var dataset = [["alaska", "coal", 30, 60], ["alaska", "coal", 20, 50], ["alaska", "hydro", 10, 1], ["alaska", "geo", 20, 2], ["colorado", "hydro", 15, 0], ["colorado", "bio", 22, 7], ["iowa", "bio", 46, 22], ["iowa", "bio", 37, 19], ["arkansas", "bio", 22, 12], ["mississippi", "hydro", 25, 0], ["mississippi", "hydro", 4, 0], ["westvirginia", "coal", 70, 41], ["westvirginia", "coal", 33, 12], ["maine", "geo", 12, 1]];
var locations = {"alaska": -134.419740, "colorado": -104.984167, "iowa": -93.620866, "arkansas": -92.331122, "mississippi": -90.207, "westvirginia": -81.633294, "maine": -69.765261};
var colors = {"coal": "rgb(0, 0, 0)", "hydro": "rgb(70, 70, 255)", "geo": "rgb(139, 69, 19)", "bio": "rgb(70, 255, 70)"};