- Function Gamma(Shape, Lowerbound, Scale)¶
Gamma¶
The function Gamma
draws a random value from a gamma distribution.
Gamma(
Shape, ! (input) numerical expression
Lowerbound, ! (optional) numerical expression
Scale ! (optional) numerical expression
)
Arguments¶
- Shape
A scalar numerical expression \(> 0\).
- Lowerbound
A scalar numerical expression \(> 0\).
- Scale
A scalar numerical expression \(> 0\).
Return Value¶
The function
Gamma
returns a random value drawn from a gamma distribution with shape Shape, lower bound Lowerbound and scale Scale.
Note
The prototype of this function has changed with the introduction of
AIMMS 3.4. In order to run models that still use the original prototype,
the option Distribution_compatibility
should be set to
Aimms_3_0
. The original function Gamma
(alpha, Shape)
returns a random value drawn from a gamma distribution with rate
\(alpha = 1/Scale\), shape Shape and lower bound \(0\).
See also
The Gamma
distribution is discussed in full detail in Discrete Distributions of
the Language Reference.