gistfile1.txt

float[] volume;
float[] adjClose;

float closeY;
float time;
float index;
float volumeColor;

int width = 512;
int height = 512;


ArrayList<PVector> values;

void setup() {
  size(width, height);
  background(0);
  
  values =  new ArrayList();
  String lines[] = loadStrings("amazon.csv");
  
  // parse data
  volume = new float [lines.length - 1];
  adjClose = new float [lines.length - 1];
  

  for ( int i = 1; i < lines.length; i++) {
    String[] splits = lines[i].split(",");
    
    volume[i - 1] = float(splits[0]);
    adjClose[i - 1] = float(splits[1]);
    
    //println(splits[0] + " " + splits[1]);
  }
  
// map index to x and adjClose to y --> make an image


  
  for (int i = 1; i < lines.length; i++) 
  {
      for (int j = 1; j < adjClose.length; j++) 
      {
        for (int k = 1; k < volume.length; k++) 
        {
        time = map(i, 0, lines.length - 1, 0, width-1);
        closeY = map(adjClose[j], min(adjClose), max(adjClose), 0, height-1); 
        
        //index = time + closeY * width;
        //values[index] = volumeColor;
        
        volumeColor = map(volume[k], min(volume), max(volume), 0, 255);
        //println("index: " + index + " closing: " + closeY);
        
        values.add(new PVector(index, closeY, volumeColor));
        
        }
      }
  }


}

void draw() {
  //println(closeY);
  //println(index);
  //stroke(255);
  
  for (int i = 0; i < values.size(); i++)
     {
       PVector pt = (PVector) values.get(i);
      //int index = x + y*width;
      float rad = map(pt.z, 0, 255, 20, 0); // draw smaller circles at the brighter (higher) spots
      fill(pt.z);
      ellipse(pt.x, pt.y, rad, rad);
      
     }
     
  
}