/*-// EasyPtPlot.java: A simple plot application, plots f(x)-*/
import ptolemy.plot.*;  /*++-//Plotting package-++*/
public class EasyPtPlot
{ public static final double Xmin = -5., Xmax = 5.; /*++-//y range automatic-++*/ 
  public static final int Npoint = 500;
  public static void main(String[] args)
  { Plot plotObj = new Plot(); /*++-// Create ptPlot object-++*/  
    plotObj.setTitle("f(x) vs x");
    plotObj.setXLabel("x");
    plotObj.setYLabel("f(x)");
 /*-// Format: addPoint(int dataSet, double x, double y, boolean connect) -*/
  double xStep = (Xmax - Xmin) / Npoint;
  for (double x = Xmin; x <= Xmax; x += xStep)
  { double y = Math.cos(x);
    plotObj.addPoint(0, x, y, true); } /*++-//Add point-++*/   
  PlotApplication app = new PlotApplication(plotObj); /*++-//Display-++*/
}}