Zoom Google Line chart
Question
I am trying to create a line chart with the Google Visualization API. I want to enable zooming. Documents say that the 'explorer' option is useful. But when I try to use the 'explorer' option, the chart is shown but zoom does not work.
This is my code:
function drawVisualization(dataValues) {
var data = new window.google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'Count');
for (var i = 0; i < dataValues.length; i++) {
data.addRow([new Date(dataValues[i].Year, dataValues[i].Month-1, dataValues[i].Day), dataValues[i].Count]);
}
var formatter_short = new google.visualization.DateFormat({ formatType: 'short' });
formatter_short.format(data, 0);
var options = {
title: "Time statistics",
explorer: { maxZoomOut: 8 }
};
var chart = new google.visualization.LineChart(document.getElementById('date'));
chart.draw(data, options);
}
How can I resolve this problem and make a line chart zoomable?
4 answers
solution1
37 2016-04-13 10:51:37
Here is How I got the zoom with the dragToZoom explorer function
explorer: {
actions: ['dragToZoom', 'rightClickToReset'],
axis: 'horizontal',
keepInBounds: true,
maxZoomIn: 4.0
}
the fiddle is here https://jsfiddle.net/4w626v2s/2/
also by just allowing it to zoom by scrolling
explorer: {
axis: 'horizontal',
keepInBounds: true,
maxZoomIn: 4.0
}
the fiddle for scroll to zoom is here https://jsfiddle.net/5h7jxqq8/2/
solution2
15 2014-02-24 12:24:06
This seems to be working now with LineChart AND ColumnChart (even though this one is not documented).
var options = {
explorer: {
maxZoomOut:2,
keepInBounds: true
}
};
solution3
2 2017-03-17 07:09:22
Try this:
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', { callback: function () { drawChart(); window.addEventListener('resize', drawChart, false); }, packages:['corechart'] }); function drawChart() { var data = google.visualization.arrayToDataTable([ ['Year', 'Sales', 'Expenses', 'Profit'], ['2014', 1000, 400, 200], ['2015', 1170, 460, 250], ['2016', 660, 1120, 300], ['2017', 1030, 540, 350] ]); var options = { animation:{ duration: 1000, easing: 'linear', startup: true }, height: 600, width: window.innerWidth, theme: 'material', title: 'Company Performance' }; var chart = new google.visualization.ColumnChart(document.getElementById('columnchart_material')); chart.draw(data, options); } </script> </head> <body> <div id="columnchart_material" style="height: 500px; "></div> </body> </html>
If you want to set Width and Height according to the Screen. So, you can achieve this by using "innerWidth" and "innerHeight" as shown below:
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', { callback: function () { drawChart(); window.addEventListener('resize', drawChart, false); }, packages:['corechart'] }); function drawChart() { var data = google.visualization.arrayToDataTable([ ['Year', 'Sales', 'Expenses', 'Profit'], ['2014', 1000, 400, 200], ['2015', 1170, 460, 250], ['2016', 660, 1120, 300], ['2017', 1030, 540, 350] ]); var options = { animation:{ duration: 1000, easing: 'linear', startup: true }, height: window.innerHeight, width: window.innerWidth, theme: 'material', title: 'Company Performance' }; var chart = new google.visualization.ColumnChart(document.getElementById('columnchart_material')); chart.draw(data, options); } </script> </head> <body> <div id="columnchart_material"></div> </body> </html>
I hope it helps you to solve the problem.
solution4
1 2019-12-05 13:11:43
The Below code will work but you should not use animation on your charts. Remove animation and use only explorer. This is a bug, if animation is applied then zoom will not work.
I spent weeks to figure this out.
explorer: {
keepInBounds: true,
maxZoomIn: 8.0
}
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