// Drawing a Bar Chart of BMC Science Majors
// The data...
int[] nMajors;
String[] majors;

void setup() {
   size(600, 600);
   background(255);
   textSize(12);
   noLoop();

   // Read data from a data file: SciMajors.txt
   // The data file should be created using a Plain Text Editor
   // It should be stored in the Data folder of the sketch
   // Read the data file as an array of strings, each line in a string.
   String[] lines = loadStrings("SciMajors.txt");

   // Create the data arrays depending on how many lines were read from the data file
   println("Read " + lines.length + " entries from data file.");
   nMajors = new int[lines.length];
   majors = new String[lines.length];

   // Parse the strings in line[] into the data arrays
   for (int i = 0; i < lines.length; i++) {
      String[] pieces = split(lines[i], ",");
      majors[i] = pieces[0];
      nMajors[i] = int(pieces[1]);
   }
} // setup()
 

void draw() {
   float minX = 0.05*width;
   float maxX = 0.95*width;
   float minY = 0.05*height;
   float maxY = 0.95*height;

 float N = nMajors.length;
   float barSpace = (maxX - minX)/N;
   float barW = barSpace*0.9;

 float x = minX;
   noFill();
   for (int i=0; i < N; i++) {
      float h = map(nMajors[i], 0, 92, 0, maxY-minY);
      float y = maxY-h;
      fill(0);
      rect(x, y, barW, h);
 
      text(majors[i], x, y+h+10);
      text(nMajors[i], x, y-10);

      x = x + barSpace;
   }
} // draw()