More on re-directing input/output

1. Include this PlotFilter in your project

   /******************************************************************************
    *  Compilation:  javac PlotFilter.java
    *  Execution:    java PlotFilter < input.txt
    *  Dependencies: StdDraw.java StdIn.java
    *  
    *  % java PlotFilter < USA.txt
    *
    *  Datafiles:    http://introcs.cs.princeton.edu/java/15inout/USA.txt
    *
    ******************************************************************************/
   
   public class PlotFilter { 
   
       public static void main(String[] args) {
   
           // read in bounding box and rescale
           double x0 = StdIn.readDouble();
           double y0 = StdIn.readDouble();
           double x1 = StdIn.readDouble();
           double y1 = StdIn.readDouble();
           StdDraw.setXscale(x0, x1);
           StdDraw.setYscale(y0, y1);
   
           // for bigger points
           StdDraw.setPenRadius(0.005);
   
           // to speed up performance, defer displaying points
           StdDraw.enableDoubleBuffering();
   
           // plot points, one at a time
           while (!StdIn.isEmpty()) {
               double x = StdIn.readDouble();
               double y = StdIn.readDouble();
               StdDraw.point(x, y);
           }
   
           // display all of the points now
           StdDraw.show();
   
       }
   }
   
   

2. Create a text file with the data from the link below. Right-click on the middle of the page and “save as” in your project folder.
   USA.txt
   

Assignments:
Standard Drawing

Use the java programs from the lesson, Triangle.java, PlotFilter.java, and FunctionGraph.java to work on the assignments posted on edmodo.com.

MyPlotFilter_YI.java
Use PlotFilter.java from Filtering data to a standard drawing to create your own drawing.

Read about Standard drawing and the Methods Summary