// Learning Processing
  // Daniel Shiffman
  // http://www.learningprocessing.com
  
  // Example 13-9: Two-dimensional array
  
  // Set up dimensions
  size(200,200);
  int cols = width;
  int rows = height;
  
  // Declare 2D array
  int[][] myArray = new int[cols][rows];
  
  // Initialize 2D array values
  for (int i = 0; i < cols; i ++ ) {
    for (int j = 0; j < rows; j ++ ) {
      myArray[i][j] = int(random(255));
    }
  }
  
  // Draw points
  for (int i = 0; i < cols; i ++ ) {
    for (int j = 0; j < rows; j ++ ) {
      stroke(myArray[i][j]);
      point(i,j);
    }
  }