number of statistical probability distributions:

Gamma family:
Gamma
Inverse Gamma
Generalized Gamma
Pearson type III
Log Pearson type III

-- Other distributions:

Exponential
Weibull
Generalised Extreme Value (GEV)
Compound Poisson exponential (lois des fuites)
Normal
Gumbel
Halphen (A, B, B-1)
Generalized Pareto
Lognormal (2 or 3 parameters)
   -- Mixed distribution:
Lognormal and Weibull, modified to take null values into account.
-- Numerous fitting methods:
Method of Moments (normal/weighed)
Method of Moments (WRC, SAM, BOB)
Method of Maximum Likelihood
Estimation of quantiles XT of return period T with confidence intervals

Characteristics
-- User-friendly interface (Windows)
-- Object oriented approach
-- Specialized graphic outputs:

Time series
Probability paper plots
Histograms
Fitting with confidence intervals
Comparison of fitted distributions

SUMMARY

Criteria
Statistical distributions:
Validation tests:
Comparison of distribution:
Standards graphic outputs:
User Interface:
Environment:
Worksheet compatibility:
Support :

  

HYFRAN
16
5
2 to 5 distributions
5
Windows
Windows
Excel and Quattro Pro
E-mail, Fax





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