package org.jzy3d.maths.algorithms;

import org.jzy3d.maths.Scale;
import org.jzy3d.maths.Statistics;

public class ScaleFinder {
	
	/**
	 * Apply an outlier remover on input data ({@link OutlierRemover.getInlierValues})
	 * and retrieve the min and max values of the non-rejected values.
	 * 
	 * @param values
	 * @param nVariance
	 * @return
	 */
	public static Scale getFilteredScale(double[] values, int nVariance){
		double[] inliers = OutlierRemover.getInlierValues(values, nVariance);
		
		return getMinMaxScale(inliers);
	}
	
	/** 
	 * Simply returns the min and max values of the input array into
	 * a Scale object.
	 * 
	 * @param values
	 * @return
	 */
	public static Scale getMinMaxScale(double[] values){
		if(values.length==0)
			return new Scale(Float.NaN, Float.NaN);
		return new Scale((float)Statistics.min(values), (float)Statistics.max(values));
	}
}