Develop Reference

Change highcharts data label position

This is my jsfiddle link http://jsfiddle.net/bb1m6xyk/1/
I want that all my labels like my data: 0 etc are positioned at the base and in center of each zone.
$('#container').highcharts({
chart: {
type: 'area'
},
yAxis: {
title: {
text: 'Percent'
}
},
plotOptions: {
area: {
enableMouseTracking: false,
showInLegend: false,
stacking: 'percent',
lineWidth: 0,
marker: {
enabled: false
},
dataLabels: {
className:'highlight',
enabled: true,
formatter: function () {
console.log(this);
return this.point.myData
}
}
}
},
series: [{
name: 'over',
color: 'none',
data: overData
}, {
id: 's1',
name: 'Series 1',
data: data,
showInLegend: true,
zoneAxis: 'x',
zones: zones
}]
});
Is this possible? I tried it using className on dataLabels but it doesn't take that into effect.
Any help is appreciated.

There are a few ways to render labels on a chart.
The Renderer
Live example: http://jsfiddle.net/11rj6k6p/
You can use Renderer.label to render the label on the chart - this is a low level approach but it gives you full control how the labels will be rendered. You can loop the zones and set x and y attributes of the labels, e.g. like this:
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function drawLabels() {
const zonesLabels = this.zonesLabels
const series = this.get('s1')
const { yAxis, xAxis } = series
const y = yAxis.toPixels(0) - 20 // -20 is an additional offset in px
series.zones.reduce((prev, curr, i) => {
if (curr.value !== undefined) {
const x = (xAxis.toPixels(prev.value) + xAxis.toPixels(curr.value)) / 2
if (!zonesLabels[i]) {
zonesLabels.push(
this.renderer.label(labels[i], x, y).add().attr({
align: 'center',
zIndex: 10
})
)
} else {
zonesLabels[i].attr({ x, y })
}
}
return curr
}, { value: series.dataMin })
}
Then set the function on load - to render the labels, and on redraw - to reposition the labels if the chart size changed.
chart: {
type: 'area',
events: {
load: function() {
this.zonesLabels = []
drawLabels.call(this)
},
redraw: drawLabels
}
},
The annotations module
Live example: http://jsfiddle.net/a5gb7aqz/
If you do not want to use the Renderer API, you can use the annotations module which allows to declare labels in a chart config.
Add the module
<script src="https://code.highcharts.com/modules/annotations.js"></script>
Map zones to the labels config object
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function annotationsLabels() {
const zonesLabels = []
zones.reduce((prev, curr, i) => {
zonesLabels.push({
text: labels[i],
point: {
x: (prev.value + curr.value) / 2,
y: 0,
xAxis: 0,
yAxis: 0
}
})
return curr
}, { value: 0 })
return zonesLabels
}
Set the annotations options
annotations: [{
labels: annotationsLabels(),
labelOptions: {
shape: 'rect',
backgroundColor: 'none',
borderColor: 'none',
x: 0,
y: 0
}
}],
Data labels and a new series
Live example: http://jsfiddle.net/wpk1495g/
You can create a new scatter series which will not respond to mouse events and it won't be visible in the legend. The labels can be displayed as data labels.
Map zones to series points
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function seriesData() {
const points = []
zones.reduce((prev, curr, i) => {
points.push( {
x: (prev.value + curr.value) / 2,
y: 50,
dataLabels: {
enabled: true,
format: labels[i]
}
})
return curr
}, { value: 0 })
return points
}
Set the series options in the chart config
, {
type: 'scatter',
enableMouseTracking: false,
showInLegend: false,
data: seriesData(),
zIndex: 10,
color: 'none',
dataLabels: { style: { textOutline: false }, x: 0, y: 0 }
}
Output

Highchart: is it possible to change the font of the label in Highchart via a click of a button?

