Develop Reference

highcharts - 2 date picker questions

1) I am wondering how I can remove the date picker from the right side of the chart? I really only need the left rangeSelector buttons i.e. 24 hours, 6 hours...
2) is there anyway to turn off the dataLabels when you click on one of the rangeSelector options as well?
When zoomed in to show 5 minutes worth of data the dataLabels are handy, but when looking at 24 hours worth they make the chart quite unusable due to crowding. It would be nice if they could be automagically turned off when I zoomed out.
Huge thanks for your help, if this is indeed possible.
For the second option, i'm looking to toggle the visibility of
plotOptions:{series: {
dataLabels:{
enabled:true,

Fiddle Link
After customization of range selector from Highstock Example
/**
* Load new data depending on the selected min and max
*/
function afterSetExtremes(e) {
var chart = Highcharts.charts[0];
chart.showLoading('Loading data from server...');
$.getJSON('https://www.highcharts.com/samples/data/from-sql.php?start=' + Math.round(e.min) +
'&end=' + Math.round(e.max) + '&callback=?', function (data) {
chart.series[0].setData(data);
chart.hideLoading();
});
}
// See source code from the JSONP handler at https://github.com/highcharts/highcharts/blob/master/samples/data/from-sql.php
$.getJSON('https://www.highcharts.com/samples/data/from-sql.php?callback=?', function (data) {
// Add a null value for the end date
data = [].concat(data, [[Date.UTC(2011, 9, 14, 19, 59), null, null, null, null]]);
// create the chart
Highcharts.stockChart('container', {
chart: {
type: 'candlestick',
zoomType: 'x'
},
navigator: {
adaptToUpdatedData: false,
series: {
data: data
}
},
scrollbar: {
liveRedraw: false
},
title: {
text: 'AAPL history by the minute from 1998 to 2011'
},
subtitle: {
text: 'Displaying 1.7 million data points in Highcharts Stock by async server loading'
},
rangeSelector: {
buttons: [{ //customization of buttons
type: 'hour',
count: 24,
text: '24h'
}, {
type: 'hour',
count: 6,
text: '6h'
}, {
type: 'minute',
count: 5,
text: '5m'
}],
inputEnabled: false, // it remove datepicker
},
xAxis: {
events: {
afterSetExtremes: afterSetExtremes,
setExtremes: function(e) {
if(typeof(e.rangeSelectorButton)!== 'undefined')
{
if(e.rangeSelectorButton.text=='5m'){
addlables(); //function to add data label
}else{
removelables(); // function to remove data lable
}
}
}
},
minRange: 300 * 1000 // 5min * 1000
},
yAxis: {
floor: 0
},
plotOptions:{
series: {
dataLabels:{
enabled:false,
}
}
},
series: [{
data: data,
dataGrouping: {
enabled: false
}
}]
});
});
function removelables(){
var chart = $('#container').highcharts();
var opt = chart.series[0].options;
opt.dataLabels.enabled = false;
chart.series[0].update(opt);
}
function addlables(){
var chart = $('#container').highcharts();
var opt = chart.series[0].options;
opt.dataLabels.enabled = true;
chart.series[0].update(opt);
}

