My Google Gauge is showing blank on thing speak

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this is the JavaScript code i have written on under Thingspeak plugin > Google Guage
<script type='text/javascript' src=''></script>
<script type='text/javascript' src=''></script>
<script type='text/javascript'>
// set your channel id here
var channel_id = 1264170;
// set your channel's read api key here
var api_key = '8YD9SX9ZU17OEQ5N';
// list of name off the gauge and value
var value_names = ['','ON','BLOCK','TAPE'];
var gauge_names = ['OFF','Normal','Abnormal', 'Alert!'];
// global variables
var chart, charts, data;
// load the google gauge visualization
google.load('visualization', '1', {packages:['gauge']});
// display the data
function displayData(point) {
data.setValue(0, 0, gauge_names[point]);
data.setValue(0, 1, point);
data.setFormattedValue(0, 1, value_names[point]); //Formatting font and font size is not possible in gauge chart
chart.draw(data, options);
// load the data
function loadData() {
// variable for the data point
var p;
// get the data from thingspeak
$.getJSON('' + channel_id + '/feed/last.json?api_key=' + api_key, function(data) {
// get the data point
p = data.field3;
// if there is a data point display it
if (p) {
// initialize the chart
function initChart() {
data = new google.visualization.DataTable();
data.addColumn('string', 'Label');
data.addColumn('number', 'Value');
chart = new google.visualization.Gauge(document.getElementById('gauge_div'));
options = {width: 240, height: 240, max: 3, redFrom: 1.5, redTo: 3, greenFrom:0.5, greenTo: 1.5, minorTicks: 0, majorTicks: ["Off","","","Bad"]};
// load new data every 1 second
setInterval('loadData()', 1000);

Answers (1)

Vinod on 1 Jan 2021
Why not use the gauge widget? Any particular reason you want the Google gauge, specifically?
Aniket Manjare
Aniket Manjare on 12 Jan 2021
Hello, i am using the guage provided by the Thingspeak only. i have made some changes in the code , the problem is when i am use thr default code i can see the guage and when i am using the the above code its not appearing , can you please tell why i am getting this error.

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