Link to JFiddle: http://jsfiddle.net/z24ysp8m/3/
Here is the code in concern:
$(function() {
var chartData = [-5, 5, -10, -20];
var timeStamps = [];
var index = 1;
var pWidth = 25;
$('#b').click(function(){
timeStamps.push(new Date());
var buttonB = document.getElementById('b');
buttonB.disabled = true;
/* if(index == 1){
$('#container').highcharts().xAxis[0].labels.style = {"color":"#6D869F","fontWeight":"bold"};
}*/
if(index <= chartData.length){
$('#container').highcharts().series[0].remove();
$('#container').highcharts().addSeries({pointPlacement: 'on', data: [chartData[index - 1]],
pointWidth: pWidth});
$('#container').highcharts().xAxis[0].setCategories([index]);
setTimeout(function(){index++;}, 2000);
}
if(index < chartData.length){
setTimeout(function(){buttonB.disabled = false;}, 1500);
}else{
setTimeout(function(){buttonB.style.visibility="hidden";}, 1500);
}
if(index == chartData.length - 1){
setTimeout(function(){document.getElementById('b').innerHTML = 'Lasst Period';}, 1500);
}
console.log(timeStamps);
})
// $(document).ready(function () {
Highcharts.setOptions({
lang: {
decimalPoint: ','
},
});
$('#container').highcharts({
chart: {
type: 'column',
width: 170,
marginLeft: 74,
marginRight: 16,
marginBottom: 60
},
title: {
text: ''
},
colors: [
'#0000ff',
],
xAxis: {
title: {
text: ''
// offset: 23
},
gridLineWidth: 1,
startOnTick: true,
tickPixelInterval: 80,
categories: ['Filler'], // used only to make sure that the x-axis of the two charts
// are aligned, not shown on the chart via setting the font color to white
min:0,
max:0,
labels: {
style: {
color: 'white'
}
}
},
yAxis: {
title: {
text: 'Value'
},
min: -20,
max: 20,
tickPixelInterval: 40
},
plotOptions: {
series: {
animation: {
duration: 1000
}
}
},
credits: {
enabled: false
},
tooltip: {
formatter: function () {
return Highcharts.numberFormat(this.y, 2) + '%';
}
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
data: [],
pointWidth: pWidth
}]
});
// });
});
I want that the x-axis has no label when the page is loaded (The reason why I added in a filler text with white font is due to the fact that I don't want the size of the chart change upon click of a button). And upon the click of button, the label should be consecutively 1, 2, 3, 4...
Is there anyway around it except for setting marginBottom (which is not very precise)?

You may use .css() method for changing fill color of your text label.
Here you can find information about this method:
http://api.highcharts.com/highcharts#Element.css
Highcharts.each($('#container').highcharts().xAxis[0].labelGroup.element.children, function(p, i) {
$(p).css({
fill: 'red'
});
});
And here you can find simple example how it can work:
http://jsfiddle.net/z24ysp8m/6/

High Charts windrose from API data (JSON)

I'm quite new here (and to web development in general), so please forgive any misuses that I perpetuate... I'm trying to create a basic windrose plot with data returned (in JSON) from the MesoWest Mesonet API service. I'm using HighCharts (or attempting to), and cannot quite get it to work. Perhaps this is due to my methodology of obtaining the data from the API itself as I'm a complete amateur in this regard. The following is the Javascript code, followed by the HTML for the page. Could someone please take a look and let me know what I've done wrong? Nothing displays on the page when I attempt to load it. In addition, if you're curious as to the specifics of an API call for MesoWest, like the one I've employed here, please see http://mesowest.org/api/docs/
The .js script:
var windrose = {
divname: "windrosediv",
tkn: "eecfc0259e2946a68f41080021724419",
load:function()
{
console.log('loading')
if (!window.jQuery) {
var script = document.createElement("script");
script.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js';
script.type = 'text/javascript';
document.getElementByTagName("head")[0].appendChild(script);
setTimeout(pollJQuery, 100)
return
}
this.div = $("#"+this.divname);
this.request('WBB');
},
pollJQuery:function()
{
if (!window.jQuery) {
setTimeout(pollJQuery,100);
} else {
load();
}
},
request:function(stn){
console.log("making a request")
$.getJSON(http://api.mesowest.net/v2/stations/nearesttime?callback=?',
{
stid:stn,
within:1440,
units:'english',
token:windrose.tkn
}, this.receive);
},
receive:function (data)
{
console.log(data,windrose);
stn = data.STATION[0]
dat = stn.OBSERVATIONS
spd += Math.round(dat.wind_speed_value_1.value)
dir += dat.wind_direction_value_1.value
windDataJSON = [];
for (i = 0; i < dir.length; i++) {
windDataJSON.push([ dir[i], spd[i]
]);
},
}
$(function () {
var categories = ['0', '45', '90', '135', '180', '225', '270', '315'];
$('#container').highcharts({
series: [{
data: windDataJSON
}],
chart: {
polar: true,
type: 'column'
},
title: {
text: 'Wind Rose'
},
pane: {
size: '85%'
},
legend: {
align: 'right',
verticalAlign: 'top',
y: 100,
layout: 'vertical'
},
xAxis: {
min: 0,
max: 360,
type: "",
tickInterval: 22.5,
tickmarkPlacement: 'on',
labels: {
formatter: function () {
return categories[this.value / 22.5] + '°';
}
}
},
yAxis: {
min: 0,
endOnTick: false,
showLastLabel: true,
title: {
text: 'Frequency (%)'
},
labels: {
formatter: function () {
return this.value + '%';
}
},
reversedStacks: false
},
tooltip: {
valueSuffix: '%'
},
plotOptions: {
series: {
stacking: 'normal',
shadow: false,
groupPadding: 0,
pointPlacement: 'on'
}
}
});
});
And the HTML:
<!DOCTYPE html>
<html>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/highcharts-more.js"></script>
<script src="https://code.highcharts.com/modules/data.js">`enter code </script>
<script src="https://code.highcharts.com/modules/exporting.js"> </script>
<div id="container" style="min-width: 420px; max-width: 600px; height: 400px; margin: 0 auto"></div>
<p class="ex">
<script type="text/javascript" src="http://home.chpc.utah.edu/~u0675379/apiDemos/windTest.js"></script>
</p>
</html>
I appreciate any guidance in this regard, thanks!!!
-Will

