org.datasyslab.geospark.spatialPartitioning.EqualPartitioning Maven / Gradle / Ivy

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Geospatial extension for Apache Spark

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/**
 * FILE: EqualPartitioning.java
 * PATH: org.datasyslab.geospark.spatialPartitioning.EqualPartitioning.java
 * Copyright (c) 2017 Arizona State University Data Systems Lab
 * All rights reserved.
 */
package org.datasyslab.geospark.spatialPartitioning;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import com.vividsolutions.jts.geom.Envelope;

// TODO: Auto-generated Javadoc
/**
 * The Class EqualPartitioning.
 */
public class EqualPartitioning implements Serializable{

	/** The grids. */
	List grids=new ArrayList();

	
	/**
	 * Instantiates a new equal partitioning.
	 *
	 * @param boundary the boundary
	 * @param partitions the partitions
	 */
	public  EqualPartitioning(Envelope boundary,int partitions)
	{
		//Local variable should be declared here
		Double root=Math.sqrt(partitions);
		int partitionsAxis;
		double intervalX;
		double intervalY;

		//Calculate how many bounds should be on each axis
		partitionsAxis=root.intValue();
		intervalX=(boundary.getMaxX()-boundary.getMinX())/partitionsAxis;
		intervalY=(boundary.getMaxY()-boundary.getMinY())/partitionsAxis;
		//System.out.println("Boundary: "+boundary+"root: "+root+" interval: "+intervalX+","+intervalY);
		for(int i=0;i getGrids() {
		
		return this.grids;
		
	}
}