An optional fourth parameter is added to support the version of the beta distribution used in versions later than Crystal Ball 2000.5 (5.5).
cbParmMidpoint [-20] and cbParmDegFreedom [-21] are added to support the Student’s t distribution, added in Crystal Ball 7.0.
Log and geometric mean and standard deviation alternate parameter sets can now be used with lognormal distributions.
Because there are three alternate parameter sets (in addition to percentiles) for the lognormal distribution, the cbParmRegular named constant cannot be passed to CB.DefineAltParms when setting up an alternate parameter set for the lognormal distribution. You must explicitly set the parameter set with, for example, cbParmLogMean and cbParmLogStDev. |
cbParmMode [15] is included to support the Extreme Value distribution for backward compatibility with Crystal Ball 2000.x (5.x). In later versions of Crystal Ball, that distribution is replaced with the Maximum Extreme and Minimum Extreme distributions. cbParmMode is deprecated in this version of Crystal Ball and are obsolete in a future version.
The implementation of DefineAltParms in Crystal Ball 7.x and later versions (including 11.x) is different from Crystal Ball 2000.5 (5.5) in that a different integer is returned for each call even if the parameters are the same. This number is simply a pointer to the alternate parameter set. Code written in Crystal Ball 2000.5 (5.5) should run the same in Crystal Ball 7.2 or later (including 11.x).