#W.Howard, I think the problem here is how you are treating and preparing the JSON response from the API. Consider the following JavaScript to retrieve and parse out the data:
/*
* Helper function
* scalarMultiply(array, scalar)
*/
function scalarMultiply(arr, scalar) {
for (var i = 0; i < arr.length; i++) {
arr[i] = arr[i] * scalar;
}
return arr;
}
/*
* getQuery(station, api_token)
*/
function getQuery(station, mins, api_token) {
$.getJSON('http://api.mesowest.net/v2/stations/timeseries?callback=?', {
/* Specify the request parameters here */
stid: station,
recent: mins, /* How many mins you want */
obtimezone: "local",
vars: "wind_speed,wind_direction,wind_gust",
jsonformat: 2, /* for diagnostics */
token: api_token
},
function(data) {
try {
windSpeed = data.STATION[0].OBSERVATIONS.wind_speed_set_1;
windDir = data.STATION[0].OBSERVATIONS.wind_direction_set_1;
windGust = data.STATION[0].OBSERVATIONS.wind_gust_set_1;
} catch (err) {
console.log("Data is invalid. Check your API query");
console.log(this.url);
exit();
}
/* Convert from knots to mph */
windSpeed = scalarMultiply(windSpeed, 1.15078);
//windGust = scalarMultiply(windGust, 1.15078);
/* Create and populate array for plotting */
windData = [];
for (i = 0; i < windSpeed.length; i++) {
windData.push([windDir[i], windSpeed[i]]);
}
/* Debug */
// console.log(windData);
console.log(this.url);
plotWindRose(windData, mins);
})
};
What we had now is an 2D array with wind direction and wind speed that we can pass to the plotting function. Below is the updated plotting function:
/*
* Plot the wind rose
* plotWindRose([direction, speed])
*/
function plotWindRose(windData, mins) {
/*
* Note:
* Because of the nature of the data we will accept the HighCharts Error #15.
* --> Highcharts Error #15 (Highcharts expects data to be sorted).
* This only results in a performance issue.
*/
var categories = ["0", "45", "90", "135", "180", "225", "270", "315"];
$('#wind-rose').highcharts({
series: [{
name: "Wind Speed",
color: '#cc3000',
data: windData
}],
chart: {
type: 'column',
polar: true
},
title: {
text: 'Wind Direction vs. Frequency (Last ' + mins/60. + ' hours)'
},
pane: {
size: '90%',
},
legend: {
align: 'right',
verticalAlign: 'top',
y: 100,
text: "Wind Direction"
},
xAxis: {
min: 0,
max: 360,
type: "",
tickInterval: 45,
tickmarkPlacement: 'on',
labels: {
formatter: function() {
return categories[this.value / 45] + '\u00B0';
}
}
},
yAxis: {
min: 0,
endOnTick: false,
showLastLabel: true,
title: {
text: 'Frequency (%)'
},
labels: {
formatter: function() {
return this.value + '%';
}
},
reversedStacks: false
},
tooltip: {
valueSuffix: '%'
},
plotOptions: {
series: {
stacking: 'normal',
shadow: false,
groupPadding: 20,
pointPlacement: 'on'
}
}
});
}
You can see it all here at https://gist.github.com/adamabernathy/eda63f14d79090ab1ea411a8df1e246e . Best of luck!

