"Unexpected token: float" I dont understand why this is the case.

Hi, I'm receiving this error in the line 69 that reads "float yoffset = (height - b) ) / height;", but I'm not sure why. Can someone help?

//import libraries

PImage img;

import ddf.minim.*;
import ddf.minim.ugens.*;

Minim       minim;
AudioOutput out;
Oscil       wave;

//display image

void setup() {
  size(800, 800);
  img = loadImage("MarsMapSection.jpg");
  //noise = new WhiteNoise(this);
  //noise.play();

    minim = new Minim(this);

  // use the getLineOut method of the Minim object to get an AudioOutput object
  out = minim.getLineOut();

  // create a sine wave Oscil, set to 440 Hz, at 0.5 amplitude
  wave = new Oscil( 440, 0.5f, Waves.SINE );
  // patch the Oscil to the output
  wave.patch( out );
}

void draw() {

  loadPixels();
  // Since we are going to access the image's pixels too
  img.loadPixels();
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      int loc = x + y*width;

      // The functions red(), green(), and blue() pull out the 3 color components from a pixel.
      float r = red(img.pixels[loc]);
      float g = green(img.pixels[loc]);
      float b = blue(img.pixels[loc]);

      // Image Processing would go here
      // If we were to change the RGB values, we would do it here,
      // before setting the pixel in the display window.

      // Set the display pixel to the image pixel
      pixels[loc] =  color(r,g,b);
    }
  }

   float r = red(img.pixels[mouseY*width+mouseX]);
   float b =blue(img.pixels[mouseY*width+mouseX]);
   float g =green(img.pixels[mouseY*width+mouseX]);
    println("r" + r);
    println("b" + b);
    println("g" + g);


}
void mouseMoved(){
  // usually when setting the amplitude and frequency of an Oscil
  // you will want to patch something to the amplitude and frequency inputs
  // but this is a quick and easy way to turn the screen into
  // an x-y control for them.

  float yoffset = (height - b ) / height;
  float freq = pow( 3, r ) + yoffset;
  wave.setFrequency( freq );

  float amp = map( mouseX, 0, width, 1, 0 );
  wave.setAmplitude( amp );

 // float freq = map( mouseX, 0, width, 110, 880 );


 // float yoffset = (height - mouseY) / float(height);
 // float freq = pow(1000, yoffset) + 150;

 // float amp = map( mouseX, 0, width, 1, 0 );
 // wave.setAmplitude( amp );

 // float freq = map( mouseX, 0, width, 110, 880 );
 // wave.setFrequency( freq );
}