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aq.html
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<!DOCTYPE html>
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="content-type">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!--<script src="https://www.thingspeak.com/assets/application-927d1479ab2235e91ae25cb56d33b211.js"
type="text/javascript"></script>-->
<script src="https://code.highcharts.com/stock/highstock.js"></script>
<script src="https://code.highcharts.com/stock/modules/exporting.js"></script>
<script src="https://rawgithub.com/highslide-software/export-csv/master/export-csv.js"></script>
<script type="text/javascript">
// Webpage Javascript to chart multiple ThingSpeak channels on two axis with navigator, load historical data, and export cvs data.
// Public Domain, by turgo.
// The charting library is called HighStock. It is awesome! HighSoft, the owners say,
// "Do you want to use Highstock for a personal or non-profit project? Then you can use Highchcarts for
// free under the Creative Commons Attribution-NonCommercial 3.0 License. "
var dynamicChart;
var channelsLoaded = 0;
// put your ThingSpeak Channel#, Channel Name, and API keys here.
// fieldList shows which field you want to load, and which axis to display that field on,
// the 'T' Temperature left axis, or the 'O' Other right axis.
var channelKeys =[];
channelKeys.push({channelNumber:1045753, name:'Air Quality',key:'EIAC68FJX35MLGYI',
fieldList:[{field:1,axis:'T'}, {field:2,axis:'H'}, {field:3,axis:'P'}, {field:4,axis:'P'}, {field:5,axis:'P'}]});
//channelKeys.push({channelNumber:9354, name:'CRYSTAL CITY WEATHER Fault',key:'XXXXXXXXXXXXXXXX',
// fieldList:[{field:1,axis:'T'},{field:2,axis:'O'},{field:3,axis:'O'},{field:4,axis:'O'},{field:5,axis:'O'},{field:6,axis:'O'}]});
// user's timezone offset
var myOffset = new Date().getTimezoneOffset();
// converts date format from JSON
function getChartDate(d) {
// get the data using javascript's date object (year, month, day, hour, minute, second)
// months in javascript start at 0, so remember to subtract 1 when specifying the month
// offset in minutes is converted to milliseconds and subtracted so that chart's x-axis is correct
return Date.UTC(d.substring(0,4), d.substring(5,7)-1, d.substring(8,10), d.substring(11,13), d.substring(14,16), d.substring(17,19)) - (myOffset * 60000);
}
// Hide all series, via 'Hide All' button. Then user can click on serries name in legent to show series of interest.
function HideAll(){
for (var index=0; index<dynamicChart.series.length; index++) // iterate through each series
{
if (dynamicChart.series[index].name == 'Navigator')
continue;
dynamicChart.series[index].hide();
//window.console && console.log('Series Number:',index,' Name:',dynamicChart.series[index].name);
}
//});
}
// This is where the chart is generated.
$(document).ready(function()
{
//Add Channel Load Menu
var menu=document.getElementById("Channel Select");
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
window.console && console.log('Name',channelKeys[channelIndex].name);
var menuOption =new Option(channelKeys[channelIndex].name,channelIndex);
menu.options.add(menuOption,channelIndex);
}
var last_date; // variable for the last date added to the chart
window.console && console.log('Testing console');
//make series numbers for each field
var seriesCounter=0
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
for (var fieldIndex=0; fieldIndex<channelKeys[channelIndex].fieldList.length; fieldIndex++) // iterate through each channel
{
channelKeys[channelIndex].fieldList[fieldIndex].series = seriesCounter;
seriesCounter++;
}
}
//make calls to load data from each channel into channelKeys array now
// draw the chart when all the data arrives, later asyncronously add history
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
channelKeys[channelIndex].loaded = false;
