Example usage for org.apache.commons.math3.linear RealVectorFormat format

Introduction

In this page you can find the example usage for org.apache.commons.math3.linear RealVectorFormat format.

Prototype

NumberFormat format

To view the source code for org.apache.commons.math3.linear RealVectorFormat format.

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Document

The format used for components.

Usage

From source file:jat.examples.TwoBodyExample.TwoBodyExample.java

public static void main(String[] args) {

    TwoBodyExample x = new TwoBodyExample();

    // create a TwoBody orbit using orbit elements
    TwoBodyAPL sat = new TwoBodyAPL(7000.0, 0.3, 0.0, 0.0, 0.0, 0.0);

    double[] y = sat.randv();

    ArrayRealVector v = new ArrayRealVector(y);

    DecimalFormat df2 = new DecimalFormat("#,###,###,##0.00");
    RealVectorFormat format = new RealVectorFormat(df2);
    System.out.println(format.format(v));

    // find out the period of the orbit
    double period = sat.period();

    // set the final time = one orbit period
    double tf = period;

    // set the initial time to zero
    double t0 = 0.0;

    // propagate the orbit
    FirstOrderIntegrator dp853 = new DormandPrince853Integrator(1.0e-8, 100.0, 1.0e-10, 1.0e-10);
    dp853.addStepHandler(sat.stepHandler);
    // double[] y = new double[] { 7000.0, 0, 0, .0, 8, 0 }; // initial
    // state/*from www.  ja v  a2s  .  c o m*/

    dp853.integrate(sat, 0.0, y, 8000, y); // now y contains final state at
    // tf

    Double[] objArray = sat.time.toArray(new Double[sat.time.size()]);
    double[] timeArray = ArrayUtils.toPrimitive(objArray);
    double[] xsolArray = ArrayUtils.toPrimitive(sat.xsol.toArray(new Double[sat.time.size()]));
    double[] ysolArray = ArrayUtils.toPrimitive(sat.ysol.toArray(new Double[sat.time.size()]));

    double[][] XY = new double[timeArray.length][2];

    // int a=0;
    // System.arraycopy(timeArray,0,XY[a],0,timeArray.length);
    // System.arraycopy(ysolArray,0,XY[1],0,ysolArray.length);

    for (int i = 0; i < timeArray.length; i++) {
        XY[i][0] = xsolArray[i];
        XY[i][1] = ysolArray[i];
    }

    Plot2DPanel p = new Plot2DPanel();

    // Plot2DPanel p = new Plot2DPanel(min, max, axesScales, axesLabels);

    ScatterPlot s = new ScatterPlot("orbit", Color.RED, XY);
    // LinePlot l = new LinePlot("sin", Color.RED, XY);
    // l.closed_curve = false;
    // l.draw_dot = true;
    p.addPlot(s);
    p.setLegendOrientation(PlotPanel.SOUTH);
    double plotSize = 10000.;
    double[] min = { -plotSize, -plotSize };
    double[] max = { plotSize, plotSize };
    p.setFixedBounds(min, max);

    new FrameView(p).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    System.out.println("end");

}

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From source file:iitg.cs570.assign2.webgraph.DocVector.java

@Override
public String toString() {
    RealVectorFormat formatter = new RealVectorFormat();
    return formatter.format(vector);
}

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