Syntax Error While Working With AccelLog Program

In that case something like this should do it:

// draw the value to the screen - this could definitely be improved!
function updateScreen() {
  g.reset();
  g.clearRect(0,100,240,140);
  g.setFontVector(20).setFontAlign(0,0);
  g.drawString(maxValue.toFixed(1),120,120­)
}

function accelHandler(accel) {
  var t = getTime()-start;
  // get the actual magnitude
  var mag = Math.sqrt(accel.x*accel.x + accel.y*accel.y + accel.z*accel.z);
  // if it's bigger, update the max value and screen
  if (mag > maxValue) {
    maxValue = mag;
    updateScreen();
  }
}

setWatch(function() {
  // write time and max value
  f.write([
    t*1000,
    maxValue].join(",")+"\n");
  // reset the values
  maxValue = 0;
  updateScreen();
}, BTN2, {repeat:true});