VectorInRect.java 

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package blog.distrib;

import java.util.*;
import Jama.Matrix;
Function that takes a column vector as an argument and returns true if the vector is in a certain rectangle. The rectangle is specified by the parameters to the constructor. These parameters should be a list of real numbers (min_1, max_1, min_2, max_2, ..., min_d, max_d). Then the function returns true on (x_1, x_2, ..., x_d) if min_1 ≤ x_1 ≤ max_1, ..., and min_d ≤ x_d ≤ max_d. 


public class VectorInRect extends blog.AbstractFunctionInterp {
Creates a new VectorInRect function interpretation with min and max values for each dimension specified by the given parameter list.

Parameters: 
params - list of Number objects


    public VectorInRect(List params) {
	if (params.size() % 2 != 0) {
	    throw new IllegalArgumentException
		("VectorInRect expects an even number of parameters, "
		 + "forming min-max pairs.");
	}

	int d = params.size() / 2;
	mins = new double[d];
	maxes = new double[d];

	for (int i = 0; i < d; ++i) {
	    mins[i] = ((Number) params.get(2*i)).doubleValue();
	    maxes[i] = ((Number) params.get((2*i) + 1)).doubleValue();
	}
    }
Returns Boolean.TRUE if the first element of args is a column vector (i.e., a Matrix with one column) in the specified rectangle; otherwise returns Boolean.FALSE. 


    public Object getValue(List args) {
	if (args.size() != 1) {
	    throw new IllegalArgumentException
		("VectorInRect expects exactly one argument.");
	}

	Matrix v = (Matrix) args.get(0);
	if ((v.getRowDimension() != mins.length)
	        || (v.getColumnDimension() != 1)) {
	    throw new IllegalArgumentException
		("Argument to VectorInRect should be " + mins.length
		 + "x1 vector, not " + v.getRowDimension() + "x"
		 + v.getColumnDimension() + "matrix.");
	}

	for (int i = 0; i < mins.length; ++i) {
	    if ((v.get(i, 0) < mins[i]) || (v.get(i, 0) > maxes[i])) {
		return Boolean.FALSE;
	    }
	}
	return Boolean.TRUE;
    }
    
    private double[] mins;
    private double[] maxes;
}

This file was generated on Tue Jun 08 17:53:48 PDT 2010 from file VectorInRect.java
by the ilog.language.tools.Hilite Java tool written by Hassan Aït-Kaci