private String getSymbol() {
String result = ModelUtil.getElementSymbol(vis);
if (result != null) return result;
// We default to a rectangle if all the scales are categorical or binned, otherwise we return a
// point
boolean cat =
allShowExtent(positionFields.allXFields) && allShowExtent(positionFields.allYFields);
return cat ? "rect" : "point";
}
