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Filtering by time in Google charts [duplicate]

I want to add zoom buttons on top of AreaChart like AnnotationChart. I searched for the same but didn't get the solution. Can anyone tell me the solution?
I require buttons like this:
Thanks

you'll have to add the buttons manually,
when clicked, set the visible range on the range filter using the state property
rangeFilter.setState({
range: {
start: currentRange.range.start,
end: new Date(currentRange.range.start.getTime() + visibleRange)
}
});
see following working snippet,
each button represents the visible range in milliseconds,
when clicked, set the range on the filter...
google.charts.load('current', {
packages: ['controls', 'corechart']
}).then(function () {
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'Positive');
data.addColumn('number', 'Negative');
data.addRows([
[new Date(2017, 11, 20), 10, null],
[new Date(2017, 11, 21), 5, null],
[new Date(2017, 11, 22), 0, 0],
[new Date(2017, 11, 23), null, -5],
[new Date(2017, 11, 24), null, -10],
[new Date(2017, 11, 25), null, -5],
[new Date(2017, 11, 26), 0, 0],
[new Date(2017, 11, 27), 10, null],
[new Date(2017, 11, 28), 5, null],
[new Date(2017, 11, 29), 0, 0],
[new Date(2018, 0, 20), 00, null],
[new Date(2018, 0, 21), 5, null],
[new Date(2018, 0, 22), 0, 0],
[new Date(2018, 0, 23), null, -5],
[new Date(2018, 0, 24), null, -10],
[new Date(2018, 0, 25), null, -5],
[new Date(2018, 0, 26), 0, 0],
[new Date(2018, 0, 27), 00, null],
[new Date(2018, 0, 28), 5, null],
[new Date(2018, 0, 29), 0, 0],
[new Date(2018, 1, 20), 10, null],
[new Date(2018, 1, 21), 5, null],
[new Date(2018, 1, 22), 0, 0],
[new Date(2018, 1, 23), null, -5],
[new Date(2018, 1, 24), null, -10],
[new Date(2018, 1, 25), null, -5],
[new Date(2018, 1, 26), 0, 0],
[new Date(2018, 1, 27), 10, null],
[new Date(2018, 1, 28), 5, null],
[new Date(2018, 1, 29), 0, 0],
[new Date(2018, 2, 20), 10, null],
[new Date(2018, 2, 21), 5, null],
[new Date(2018, 2, 22), 0, 0],
[new Date(2018, 2, 23), null, -5],
[new Date(2018, 2, 24), null, -10],
[new Date(2018, 2, 25), null, -5],
[new Date(2018, 2, 26), 0, 0],
[new Date(2018, 2, 27), 10, null],
[new Date(2018, 2, 28), 5, null],
[new Date(2018, 2, 29), 0, 0],
[new Date(2018, 3, 20), 10, null],
[new Date(2018, 3, 21), 5, null],
[new Date(2018, 3, 22), 0, 0],
[new Date(2018, 3, 23), null, -5],
[new Date(2018, 3, 24), null, -10],
[new Date(2018, 3, 25), null, -5],
[new Date(2018, 3, 26), 0, 0],
[new Date(2018, 3, 27), 10, null],
[new Date(2018, 3, 28), 5, null],
[new Date(2018, 3, 29), 0, 0],
[new Date(2018, 4, 20), 10, null],
[new Date(2018, 4, 21), 5, null],
[new Date(2018, 4, 22), 0, 0],
[new Date(2018, 4, 23), null, -5],
[new Date(2018, 4, 24), null, -10],
[new Date(2018, 4, 25), null, -5],
[new Date(2018, 4, 26), 0, 0],
[new Date(2018, 4, 27), 10, null],
[new Date(2018, 4, 28), 5, null],
[new Date(2018, 4, 29), 0, 0],
[new Date(2018, 5, 20), 10, null],
[new Date(2018, 5, 21), 5, null],
[new Date(2018, 5, 22), 0, 0],
[new Date(2018, 5, 23), null, -5],
[new Date(2018, 5, 24), null, -10],
[new Date(2018, 5, 25), null, -5],
[new Date(2018, 5, 26), 0, 0],
[new Date(2018, 5, 27), 10, null],
