LowerBoundType Property (BDKInput Object)

Description

For continuous data sets, specifies how the lower boundary should be treated during the fitting process. This function does not apply to discrete data sets. By default, the lower boundary type is set to the value of "unsure." You only need to set this property if you want to change this default.

Syntax

object.LowerBoundType

Arguments

None.

Return Value

(BDKBoundaryType) – one of the values:

• BDKBoundTypeUnsure – a combination of BDKBoundTypeUnbounded and BDKBoundTypeBoundedButUnknown, depending on the distribution being fitted. All distribution types can be fit in this mode. This is the default mode.
• BDKBoundTypeUnbounded - the lower bound must extend to negative infinity. Only distributions that are asymptotic to negative infinity can be fit in this mode.
• BDKBoundTypeBoundedButUnknown - the lower bound must be finite, although you want the fitting routines to determine that lower bound. Only distributions that are not asymptotic to negative infinity can be fit in this mode.
• BDKBoundTypeFixed - the lower bound is a fixed known value, which is specified in the LowerBoundValue property. Only distributions that are not asymptotic to negative infinity can be fit in this mode.

Example

'Unsure lower bound
InputObj.LowerBoundType = BDKBoundTypeUnsure
'Fixed Lower bound of 100
InputObj.LowerBoundType = BDKBoundTypeFixed
InputObj.LowerBoundValue = 100