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Description: Returns a specified parameter value.
Syntax: PARAMETER(Data_Src, Param_index, [Subpop_index], [Confidence Level])
Data_Src is the source data sheet from which the information is taken.
Param_index is the index specifying the parameter to be returned. The parameter index corresponds to the order that the parameters appear in the calculated results in the Folio, as shown in the next table.
Index 1 | Index 2 | Index 3 | Index 4 | |
Weibull | Beta | Eta | Gamma | |
Normal | Mean | Std | ||
Lognormal | LogMean | LogStd | ||
Exponential | Lambda | Gamma | ||
G-Gamma | Mu | Sigma | Lambda | |
Gamma | Mu | K | ||
Logistic | Mu | Sigma | ||
Loglogistic | Mu | Sigma | ||
Gumbel | Mu | Sigma | ||
Weibull-Bayesian | Prior Distribution (see table below) | Parameter1 (see table below) | Parameter2 (see table below) | PstMed / PstMean |
Normal (0) | Lognormal (1) | Exponential (2) | Uniform (3) | |
Parameter1 | Mean | LogMean | Lambda | Min Beta |
Parameter2 | Std | LogStd | Max Beta |
Subpop_index is the index specifying the subpopulation to be used by the function. Use this if the specified data sheet was calculated with a mixed Weibull distribution or competing failure modes.
Confidence Level is the percentage (entered as a decimal value) for the 1-sided confidence bounds.
Remarks:
The Data_Src can be one of the following values:
If using a default data source, it must be either 1, 2, 3 or 4, as selected from the Data Source Index drop-down list.
It can take a data sheet name (e.g., "Folio1!Data 1").
It can take a variable name defined in the Defined Names window (e.g., datasource).
Subpop_index is an optional value and, if specified, must be a positive integer value between 1 and 4.
Confidence Level is an optional value and, if specified, must be greater than 0 and less than 1.
Example:
PARAMETER("Folio1!Data 1", 1, 1, 2) = 2.35
Note that this value will vary depending on the source data set.
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