loadThingSpeakChannel(channelIndex,channelKeys[channelIndex].channelNumber,channelKeys[channelIndex].key,channelKeys[channelIndex].fieldList);
}
//window.console && console.log('Channel Keys',channelKeys);
// load the most recent 2500 points (fast initial load) from a ThingSpeak channel into a data[] array and return the data[] array
function loadThingSpeakChannel(sentChannelIndex,channelNumber,key,sentFieldList) {
var fieldList= sentFieldList;
var channelIndex = sentChannelIndex;
// get the Channel data with a webservice call
$.getJSON('https://www.thingspeak.com/channels/'+channelNumber+'/feed.json?callback=?&offset=0&results=2500;key='+key, function(data)
{
// if no access
if (data == '-1') {
$('#chart-container').append('This channel is not public. To embed charts, the channel must be public or a read key must be specified.');
window.console && console.log('Thingspeak Data Loading Error');
}
for (var fieldIndex=0; fieldIndex<fieldList.length; fieldIndex++) // iterate through each field
{
fieldList[fieldIndex].data =[];
for (var h=0; h<data.feeds.length; h++) // iterate through each feed (data point)
{
var p = []//new Highcharts.Point();
var fieldStr = "data.feeds["+h+"].field"+fieldList[fieldIndex].field;
var v = eval(fieldStr);
p[0] = getChartDate(data.feeds[h].created_at);
p[1] = parseFloat(v);
// if a numerical value exists add it
if (!isNaN(parseInt(v))) { fieldList[fieldIndex].data.push(p); }
}
fieldList[fieldIndex].name = eval("data.channel.field"+fieldList[fieldIndex].field);
}
window.console && console.log('getJSON field name:',fieldList[0].name);
channelKeys[channelIndex].fieldList=fieldList;
channelKeys[channelIndex].loaded=true;
channelsLoaded++;
window.console && console.log('channels Loaded:',channelsLoaded);
window.console && console.log('channel index:',channelIndex);
if (channelsLoaded==channelKeys.length){createChart();}
})
.fail(function() { alert('getJSON request failed! '); });
}
// create the chart when all data is loaded
function createChart() {
// specify the chart options
var chartOptions = {
chart:
{
renderTo: 'chart-container',
zoomType:'y',
events:
{
load: function()
{
if ('true' === 'true' && (''.length < 1 && ''.length < 1 && ''.length < 1 && ''.length < 1 && ''.length < 1))
{
// If the update checkbox is checked, get latest data every 15 seconds and add it to the chart
setInterval(function()
{
if (document.getElementById("Update").checked)
{
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
(function(channelIndex)
{
// get the data with a webservice call
$.getJSON('https://www.thingspeak.com/channels/'+channelKeys[channelIndex].channelNumber+'/feed/last.json?callback=?&offset=0&location=false;key='+channelKeys[channelIndex].key, function(data)
{
for (var fieldIndex=0; fieldIndex<channelKeys[channelIndex].fieldList.length; fieldIndex++)
{
// if data exists
var fieldStr = "data.field"+channelKeys[channelIndex].fieldList[fieldIndex].field;
var chartSeriesIndex=channelKeys[channelIndex].fieldList[fieldIndex].series;
if (data && eval(fieldStr))
{
var p = []//new Highcharts.Point();
var v = eval(fieldStr);
p[0] = getChartDate(data.created_at);
p[1] = parseFloat(v);
// get the last date if possible
if (dynamicChart.series[chartSeriesIndex].data.length > 0)
{
last_date = dynamicChart.series[chartSeriesIndex].data[dynamicChart.series[chartSeriesIndex].data.length-1].x;
}
var shift = false ; //default for shift
// if a numerical value exists and it is a new date, add it
if (!isNaN(parseInt(v)) && (p[0] != last_date))
{
dynamicChart.series[chartSeriesIndex].addPoint(p, true, shift);
}
}
//window.console && console.log('channelKeys:',channelKeys);
//window.console && console.log('chartSeriesIndex:',chartSeriesIndex);
//window.console && console.log('channel index:',channelIndex);
//window.console && console.log('field index:',fieldIndex);
