Function updateElement

src/plots/polar/polar.js:1581–1589

(sel, showAttr, attrs)

}

function updateElement(sel, showAttr, attrs) {
    if(showAttr) {
        sel.attr('display', null);
        sel.attr(attrs);
    } else if(sel) {
        sel.attr('display', 'none');
    }
    return sel;
}