Loading millions of points with Highcharts

I have a json dataset with millions of points.The structure is like this:
[[1436997600000,7],[....]]
The first number is a data and second one is a value.
I want to plot this in a highchart so that it doesn't take so much time to load the chart and to navigate in it. I followed this example: http://www.highcharts.com/stock/demo/lazy-loading
but can't get it work with my data. It take so much time to load and when I zoom the message 'loading from server' doesn't disappear. Can anyone help me on this please?
JS:
$(function () {
/**
* Load new data depending on the selected min and max
*/
function afterSetExtremes(e) {
var chart = $('#container').highcharts();
chart.showLoading('Loading data from server...');
$.getJSON('http://localhost/public_html/webservice.php/re/pap/' + Math.round(e.min) + '/' + Math.round(e.max), function (data) {
chart.series[0].setData(data);
chart.hideLoading();
});
}
// See source code from the JSONP handler at https://github.com/highcharts/highcharts/blob/master/samples/data/from-sql.php
$.getJSON('http://localhost/public_html/webservice.php/re/pap', function (data) {
// Add a null value for the end date
data = [].concat(data, [[Date.UTC(2016, 9, 14, 19, 59), null]]);
// create the chart
$('#container').highcharts('StockChart', {
chart : {
type: 'scatter',
zoomType: 'x'
},
navigator : {
adaptToUpdatedData: false,
series : {
data : data
}
},
scrollbar: {
liveRedraw: false
},
title: {
text: 'AAPL history by the minute from 1998 to 2011'
},
subtitle: {
text: 'Displaying 1.7 million data points in Highcharts Stock by async server loading'
},
rangeSelector : {
buttons: [{
type: 'hour',
count: 1,
text: '1h'
}, {
type: 'day',
count: 1,
text: '1d'
}, {
type: 'month',
count: 1,
text: '1m'
}, {
type: 'year',
count: 1,
text: '1y'
}, {
type: 'all',
text: 'All'
}],
inputEnabled: false, // it supports only days
selected : 4 // all
},
xAxis : {
events : {
afterSetExtremes : afterSetExtremes
},
minRange: 3600 * 1000 // one hour
},
yAxis: {
floor: 0
},
series : [{
data : data,
dataGrouping: {
enabled: false
}
}]
});
});
});
Fiddle: http://jsfiddle.net/f0u5c4pg/
Thanks in advance!

Highchart with label in custom intervals

I have a Highchart bar graph (column type) which will show the data for each of the dates. Now it is getting the values through AJAX and date range
can be selected. Because of size limitations, I need to display the date labels in 5 day interval if the date range selected is more than 10 days.
That is all bars needs to be shown, but the interval for labels should be in 5 days interval if the date range is more than 10 days. If it is 10 days or lower, it should show all the dates.
My graph config is like the following :
var chart = new Highcharts.Chart({
credits: {
enabled: false
},
legend: {
align: 'right',
verticalAlign: 'top',
layout: 'vertical',
x: 20,
y: 10
},
chart: {
renderTo: 'id_name',
type: 'column'
},
xAxis: {
categories: dates,
crosshairs: true
},
yAxis: {
title: {
text: 'Y Axis Title'
}
},
colors: ['#1A7BB9', '#18A689', '#21B9BB', '#F7A54A', '#EC4758'],
title: {
text: 'My title goes here'
},
subtitle: {
text: 'my subtitle goes here'
},
series: PHP formatted data goes here
});

I'm not sure about the interval (every fifth label should be displayed? Or you want to compare time-range to determine that?), but in general you have two solutions:
easier one: disable dataLabels by default (series.dataLabels.enabled = false) but enable that for a specific points, for example:
series: [{
data: [{
x: timestamp_1,
y: timestamp_1,
dataLabels: {
enabled: true
}
}, [timestamp_2, value_2], [timestamp_3, value_3], ... , {
x: timestamp_N,
y: timestamp_N,
dataLabels: {
enabled: true
}
}]
}]
harder one: wrap drawDataLabels method, and remove unnecessary labels:
(function (H) {
H.wrap(H.seriesTypes.column.prototype, 'drawDataLabels', function (p) {
var step = H.pick(this.options.dataLabels.step, 0),
iterator = 0;
p.call(this);
if(step) {
H.each(this.points, function (point) {
if (point.dataLabel) {
if (iterator % step !== 0) {
point.dataLabel = point.dataLabel.destroy();
}
iterator ++;
}
});
}
});
})(Highcharts)
jsFiddle for the second solution: http://jsfiddle.net/gL2kw73b/2/

