This does not work.
.....
dashboard.draw(data); // works up to here
//but when I try to get the PNG, Nothing happens. Is the code below correct?
var chart2 = chartwrapper.getChart();
chart2.setContainerId(document.getElementById('chart2'));
chart2(draw,xoption);
document.getElementById('png').outerHTML = '<a href=\"' +
chart2.getImageURI() + '\">Printable version</a>';
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