New to google charts and my chart works as expected using JSONdata and a
datatable. Is it possible if no data exists in the record set to display a
message in the bar chart.
Using google example is it possible to add a 'No Data' message when there
is no data at 12pm?
google.charts.load('current', {packages: ['corechart', 'bar']});
google.charts.setOnLoadCallback(drawMultSeries);
function drawMultSeries() {
var data = new google.visualization.DataTable();
data.addColumn('timeofday', 'Time of Day');
data.addColumn('number', 'Motivation Level');
data.addColumn('number', 'Energy Level');
data.addRows([
[{v: [8, 0, 0], f: '8 am'}, 1, .25],
[{v: [9, 0, 0], f: '9 am'}, 2, .5],
[{v: [10, 0, 0], f:'10 am'}, 3, 1],
[{v: [11, 0, 0], f: '11 am'}, 4, 2.25],
[{v: [12, 0, 0], f: '12 pm'}, 0, 0],
[{v: [13, 0, 0], f: '1 pm'}, 6, 3],
[{v: [14, 0, 0], f: '2 pm'}, 7, 4],
[{v: [15, 0, 0], f: '3 pm'}, 8, 5.25],
[{v: [16, 0, 0], f: '4 pm'}, 9, 7.5],
[{v: [17, 0, 0], f: '5 pm'}, 10, 10],
]);
var options = {
title: 'Motivation and Energy Level Throughout the Day',
hAxis: {
title: 'Time of Day',
format: 'h:mm a',
viewWindow: {
min: [7, 30, 0],
max: [17, 30, 0]
}
},
vAxis: {
title: 'Rating (scale of 1-10)'
}
};
var chart = new google.visualization.ColumnChart(
document.getElementById('chart_div'));
chart.draw(data, options);
}
<script type="text/javascript"
src="https://www.gstatic.com/charts/loader.js";></script>
<div id="chart_div"></div>
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