float[][] data = {
  {7.2,7.5,7.6,7.5,7.5,7.4,7.1,7.0,7.0,6.9,6.9,7.1,7.2,7.3,7.1,7.1,7.0,7.2,7.3,7.3},
  {7.4,7.4,7.5,7.3,7.6,7.5,7.5,7.4,7.3,7.3,7.2,7.4,7.5,7.5,7.5,7.4,7.2,7.3,7.5,7.6},
  {7.4,7.5,7.5,7.6,7.6,7.5,7.4,7.5,7.8,7.5,7.5,7.6,7.8,7.8,7.4,7.8,7.9,7.4,7.5,7.5}
  };

float arrayMax(float[][] array){
  float max = array[0][0];
  for (int i=0; i< array.length; i++){
    for (int j=0; j<array[i].length; j++){
      if(array[i][j]> max){
      max = array[i][j];
      }
    }
  }
  return max;
}
    
float arrayMin(float[][] array){
  float min = array[0][0];
  for (int i=0; i< array.length; i++){
    for (int j=0; j<array[i].length; j++){
      if(array[i][j] < min){
      min = array[i][j];
      }
    }
  }
  return min;
}


void printTable(float[][] data, int high, int large){
  fill(0);
  textSize(high/30);
  int margin=(40);
  int cols = data.length;
  int rows = data[0].length;
  int ySpacing = (high-margin)/(rows+1);
  int xSpacing = (large-margin)/(cols);

  for (int i=0; i< cols; i++){
  text("column: "+ i, margin + xSpacing*(i), margin );
    for(int j=0; j< rows; j++){
      text(data[i][j], margin + xSpacing*(i), margin + ySpacing*(1+j));
    }
  }
}



float average(float[] data){
  float sum = 0;
  float average= 0;
  for(int i=0; i < data.length; i++){
    sum= sum + data[i];
  }
  return average = sum/(float)data.length;
}


void printGraph(float[][] data, int large, int high, int x, int y){
  int margin = 40;
  float max = arrayMax( data);
  int xSpacing = (large-2*margin)/((data.length+1)*data[0].length);
  int ySpace = high - 2*margin;
  int yBase = high - margin;
  print(ySpace);

  //create an array with normalized values from data array
  float[][] normalizedArray = new float[data.length][data[0].length];
  for (int i=0;  i<data.length; i++){
    for(int j=0; j<data[i].length; j++){
      normalizedArray[i][j] = data[i][j]/max;
    }
  }
  
  //draws the bars
  for (int i=0; i<data.length; i++){
    fill(0,0,(i+1)*(255/data.length));
    for( int j=0; j<data[i].length; j++){
      rect(x +margin + i*xSpacing+ j *(data.length+1)*xSpacing , yBase - (normalizedArray[i][j]*ySpace) , xSpacing , normalizedArray[i][j]* ySpace);
    }
  }
  
  //draw axis 
  strokeWeight(3);
  textAlign(RIGHT);
  fill(0);
  textSize(high/30);
  line(x+ margin/2, margin, x+ margin/2, yBase);
  line(x + margin/2, yBase, x + large -margin, yBase);
  for (int i=0; i<max+1; i++){
    text(i, x + margin/4, yBase- i*(ySpace/max));
  }
  textAlign(CENTER);
  for(int i=0; i<data[0].length; i++){
    text( i*5, x+margin+ xSpacing +i*(data.length+1)*xSpacing , yBase + margin/2);
  }
  
  
}

  



void setup(){
  size(1600,800);
  background(255);
  float totalAverage=0;
  printTable(data, height, width/3);
  
  //use repetition to average on each experiment 
  float[] averageArray = new float[data.length];
  for (int i =0; i < data.length; i++) {
    averageArray[i]= average(data[i]);
  }


  //use average function to calculate total average
  totalAverage= average(averageArray);
  float max = arrayMax(data);
  float min = arrayMin(data);
  print("Averages of each experiment: " );
  for (int i=0; i< averageArray.length; i++){
    print( averageArray[i] + " ");
  }
  println();
  println("total average: " + totalAverage);
  println("max: " + max);
  println("min: " + min);
  
  printGraph(data, 2*width/3, height, width/3, 0);
}