HighCharts dont get value

I try to see temperature history from sqlite database, but i don't get value from server side. I use node.js, socket.io and HighCharts library. I think, its client side problem. Server side:
io.sockets.on('connection', function(socket){
setInterval(function(){
var current_temp = db.all("SELECT * FROM (SELECT * FROM temp_irasai WHERE laikas ORDER BY laikas);",
function(err, rows){
if (err){
console.log('Error serving querying database. ' + err);
return;
}
data = {temp_irasai:[rows]};
socket.emit('istorija', data);
});
}, 5000);
});
Client side:
<script type="text/javascript">
var socket = io.connect('http://ip:3000');
$(document).ready(function() {
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
zoomType: 'x',
spaceRight: 20,
events: {
load: function (){
socket.on('istorija', function(data){
var series = chart.series[0];
var i = 0;
while (data.temp_irasai[0][i])
{
series.data.push([data.temp_irasai[0][i].laikas, data.temp_irasai[0][i].laipsnis]);
i++;
}
chart.addSeries(series);
});
}
}
},
title: {
text: 'Temperatūra'
},
subtitle: {
text: 'Norint priartinti paspauskite ant grafiko ir pažymekite norimą plotą',
align: 'right',
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150,
maxZoom: 20 * 1000,
title: {
text: 'Time',
margin: 15
}},
yAxis: {
minPadding: 0.2,
maxPadding: 0.2,
showFirstLabel: false,
title: {
text: 'Temperatūra \u00B0C',
margin: 15
}},
plotOptions: {
area: {
fillColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1},
stops: [
[0, Highcharts.getOptions().colors[0]],
[1, 'rgba(2,0,0,0)'],
]
},
lineWidth: 1,
marker: {
enabled: false,
states: {
hover: {
enabled: true,
radius: 5
}
}
},
shadow: false,
states: {
hover: {
lineWidth: 1
}
},
threshold: null
},
},
series: [{
name: 'DS18B20 jutiklis (\u00B10.5\u00B0C)',
type: 'area',
data: []
}]
});
});
</script>
and database example:
CREATE TABLE temp_irasai(laikas integer PRIMARY KEY, laipsnis real);
INSERT INTO "temp_irasai" VALUES(1399533644551,20.4);
INSERT INTO "temp_irasai" VALUES(1399533646507,20.4);
INSERT INTO "temp_irasai" VALUES(1399533646547,20.4);
INSERT INTO "temp_irasai" VALUES(1399542709224,21.5);
COMMIT;

This part is just wrong:
load: function () {
socket.on('istorija', function (data) {
var series = chart.series[0];
var i = 0;
while (data.temp_irasai[0][i]) {
series.data.push([data.temp_irasai[0][i].laikas, data.temp_irasai[0][i].laipsnis]);
i++;
}
chart.addSeries(series);
});
}
You should add points, or use setData, like this:
load: function () {
socket.on('istorija', function (data) {
var series = chart.series[0];
var i = 0;
var d = [];
while (data.temp_irasai[0][i]) {
d.push([data.temp_irasai[0][i].laikas, data.temp_irasai[0][i].laipsnis]);
i++;
}
series.setData(d);
});
}

There is no data is given in your series set your values data in it, it will loads highcharts for sure, Good Luck!
type: 'area',
data: []
add Series data here.

Highcharts + Highslide: When opening a new highslide popup or clicking anywhere else, close any previously opened popups