[new Date(2018, 5, 28), 5, null],
[new Date(2018, 5, 29), 0, 0],
[new Date(2018, 6, 20), 10, null],
[new Date(2018, 6, 21), 5, null],
[new Date(2018, 6, 22), 0, 0],
[new Date(2018, 6, 23), null, -5],
[new Date(2018, 6, 24), null, -10],
[new Date(2018, 6, 25), null, -5],
[new Date(2018, 6, 26), 0, 0],
[new Date(2018, 6, 27), 10, null],
[new Date(2018, 6, 28), 5, null],
[new Date(2018, 6, 29), 0, 0],
[new Date(2018, 9, 20), 10, null],
[new Date(2018, 9, 21), 5, null],
[new Date(2018, 9, 22), 0, 0],
[new Date(2018, 9, 23), null, -5],
[new Date(2018, 9, 24), null, -10],
[new Date(2018, 9, 25), null, -5],
[new Date(2018, 9, 26), 0, 0],
[new Date(2018, 9, 27), 10, null],
[new Date(2018, 9, 28), 5, null],
[new Date(2018, 9, 29), 0, 0],
[new Date(2018, 11, 20), 10, null],
[new Date(2018, 11, 21), 5, null],
[new Date(2018, 11, 22), 0, 0],
[new Date(2018, 11, 23), null, -5],
[new Date(2018, 11, 24), null, -10],
[new Date(2018, 11, 25), null, -5],
[new Date(2018, 11, 26), 0, 0],
[new Date(2018, 11, 27), 10, null],
[new Date(2018, 11, 28), 5, null],
[new Date(2018, 11, 29), 0, 0],
]);
var rangeFilter = new google.visualization.ControlWrapper({
controlType: 'ChartRangeFilter',
containerId: 'filter-range',
options: {
filterColumnIndex: 0,
ui: {
chartType: 'AreaChart',
chartOptions: {
chartArea: {
width: '100%',
left: 36,
right: 18
},
height: 72
}
}
}
});
var chart = new google.visualization.ChartWrapper({
chartType: 'AreaChart',
containerId: 'chart-area',
options: {
height: 280,
legend: {
alignment: 'end',
position: 'top'
},
animation: {
duration: 500,
easing: 'in',
startup: true
},
chartArea: {
height: '100%',
width: '100%',
top: 36,
left: 36,
right: 18,
bottom: 36
}
}
});
$('#range-buttons button').on('click', function (sender) {
var currentRange = rangeFilter.getState();
var visibleRange = parseInt($(sender.target).data('range'));
if (isNaN(visibleRange)) {
rangeFilter.setState(null);
} else {
rangeFilter.setState({
range: {
start: currentRange.range.start,
end: new Date(currentRange.range.start.getTime() + visibleRange)
}
});
}
rangeFilter.draw();
});
var dashboard = new google.visualization.Dashboard(document.getElementById('dashboard'));
dashboard.bind(rangeFilter, chart);
dashboard.draw(data);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.0/themes/base/jquery-ui.css">
<div id="dashboard">
<div id="range-buttons">
<span>Zoom: </span>
<button class="ui-button ui-widget ui-corner-all" data-range="3600000">1h</button>
<button class="ui-button ui-widget ui-corner-all" data-range="86400000">1d</button>
<button class="ui-button ui-widget ui-corner-all" data-range="432000000">5d</button>
<button class="ui-button ui-widget ui-corner-all" data-range="604800000">1w</button>
<button class="ui-button ui-widget ui-corner-all" data-range="2592000000">1m</button>
<button class="ui-button ui-widget ui-corner-all" data-range="7776000000">3m</button>
<button class="ui-button ui-widget ui-corner-all" data-range="15552000000">6m</button>
<button class="ui-button ui-widget ui-corner-all" data-range="31104000000">1y</button>
<button class="ui-button ui-widget ui-corner-all">max</button>
</div>
<div id="chart-area"></div>
<div id="filter-range"></div>
</div>

