types[yField] = Converter.TYPE.DOUBLE;
if (colorField >=0) {types[colorField] = Converter.TYPE.COLOR;}
if (valueField >=0) {types[valueField] = Converter.TYPE.DOUBLE;}
Valuer valuer;
if (valField >=0) {valuer = new Indexed.ToValue<Indexed,T>(valField);}
else {valuer = new Valuer.Constant<>(Color.red);}
return Util.load(