TExtremeStatisticsSpecification

TExtremeStatisticsSpecification specifies the extreme value statistical model to be fitted to the time history.

typedef struct {

int Size;

int Distribution;

int ExtremesToAnalyse;

double Threshold;

double DeclusterPeriod;

} TExtremeStatisticsSpecification;

Members

Size

Specifies the size, in bytes, of this data structure. Set this member to sizeof(TExtremeStatisticsSpecification) before calling a function with TExtremeStatisticsSpecification as a parameter.

Distribution

Specifies the statistical distribution. Can be evdRayleigh, evdWeibull or evdGPD.

ExtremesToAnalyse

Can be either exUpperTail or exLowerTail.

Threshold

The threshold used by the peaks over threshold declustering algorithm.

Only used for the evdWeibull and evdGPD distributions.

DeclusterPeriod

The decluster period used by the peaks over threshold declustering algorithm. One of the following values can be used:

Zero: no declustering will be performed.
A positive value: runs declustering is performed using a run length determined by the specified decluster period.
OrcinaDefaultReal(): declustering is based on mean up-crossings (or down-crossings for lower tail analyses).