It turns out you can use the AnnotationChart directly to display an AreaChart instead of a LineChart. It is actually already using an ComboChart internally, which has a default seriesType of 'line', but you can turn it into an area chart just by setting the 'areaOpacity' to a non-zero value by adding this to your chart options:
var options = {
...
chart: {
areaOpacity: 0.3
}
}

google charts gantt can't get critical path or axis to show up

I am trying to follow along with examples here:
https://developers.google.com/chart/interactive/docs/gallery/ganttchart
My code looks like this:
google.charts.load('current', {'packages':['gantt']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['5efbce41802562e233e21b9e',
'Demolition' ,
new Date(2020, 5, 8),
new Date(2020, 6, 24),
null,
100,
''],
['5efbd34a802562e233e21bda',
'Sealing, Flooring' ,
new Date(2020, 6, 27),
new Date(2020, 7, 5),
null,
100,
'5efbce41802562e233e21b9e'],
['5efbd390802562e233e21be6',
'Concrete Work' ,
new Date(2020, 7, 10),
new Date(2020, 7, 14),
null,
100,
'5efbd34a802562e233e21bda'],
['5efbd55e802562e233e21c3c',
'HVAC' ,
new Date(2020, 7, 18),
new Date(2020, 7, 28),
null,
100,
'5efbce41802562e233e21b9e'],
['5efbd55e802562e233e21c43',
'Fire Protection' ,
new Date(2020, 8, 1),
new Date(2020, 8, 11),
null,
100,
'5efbd55e802562e233e21c3c'],
['5efbd55e802562e233e21c4a',
'Framing and Drywalling' ,
new Date(2020, 8, 13),
new Date(2020, 8, 25),
null,
100,
'5efbd55e802562e233e21c3c,5efbd55e802562e233e21c43,5efbd55e802562e233e21c51'],
['5efbd55e802562e233e21c51',
'Electrical Upgrade' ,
new Date(2020, 8, 2),
new Date(2020, 8, 11),
null,
100,
''],
['5efbd55e802562e233e21c58',
'Flooring' ,
new Date(2020, 9, 5),
new Date(2020, 9, 16),
null,
100,
'5efbd390802562e233e21be6'],
['5efbd55e802562e233e21c5f',
'Inspection and Remediation' ,
new Date(2020, 9, 19),
new Date(2020, 9, 30),
null,
100,
'5efbd55e802562e233e21c4a'],
]);
var trackHeight = 40;
var options = {
height: data.getNumberOfRows() * trackHeight + 200,
width: 1024,
gantt: {
criticalPathEnabled: true,
criticalPathStyle: {
stroke: '#e64a19',
strokeWidth: 5
}
};
var chart = new google.visualization.Gantt(document.getElementById('gantt_5efbc530802562d3f4760a1f'));
chart.draw(data, options);
}
But my graph looks like this:
I don't see the axis (legend) as in the example, and i don't see the critical path. Any ideas?
Thanks,
kevin

How can I extract row entry width of Google Chart

I'm having difficulty extracting the width of a selected row on a Google Gantt chart. To further elaborate I need the width of the singular data row, which I can see in the code behind under the 'rect' tag however not sure how to properly call the syntax for width retrieval.
ganttchart