//window.console && console.log('update series name:',dynamicChart.series[chartSeriesName].name);
//window.console && console.log('channel keys name:',channelKeys[channelIndex].fieldList[fieldIndex].name);
}
});
})(channelIndex);
}
}
}, 15000);
}
}
}
},
rangeSelector: {
buttons: [{
count: 30,
type: 'minute',
text: '30M'
}, {
count: 12,
type: 'hour',
text: '12H'
}, {
count: 1,
type: 'day',
text: 'D'
}, {
count: 1,
type: 'week',
text: 'W'
}, {
count: 1,
type: 'month',
text: 'M'
}, {
count: 1,
type: 'year',
text: 'Y'
}, {
type: 'all',
text: 'All'
}],
inputEnabled: true,
selected: 3
},
title: {
text: ''
},
plotOptions: {
line: {
gapSize:5
//color: '#d62020'
// },
// bar: {
//color: '#d52020'
// },
// column: {
},
series: {
marker: {
radius: 2
},
animation: true,
step: false,
turboThrehold:1000,
borderWidth: 0
}
},
tooltip: {
valueDecimals: 1,
valueSuffix: '',
xDateFormat:'%Y-%m-%d<br/>%H:%M:%S %p'
// reformat the tooltips so that local times are displayed
//formatter: function() {
//var d = new Date(this.x + (myOffset*60000));
//var n = (this.point.name === undefined) ? '' : '<br/>' + this.point.name;
//return this.series.name + ':<b>' + this.y + '</b>' + n + '<br/>' + d.toDateString() + '<br/>' + d.toTimeString().replace(/\(.*\)/, "");
//}
},
xAxis: {
type: 'datetime',
ordinal:false,
min: Date.UTC(2013,02,28),
dateTimeLabelFormats : {
hour: '%l %p',
minute: '%l:%M %p'
},
title: {
text: 'test'
}
},
yAxis: [{
title: {
text: 'Temperature °C'
},
id: 'T'
}, {
title: {
text: 'Humidity %'
},
opposite: true,
id: 'H'
},{
title: {
text: 'micrograms/cubic meter'
},
opposite: false,
id: 'P'
}
],
exporting: {
enabled: true,
csv: {
dateFormat: '%d/%m/%Y %I:%M:%S %p'
}
},
legend: {
enabled: true
},
navigator: {
baseSeries: 0, //select which series to show in history navigator, First series is 0
series: {
includeInCSVExport: false
}
},
series: []
//series: [{data:[[getChartDate("2013-06-16T00:32:40Z"),75]]}]
};
// add all Channel data to the chart
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
for (var fieldIndex=0; fieldIndex<channelKeys[channelIndex].fieldList.length; fieldIndex++) // add each field
{
window.console && console.log('Channel '+channelIndex+' field '+fieldIndex);
chartOptions.series.push({data:channelKeys[channelIndex].fieldList[fieldIndex].data,
index:channelKeys[channelIndex].fieldList[fieldIndex].series,
yAxis:channelKeys[channelIndex].fieldList[fieldIndex].axis,
//visible:false,
name: channelKeys[channelIndex].fieldList[fieldIndex].name});
}
}
// set chart labels here so that decoding occurs properly
//chartOptions.title.text = data.channel.name;
chartOptions.xAxis.title.text = 'Date';
// draw the chart
dynamicChart = new Highcharts.StockChart(chartOptions);
// update series number to account for the navigator series (The historical series at the bottom) which is the first series.
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
for (var fieldIndex=0; fieldIndex<channelKeys[channelIndex].fieldList.length; fieldIndex++) // and each field
{
for (var seriesIndex=0; seriesIndex<dynamicChart.series.length; seriesIndex++) // compare each series name
{
if (dynamicChart.series[seriesIndex].name == channelKeys[channelIndex].fieldList[fieldIndex].name)
{
channelKeys[channelIndex].fieldList[fieldIndex].series = seriesIndex;
}
}
}
}
// add all history
//dynamicChart.showLoading("Loading History..." );
window.console && console.log('Channels: ',channelKeys.length);
for (var channelIndex=0; channelIndex<channelKeys.length; channelIndex++) // iterate through each channel
{
window.console && console.log('channelIndex: ',channelIndex);
(function(channelIndex)
{
//load only 1 set of 8000 points
loadChannelHistory(channelIndex,channelKeys[channelIndex].channelNumber,channelKeys[channelIndex].key,channelKeys[channelIndex].fieldList,0,1);
}
)(channelIndex);
}
}
});
function loadOneChannel(){
// load a channel selected in the popUp menu.
