for(var i=0; i<newSize; i++)
      data.push({"data":date[i],"voto":grade[i],"nome":subject[i]});

carStarWidth  = document.getElementById('careerStarPath').offsetWidth;
carStarHeight = document.getElementById('careerStarPath').offsetHeight;

drawStarPath('#careerStarPath',carStarWidth,carStarHeight,data);