Package org.vanted.plugins.layout.stressminimization

Class StressMinimizationImplementation

java.lang.Object

org.vanted.plugins.layout.stressminimization.StressMinimizationImplementation

public class StressMinimizationImplementation
extends Object

Constructor Summary

Constructors

Constructor	Description
StressMinimizationImplementation(IndexedNodeSet nodes, StressMinimizationLayout callingLayout, boolean useLandmarks, int numberOfLandmarks, int alpha, double stressChangeEpsilon, double initialStressPercentage, double minimumNodeMovementThreshold, double iterationsThreshold, int edgeScalingFactor)	Creates a new StressMinimizationImplementation working on the given list of nodes and using callingLayout for pausing and stopping behavior

Method Summary

Modifier and Type	Method	Description
org.apache.commons.math3.linear.RealVector	calcDistances(int fromIndex)	Calculates the distance vector from the node at the specified index to all other nodes.
org.apache.commons.math3.linear.RealMatrix	calcPairwiseDistances(IndexedNodeSet nodes)	Calculates the distance matrix of the given nodes set.
void	calculateLayout()	Calculates an optimized layout for this instances nodes.
Supplier<HashMap<Node,Vector2d>>	getLayoutSupplier()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

StressMinimizationImplementation

public StressMinimizationImplementation(IndexedNodeSet nodes,
StressMinimizationLayout callingLayout,
boolean useLandmarks,
int numberOfLandmarks,
int alpha,
double stressChangeEpsilon,
double initialStressPercentage,
double minimumNodeMovementThreshold,
double iterationsThreshold,
int edgeScalingFactor)

Creates a new StressMinimizationImplementation working on the given list of nodes and using callingLayout for pausing and stopping behavior

Parameters:

nodes - The nodes to layout.

callingLayout - The StressMinimizationLayout instance creating this instance

numberOfLandmarks -

alpha - alpha exponent for weighting.

stressChangeEpsilon - Stress change threshold below which execution will be terminated

initialStressPercentage - The initial stress percentage below which execution will be terminated

minimumNodeMovementThreshold - The minimum node movement threshold below which execution will be terminated

iterationsThreshold - The maximal number of iterations above which execution will be terminated

Method Details

calculateLayout

public void calculateLayout()

Calculates an optimized layout for this instances nodes.

calcPairwiseDistances

public org.apache.commons.math3.linear.RealMatrix calcPairwiseDistances(IndexedNodeSet nodes)

Calculates the distance matrix of the given nodes set.

Parameters:

nodes - A list of nodes. For these nodes the distances to the other nodes in the set will be calculated.

Returns:

the distance matrix

calcDistances

public org.apache.commons.math3.linear.RealVector calcDistances(int fromIndex)

Calculates the distance vector from the node at the specified index to all other nodes.

Parameters:

fromIndex - the distances from this node to all others will be calculated.

Returns:

the distance vector from the from node to all others

getLayoutSupplier

public Supplier<HashMap<Node,Vector2d>> getLayoutSupplier()