first, wait for the chart's 'ready' event to fire.
then we can get the <rect> elements from the chart.
there will be other <rect> elements, besides those that represent a row.
such as the chart area, etc.
we can filter those out by fill color...
google.visualization.events.addOneTimeListener(chart, 'ready', function () {
var rows = container.getElementsByTagName('rect');
var bars = [];
Array.prototype.forEach.call(rows, function(row) {
switch (row.getAttribute('fill')) {
case '#ffffff':
case '#f5f5f5':
case 'none':
// ignore
break;
default:
bars.push(row);
}
});
if (bars.length > 0) {
console.log(parseFloat(bars[0].getAttribute('width')));
}
});
see following working snippet...
google.charts.load('current', {
packages:['gantt']
}).then(function () {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['2014Spring', 'Spring 2014', 'spring',
new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
['2014Summer', 'Summer 2014', 'summer',
new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
['2014Autumn', 'Autumn 2014', 'autumn',
new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
['2014Winter', 'Winter 2014', 'winter',
new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
['2015Spring', 'Spring 2015', 'spring',
new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
['2015Summer', 'Summer 2015', 'summer',
new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
['2015Autumn', 'Autumn 2015', 'autumn',
new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
['2015Winter', 'Winter 2015', 'winter',
new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
['Football', 'Football Season', 'sports',
new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
['Baseball', 'Baseball Season', 'sports',
new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
['Basketball', 'Basketball Season', 'sports',
new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
['Hockey', 'Hockey Season', 'sports',
new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
]);
var options = {
height: 400,
gantt: {
trackHeight: 30
}
};
var container = document.getElementById('chart_div');
var chart = new google.visualization.Gantt(container);
google.visualization.events.addOneTimeListener(chart, 'ready', function () {
var rows = container.getElementsByTagName('rect');
var bars = [];
Array.prototype.forEach.call(rows, function(row) {
switch (row.getAttribute('fill')) {
case '#ffffff':
case '#f5f5f5':
case 'none':
// ignore
break;
default:
bars.push(row);
}
});
if (bars.length > 0) {
console.log(parseFloat(bars[0].getAttribute('width')));
}
});
chart.draw(data, options);
function daysToMilliseconds(days) {
return days * 24 * 60 * 60 * 1000;
}
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Change color text gantt chart google ( javascript ) without CSS

How can i change the left text color without use or insert a css ?
This code is the same as documentation.
I know colors depend on resources. I would not change the colors of the activity bars but only the text associated with it.
google.charts.load('current', {'packages':['gantt']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['2014Spring', 'Spring 2014', 'spring',
new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
['2014Summer', 'Summer 2014', 'summer',
new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
['2014Autumn', 'Autumn 2014', 'autumn',
new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
['2014Winter', 'Winter 2014', 'winter',
new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
['2015Spring', 'Spring 2015', 'spring',
new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
['2015Summer', 'Summer 2015', 'summer',
new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
['2015Autumn', 'Autumn 2015', 'autumn',
new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
['2015Winter', 'Winter 2015', 'winter',
new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
['Football', 'Football Season', 'sports',
new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
['Baseball', 'Baseball Season', 'sports',
new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
['Basketball', 'Basketball Season', 'sports',
new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
['Hockey', 'Hockey Season', 'sports',
new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
]);
var options = {
height: 400,
gantt: {
trackHeight: 30
}
};
var chart = new google.visualization.Gantt(document.getElementById('chart_div'));
chart.draw(data, options);
}
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

