Hello,
I'd like to make a ComboChart with intervals. It seems that to define data
types such as required for interval role, one must use the long-handed
notation for DataTable rather than the convenient short-handed notation of
arrayToDataTable.
However, I haven't found any examples anywhere for this, nor have I found
any ComboChart with multiple columns examples using DataTable. I suppose
I don't know how to add multiple data sets to a combochart using DataTable.
Thank you in advance for your assistance.
Here's what I have:
*1) ComboChart with multiple data sets but no interval*
function drawVisualization() {
// Create and populate the data table.
var data = google.visualization.arrayToDataTable([
['Subtest', 'Alpha', 'Beta', 'Gamma'],
['Foo', 100, 938, 522],
['Bar', 135, 1120, 599],
['Qux', 157, 1167, 587]
]);
var options = {
title : 'Scores',
width: 600,
height: 400,
vAxis: {title: "SCORE"},
hAxis: {title: "Benchmark"},
seriesType: "bars"
};
// Create and draw the visualization.
var ac = new google.visualization.ComboChart(document.getElementById(
'visualization'));
ac.draw(data, options);
}
*2) ComboChart with a single data set and with intervals*
function drawVisualization() {
// Create and populate the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Subtest');
data.addColumn('number', 'Alpha');
data.addColumn({type: 'number', role: 'interval'}, 'min');
data.addColumn({type: 'number', role: 'interval'}, 'max');
data.addRows([
['Foo',500, 400, 600],
['Bar',750, 500, 1000]
]);
var options = {
title : 'Scores',
width: 600,
height: 400,
vAxis: {title: "SCORE"},
hAxis: {title: "Benchmark"},
seriesType: "bars"
};
// Create and draw the visualization, using style options.
var ac = new google.visualization.ComboChart(document.
getElementById('combochart'));
ac.draw(data, options);
}
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