You could dynamically generate the message when you build/output the data
to the page... in php it woul dbe something like:
if(sizeof($data)==0)
{
build chart with title "No data available yet...."
}
else
{
}
On Wed, Oct 31, 2018 at 8:07 PM 'Roslyn O'Shea' via Google Visualization
API <google-visualization-api@googlegroups.com> wrote:
> 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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--
Sid Young
Sales & Marketing
*Rockabilly Dames*
E: sa...@rockabillydames.com
W: https://rockabillydames.com <https://rockabillydames.com/>
PO Box 611
Ashgrove 4060
Brisbane Queesnland
Australia
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