var selectedChannel=document.getElementById("Channel Select");
var maxLoads=document.getElementById("Loads").value ;
var channelIndex = selectedChannel.selectedIndex;
loadChannelHistory(channelIndex,channelKeys[channelIndex].channelNumber,channelKeys[channelIndex].key,channelKeys[channelIndex].fieldList,0,maxLoads);
}
// load next 8000 points from a ThingSpeak channel and addPoints to a series
function loadChannelHistory(sentChannelIndex,channelNumber,key,sentFieldList,sentNumLoads,maxLoads) {
var numLoads=sentNumLoads
var fieldList= sentFieldList;
var channelIndex = sentChannelIndex;
var first_Date = new Date();
if (typeof fieldList[0].data[0] != "undefined") first_Date.setTime(fieldList[0].data[0][0]+7*60*60*1000);//adjust for 7 hour difference from GMT (Zulu time)
else if (typeof fieldList[1].data[0] != "undefined") first_Date.setTime(fieldList[1].data[0][0]+7*60*60*1000);
else if (typeof fieldList[2].data[0] != "undefined") first_Date.setTime(fieldList[2].data[0][0]+7*60*60*1000);
else if (typeof fieldList[3].data[0] != "undefined") first_Date.setTime(fieldList[3].data[0][0]+7*60*60*1000);
else if (typeof fieldList[4].data[0] != "undefined") first_Date.setTime(fieldList[4].data[0][0]+7*60*60*1000);
else if (typeof fieldList[5].data[0] != "undefined") first_Date.setTime(fieldList[5].data[0][0]+7*60*60*1000);
else if (typeof fieldList[6].data[0] != "undefined") first_Date.setTime(fieldList[6].data[0][0]+7*60*60*1000);
else if (typeof fieldList[7].data[0] != "undefined") first_Date.setTime(fieldList[7].data[0][0]+7*60*60*1000);
var end = first_Date.toJSON();
window.console && console.log('earliest date:',end);
window.console && console.log('sentChannelIndex:',sentChannelIndex);
window.console && console.log('numLoads:',numLoads);
// get the Channel data with a webservice call
$.getJSON('https://www.thingspeak.com/channels/'+channelNumber+'/feed.json?callback=?&offset=0&start=2013-01-20T00:00:00;end='+end+';key='+key, function(data)
{
// if no access
if (data == '-1') {
$('#chart-container').append('This channel is not public. To embed charts, the channel must be public or a read key must be specified.');
window.console && console.log('Thingspeak Data Loading Error');
}
for (var fieldIndex=0; fieldIndex<fieldList.length; fieldIndex++) // iterate through each field
{
//fieldList[fieldIndex].data =[];
for (var h=0; h<data.feeds.length; h++) // iterate through each feed (data point)
{
var p = []//new Highcharts.Point();
var fieldStr = "data.feeds["+h+"].field"+fieldList[fieldIndex].field;
var v = eval(fieldStr);
p[0] = getChartDate(data.feeds[h].created_at);
p[1] = parseFloat(v);
// if a numerical value exists add it
if (!isNaN(parseInt(v))) { fieldList[fieldIndex].data.push(p); }
}
fieldList[fieldIndex].data.sort(function(a,b){return a[0]-b[0]});
dynamicChart.series[fieldList[fieldIndex].series].setData(fieldList[fieldIndex].data,false);
//dynamicChart.series[fieldList[fieldIndex].series].addPoint(fieldList[fieldIndex].data,false);
//fieldList[fieldIndex].name = eval("data.channel.field"+fieldList[fieldIndex].field);
//window.console && console.log('data added to series:',fieldList[fieldIndex].series,fieldList[fieldIndex].data);
}
channelKeys[channelIndex].fieldList=fieldList;
dynamicChart.redraw()
window.console && console.log('channel index:',channelIndex);
numLoads++;
if (numLoads<maxLoads) {loadChannelHistory(channelIndex,channelNumber,key,fieldList,numLoads,maxLoads);}
});
}
</script>
<title>Air Quality Monitoring Station</title>
</head>
<body style=" background-color: white;">
<div id="chart-container" style="height: 600px;"><br>
Air Quality Monitoring Station<br>
</div>
<div id="below chart"> <button style="width: 89px; margin-top: -18px;" value="Hide All"
name="Hide All Button"
onclick="HideAll();">Hide
All</button><button style="width: 162px; margin-top: -18px;" value="Load More Data"
name="Load More Data"
onclick="loadOneChannel();">Load
More Historical Data </button>
<select id="Channel Select">
</select>
<select id="Loads">
<option value="1">1 Load</option>
<option value="2">2 Loads</option>
<option value="3">3 Loads</option>
<option value="4">4 Loads</option>
<option value="5" selected="selected">5 Loads</option>
<option value="6">6 Loads</option>
<option value="7">7 Loads</option>
<option value="8">8 Loads</option>
<option value="9">9 Loads</option>
<option value="10">10 Loads</option>
<option value="15">15 Loads</option>
<option value="20">20 Loads</option>
<option value="25">25 Loads</option>
<option value="30">30 Loads</option>
<option value="40">40 Loads</option>
<option value="50">50 Loads</option>
</select>
<input id="Update" name="Update" type="checkbox"><span style="font-family: Lucida Grande;">Update
Chart</span> <span id="Latency" style="font-family: Lucida Grande;">(Latency)</span>
</div>
</body>
</html>