CumGamma
new to Analytica 5.0
CumGamma( x, a, b )
The Cumulative Distribution Function for the Gamma(«a», «b») distribution. Returns the probability that a number sampled at random from a Gamma(«a», «b») distribution is less than or equal to «x».
This function is the same as the incomplete gamma function, GammaI(x,a,b) for x>0. In is provided as a synonym for consistency with the naming of analytic cumulative distribution functions.
Library
Distribution Densities Library
You must add this library to your model in order to be able to use CumGamma. You can use GammaI without adding the library.
History
The incomplete gamma function, GammaI, has been available since Analytica 2.0. This synonymous function was added to the Distribution Densities Library with release Analytica 5.0 so that there would be a consistent naming convention with the other analytic distribution functions for other distributions. To be compatible with pre-5.0 releases, use GammaI.
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