Package com.opttek.optquest

Class COptQuestSphericalElevationRandomVariable

java.lang.Object

com.opttek.optquest.COptQuestVariable

com.opttek.optquest.COptQuestUserControlledVariable

com.opttek.optquest.COptQuestSphericalElevationRandomVariable

public class COptQuestSphericalElevationRandomVariable
extends COptQuestUserControlledVariable

A random variable whose value is an elevation angle in degrees, drawn uniformly by surface area from the band of the unit sphere between the elevations min and max. Uniform by surface area, rather than uniform by angle, means that values near the horizon are more likely than values near the poles. This is the elevation of a random pointing direction on a band of the sphere. An elevation of -90 is straight down, 0 is the horizon and +90 is straight up. The bounds must be within [-90, 90], and max must be greater than min. The constructor that takes only a name uses the full range.

The probability density is proportional to the cosine of the elevation, scaled so that the total probability from min to max is 1.

The engine draws a new value at the start of every replication. The probability distribution is COptQuestSphericalElevationDistribution.

See Also:

• OptQuestModel.AddSphericalElevationRandomVariable(String, double, double)
• COptQuestSphericalElevationDistribution

Constructor Summary

Constructors

Constructor	Description
COptQuestSphericalElevationRandomVariable(String name)	Constructs a new spherical elevation random variable for the full sphere (elevation range [-90°, 90°]).
COptQuestSphericalElevationRandomVariable(String name, double min, double max)	Constructs a new spherical elevation random variable over the specified elevation range in degrees.

Method Summary

Methods inherited from class com.opttek.optquest.COptQuestUserControlledVariable

GetReplicationStatistic, GetReplicationStatisticValue, SetExclusiveRange, SetLowerBound, SetReplicationStatistic, SetUpperBound

Methods inherited from class com.opttek.optquest.COptQuestVariable

equals, GetDOELowerBound, GetDOEUpperBound, GetExclusiveLowerBoundAt, GetExclusiveUpperBoundAt, getID, GetLowerBound, GetName, GetNumberOfExclusiveRanges, GetStepSize, GetSuggestedValue, GetUpperBound, getVarRange, hashCode, isZeroOne, SetName

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

COptQuestSphericalElevationRandomVariable

public COptQuestSphericalElevationRandomVariable(String name,
 double min,
 double max)
                                          throws COptQuestException

Constructs a new spherical elevation random variable over the specified elevation range in degrees.

Parameters:

name - the name/identifier of this random variable (used for reporting, logging, or display purposes)

min - minimum elevation angle in degrees (≥ -90)

max - maximum elevation angle in degrees (≤ 90, must be > min)

Throws:

COptQuestException

COptQuestSphericalElevationRandomVariable

public COptQuestSphericalElevationRandomVariable(String name)
                                          throws COptQuestException

Constructs a new spherical elevation random variable for the full sphere (elevation range [-90°, 90°]).

Parameters:

name - the name/identifier of this random variable (used for reporting, logging, or display purposes)

Throws:

COptQuestException