So, I discovered that when you have are utilizing highslides in conjuction with highcharts data, its possible to keep clicking new datapoints and have an endless number of modal windows pop up. I wanted to build something that will close an existing highslide popup window if you open a new highslide or if you click anywhere else, either on the screen or on a filter.
I wrote this little function and added it to my beginning statement but it did not work.
<body onclick="javascript:parent.window.hs.close();">
And here is my full example:
The question is, can someone show me an example where I can accomplish my above described behavior?
$(function () {
$('#container').highcharts({
chart: {
type: 'scatter',
zoomType: 'xy'
},
title: {
text: 'Q1 Eanings and Outlook Forecast',
x: -100
},
subtitle: {
text: 'professional',
x:-100
},
xAxis: {
title: {
enabled: false,
text: 'Future Outlook'
},
labels:{formatter: function() {} },
startOnTick: true,
endOnTick: true,
showLastLabel: true
},
yAxis: {
title: {
enabled:false,
text: 'Current Quarter'
},
labels: {
formatter: function() {
//return this.value + ' ';
}
},
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'top',
// x: 100,
y: 70,
floating: false,
backgroundColor: '#FFFFFF',
borderWidth: 1
},
load: function() {
var legend = $('#container .highcharts-legend');
var x = legend.position().left;
var y = legend.position().top - (this.chartHeight - this.plotTop - this.plotHeight - this.options.chart.spacingBottom);
legend.attr({
transform: 'translate(' + x + ',' + y + ')'
});
},
plotOptions: {
scatter: {
marker: {
radius: 5,
states: {
hover: {
enabled: true,
lineColor: 'rgb(100,100,100)'
}
}
},
states: {
hover: {
marker: {
enabled: true
}
}
},
tooltip: {
headerFormat: '<b>{series.name}:</b><br>',
pointFormat: '{point.hover}<br><br><b>Current Q: </b>{point.y}/100<br><b>Outlook: </b>{point.x}/100<br><br><div style="text-align:center;">(click for more detail)</div>'
},
cursor: 'pointer',
point: {
events: {
click: function(event) {
hs.htmlExpand(null, {
pageOrigin: {
x: this.pageX,
y: this.pageY
},
headingText: this.ticker,
maincontentText: '<b>Detail:</b> ' + this.info,
width: 250
});
hs.Expander.prototype.onBeforeClose = function(sender) {
}
},
}
},
events: {
legendItemClick: function(event) {
if (!this.visible)
return true;
var seriesIndex = this.index;
var series = this.chart.series;
for (var i = 0; i < series.length; i++)
{
if (series[i].index != seriesIndex)
{
series[i].visible ? series[i].hide() : series[i].show();
}
}
return false;
}
},
}
},
series: [{
name: 'Weak Outlook (24)',color: 'red',data: [
{x: 40,y:10,ticker:'Michael Kors: (KORS)',info: 'O,.pyjxkne<br>1Q xjkxqs', hover:'Gtext<br>1Qlotatt<br>read more'},
{x: 20,y:50,ticker:'Soeuoeuoeu',info:'Doeuoeuoeull...<br><br>read more'},
{x:0,y:0,ticker:'Zynga: (ZNGA)'},
{x:3,y:4,ticker:'Avid: (AVID)'},
{x:30,y:10,ticker:'JCPenny: (JCP)'},
{x:29,y:25,ticker:'Deckers Outdoor: (DECK)'},
{x:25,y:5,ticker:'Zynga: (ZNGA)'},
{x:6,y:34,ticker:'Avid: (AVID)'},
{x:8,y:27,ticker:'JCPenny: (JCP)'},
{x:14,y:35,ticker:'Deckers Outdoor: (DECK)'},
{x:35,y:23,ticker:'Nutrisystem Corp: (NTRI)'},
]},
{name:'Strong Outlook (25)',color:'green',data:[
{x:100,y:100,ticker:'The Gap: (GPS)'},
{x:72,y:82,ticker:'Sodastream Intl: (SODA)'},
{x:82,y:74,ticker:'Under Armour: (UA)'},
{x:71,y:90,ticker:'Intuitive Surgical: (ISRG)'},
{x:88,y:69,ticker:'McDonalds: (MCD)'},
{x:95,y:87,ticker:'Lumber Liquidators: (LL)'},
{x:77,y:91,ticker:'Apple: (AAPL)'},
{x:96,y:78,ticker:'Walgreen Company: (WAG)'}, {x:100,y:100,ticker:'The Gap: (GPS)'},
{x:73,y:72,ticker:'Sodastream Intl: (SODA)'},
{x:84,y:74,ticker:'Under Armour: (UA)'},
{x:91,y:80,ticker:'Intuitive Surgical: (ISRG)'},
{x:68,y:93,ticker:'McDonalds: (MCD)'},
{x:95,y:67,ticker:'Lumber Liquidators: (LL)'},
{x:76,y:67,ticker:'Apple: (AAPL)'},
{x:79,y:84,ticker:'Walgreen Company: (WAG)'},
]},
{name:'Inline Company Performance (23)',color:'darkgrey',data:[
{x:40,y:44,ticker:'GIII'},
{x:53,y:43,ticker:'BNNY'},
{x:55,y:49,ticker:'SNE'},
{x:57,y:58,ticker:'WTW'},
{x:60,y:60,ticker:'LULU'},
{x:70,y:66,ticker:'FB'},
{x:51,y:24,ticker:'GIII'},
{x:45,y:26,ticker:'FB'},
{x:43,y:53,ticker:'BNNY'},
{x:47,y:59,ticker:'SNE'},
{x:51,y:48,ticker:'WTW'},
{x:56,y:40,ticker:'LULU'},
{x:59,y:52,ticker:'FB'},
{x:0,y:100,ticker:'Nutrisystem Corp: (NTRI)'},
]},
]
});
});

If allowMultipleInstances is set to false, opened expanders will close when you click to open another. Add this right after the included highslide.config.js file:
<script type="text/javascript">
hs.allowMultipleInstances = false;
</script>