according to the configuration options, use option --> gantt.labelStyle
gantt: {
labelStyle: {
color: '#ff0000',
fontName: 'Arial',
fontSize: 20
}
}
although fontName & fontSize appear to work properly,
color does not...
notice the color doesn't change in the following working snippet...
google.charts.load('current', {
callback: drawChart,
packages: ['gantt']
});
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['2014Spring', 'Spring 2014', 'spring',
new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
['2014Summer', 'Summer 2014', 'summer',
new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
['2014Autumn', 'Autumn 2014', 'autumn',
new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
['2014Winter', 'Winter 2014', 'winter',
new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
['2015Spring', 'Spring 2015', 'spring',
new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
['2015Summer', 'Summer 2015', 'summer',
new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
['2015Autumn', 'Autumn 2015', 'autumn',
new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
['2015Winter', 'Winter 2015', 'winter',
new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
['Football', 'Football Season', 'sports',
new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
['Baseball', 'Baseball Season', 'sports',
new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
['Basketball', 'Basketball Season', 'sports',
new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
['Hockey', 'Hockey Season', 'sports',
new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
]);
var options = {
height: 400,
gantt: {
trackHeight: 30,
labelStyle: {
color: '#ff0000',
fontName: 'Arial',
fontSize: 20
}
}
};
var container = document.getElementById('chart_div');
var chart = new google.visualization.Gantt(container);
chart.draw(data, options);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>
one option would be to change the color manually using script
first, need to identify the row labels from the bottom date labels
to do so, test the label value exists in the data table column for 'Task Name'
use data table method --> getFilteredRows
the only problem with changing the color manually,
the chart will change the color back to its original,
anytime there is activity, such as hovering a row and / or row label
as such, need to use a MutationObserver, or something,
to keep the new color
see following working snippet...
google.charts.load('current', {
callback: drawChart,
packages: ['gantt']
});
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['2014Spring', 'Spring 2014', 'spring',
new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
['2014Summer', 'Summer 2014', 'summer',
new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
['2014Autumn', 'Autumn 2014', 'autumn',
new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
['2014Winter', 'Winter 2014', 'winter',
new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
['2015Spring', 'Spring 2015', 'spring',
new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
['2015Summer', 'Summer 2015', 'summer',
new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
['2015Autumn', 'Autumn 2015', 'autumn',
new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
['2015Winter', 'Winter 2015', 'winter',
new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
['Football', 'Football Season', 'sports',
new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
['Baseball', 'Baseball Season', 'sports',
new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
['Basketball', 'Basketball Season', 'sports',
new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
['Hockey', 'Hockey Season', 'sports',
new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
]);
var options = {
height: 400,
gantt: {
trackHeight: 30,
labelStyle: {
fontName: 'Arial',
fontSize: 20
}
}
};
var container = document.getElementById('chart_div');
var chart = new google.visualization.Gantt(container);
var observer = new MutationObserver(function () {
$.each($('text'), function (index, label) {
var rowIndex = data.getFilteredRows([{
column: 1,
value: $(label).text()
}]);
if (rowIndex.length > 0) {
$(label).attr('fill', '#ff0000')
}
});
});
observer.observe(container, {
childList: true,
subtree: true
});
chart.draw(data, options);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Google Gantt Chart

I am using the Gantt Chart provided by Google.
I have added a listener to when I click on any of the elements or entity in attempt to return the row/columns data, but it is returning empty,
function selectHandler() {
var selectedItem = chart.getSelection();
if (selectedItem) {
console.log(selectedItem);
}
}
google.visualization.events.addListener(chart, 'select', selectHandler);
Here is my attempt on jsfiddle: https://jsfiddle.net/30cuaarb/

Selection does not seem to work with google.visualization.GanttChart component, but you could introduce a custom selection as demonstrated below:
google.load("visualization", "1.1", { packages: ["gantt"] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['2014Spring', 'Spring 2014', 'spring',
new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
['2014Summer', 'Summer 2014', 'summer',
new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
['2014Autumn', 'Autumn 2014', 'autumn',
new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
['2014Winter', 'Winter 2014', 'winter',
new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
['2015Spring', 'Spring 2015', 'spring',
new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
['2015Summer', 'Summer 2015', 'summer',
new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
['2015Autumn', 'Autumn 2015', 'autumn',
new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
['2015Winter', 'Winter 2015', 'winter',
new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
['Football', 'Football Season', 'sports',
new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
['Baseball', 'Baseball Season', 'sports',
new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
['Basketball', 'Basketball Season', 'sports',
new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
['Hockey', 'Hockey Season', 'sports',
new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
]);
var options = {
height: 400,
gantt: {
trackHeight: 30
}
};
var chart = new google.visualization.GanttChart(document.getElementById('chart_div'));
chart.draw(data, options);
google.visualization.events.addListener(chart, 'select', selectHandler);
google.visualization.events.addListener(chart, 'onmouseover', saveSelection);
var selectedItem; //custom selector
function saveSelection(e) {
selectedItem = { row:e.row,column:null}; //save selected item
}
function selectHandler() {
//console.log(selectedItem);
document.getElementById('result').innerHTML = selectedItem.row + " row has been selected";
}
}
<script type="text/javascript" src="https://www.google.com/jsapi?autoload={'modules':[{'name':'visualization','version':'1.1','packages':['gantt']}]}"></script>
<div id="chart_div"></div>
Result: <span id='result' />