Highcharts dynamic data from an Api - highcharts

Question

I want to create a chart that reads its data from an Api. To do that i have this fiddle http://jsfiddle.net/68oe1oLf/69/
Note: https://jsfiddle.net/68oe1oLf/69/ will lead to mixed content error and will fail to load data from the api
This is the javascript code
$(document).ready(function () {
$.get( "http://firmbridgecapital.com/live.php", function( dt ) {
localStorage.setItem("data", dt);
});
window.setInterval(function(){
$.get( "http://firmbridgecapital.com/live.php", function( dt ) {
localStorage.setItem("data", dt);
});
}, 5000);
Highcharts.setOptions({
global: {
useUTC: false
}
});
Highcharts.chart('container', {
chart: {
type: 'spline',
animation: Highcharts.svg, // don't animate in old IE
marginRight: 10,
events: {
load: function () {
// set up the updating of the chart each second
var series = this.series[0];
setInterval(function () {
var x = (new Date()).getTime(), // current time
y = parseInt(localStorage.getItem("data"));
series.addPoint([x, y], true, true);
}, 5000);
}
}
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
},
yAxis: {
max: 3,
title: {
text: 'Value'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
formatter: function () {
return '<b>' + this.series.name + '</b><br/>' +
Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '<br/>' +
Highcharts.numberFormat(this.y, 2);
}
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
name: 'Random data',
data: (function () {
// generate an array of random data
var data = [],
time = (new Date()).getTime(),
i;
for (i = -150; i <= 0; i += 25) {
data.push({
x: time,
y: parseInt(localStorage.getItem("data"))
});
}
return data;
}())
}]
});
});
I borrowed the idea from this docs example http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/demo/dynamic-update/
My chart is always grounded on value 1 and does not show the changing values in the y axis. How may i fix this?.

Answer 1

The value you are referencing, i.e. live php page, seems to be 1.x and increasing very slowly. (1.7 while I was looking).
In your parsing you do the following:
y = parseInt(localStorage.getItem("data"));
And since the value is 1.7, and you try to parse it as an integer with parseInt, it gets converted to 1. Using parseFloat will give you a slowly increasing graph.