Correctly plot time series in Highcharts/Highstock

I have large collection of data in the format [1421065200000, 1.72], where the first parameter is time in milliseconds and the second parameter is the value at that specific time. I have data array consisting of such data in large size. Now I want scrollable graph containing plot of such time and value data. Here is my javascript implementation to do so,
var dataArray; //This contains my data array i.e. ([[t1, v1],[t2, v2],...])
var minDate = dataArray[0][0];
var maxDate = dataArray[dataArray.length - 1][0];
var chartOption = {
chart: {
type: graphType,
renderTo: 'graph-container',
zoomType: 'x',
useUTC: false
},
title: {
text: 'Data from last 24 hours'
},
credits : {
enabled: false
},
xAxis: {
title: {
text: null
},
type: 'datetime',
dateTimeLabelFormats: {
second: '%Y-%m-%d<br/>%H:%M:%S',
minute: '%Y-%m-%d<br/>%H:%M',
hour: '%Y-%m-%d<br/>%H:%M',
day: '%Y<br/>%m-%d',
week: '%Y<br/>%m-%d',
month: '%Y-%m',
year: '%Y'
},
allowDecimals: false,
ordinal: false,
min: minDate,
max: maxDate
},
yAxis: {
title: {
text: null
}
},
plotOptions: {
series: {
pointStart: minDate,
pointInterval: 5 * 60 *1000
}
},
series: [{
name: parameterName,
data: dataArray
}],
exporting: {
enabled: false
}
};
parameterChart = new Highcharts.Chart(chartOption);
}
The chart shows incorrect data, the time value on x-axis doesn't match the value at y-axis. What is the most correct and efficient to show such time series. Should I use Highcharts or Highstock. Please guide me through this, with suggestion or maybe with solution.

What I did was, I used HighStock instead of HighCharts (since I needed scrollbar along x-axis for large collection of data). I was passing the date in my local time zone format, whereas the chart was using UTC. So, I disabled the use of UTC (alternative: I could have provided data in UTC and drawn the graph using the same, In my case I needed my local labels). I gave the minimum and maximum range to the x-axis through x-axis min and max configuration. Here is the sample of my code,
//dataArray contains the array of data [[x1, y1], [x2, y2], ...]
//x is Date, y is temperature value (say)
var minDate = dataArray[0][0];
var maxDate = dataArray[dataArray.length - 1][0];
//Disable use of UTC
Highcharts.setOptions({
global: {
useUTC: false
}
});
//Create graph options
var chartOption = {
chart: {
type: graphType, //line, bar, column, etc
renderTo: 'graph-container', //div where my graph will be drawn
zoomType: 'x' //Making x-axis zoomable/scrollable
},
title: {
text: 'Data from last 6 hours'
},
subtitle: {
text: document.ontouchstart === undefined ?
'Click and drag in the plot area to zoom in' :
'Pinch the chart to zoom in'
},
xAxis: {
title: {
text: null
},
type: 'datetime', //For time series, x-axis labels will be time
labels: {
//You can format the label according to your need
format: '{value:%H:%m}'
},
min: minDate,
max: maxDate,
minPadding: 0.05,
maxPadding: 0.05
},
yAxis: {
title: {
text: null
}
},
scrollbar: {
enabled: true
},
series: [{
name: "Temperature", //Name of the series
data: dataArray
}],
exporting: {
enabled: false
},
credits : {
enabled: false
}
};
//Finally create the graph
var myChart = new Highcharts.Chart(chartOption);

highchart json data points

I am breaking my head over this one.
i have an highchart with Json data. now would like to split the Json data in to 2 data points.
json data;
[1340283205000,5,32]
Explanation
time, number, number
The current chart works with time, number. Now i have added another datapoint but that dows not work.
function requestData() {
$.ajax({
url: 'php/hits_json.php',
success: function(point) {
var series = chart1.series[0],
shift = series.data.length > 20; // shift if the series is longer than 20
// add the point
chart1.series[0].addPoint(eval(point), true, shift);
// call it again after one second
setTimeout(requestData, 5000);
},
cache: false
});
}
$(document).ready(function() {
window.chart1 = new Highcharts.Chart({
chart: {
renderTo: 'container',
defaultSeriesType: 'areaspline',
events: {
load: requestData
}
},
title: {
text: 'Hits per 5 sec'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 100,
maxZoom: 10 * 10000
},
yAxis: {
min: 0,
minPadding: 0.25,
maxPadding: 0.1,
title: {
text: 'Hits',
margin: 40
}
},
plotOptions: {
series: {
dataLabels: {
enabled: true
},
marker: {
enabled: true
},
}
},
credits: {
enabled: false
},
series:
[{
name: 'Hits',
data: [0],lineWidth: 1
},{
name: 'Requests',
data: [0],lineWidth: 1
}]
});
});
Can someone point me in the right direction to solve my issue :)
Thnx in advance

You do not have the data labeled in your json. So the first two values are treated as x and y and the third is ignored. To properly format your data do something like the following:
var json = [
{
"x":1340283205000,
"y":5
},
{
"x":1340283205000,
"y":32
}];