, , -
google.visualization.events.addListener(chart, 'select', columnselectHandler)
var status = 0;
function columnselectHandler(e) {
var selection = chart.getSelection();
var selectedItem = selection[0];
var data2 = getDDData(k);
var columndata = []
if (selectedItem) {
if (status == 0){
var name = data.getValue(selectedItem.row, 0);
columndata[0] = data2[0]
columndata[1] = data2[selectedItem.row+1]
var chartData = new google.visualization.arrayToDataTable(columndata);
chart.draw(chartData, {width: 1200, height:500}, options);
var button = document.getElementsByClassName("backToMain")[0];
button.setAttribute("id",chartType)
button.setAttribute("style","display:inline; margin-top:150px; font-size:30px; position:absolute;")`