Develop Reference

Using hours value with HighCharts

I have some trouble with HighCharts, i can't figure out how to use hours. For now i manage to use day hours (00 to 24) but it stop at 24 and restart at 0 because HighCharts consider that a day is pass. I just want to have an hour value like 1h30 or 55h10 for example.
Here is my chart :
$('#chart2').highcharts({
chart: {
type: 'column',
plotBackgroundColor: null,
plotBorderWidth: 0,
borderWidth: 2,
borderRadius: 7,
borderColor: '#D8D8D8',
width:dialogWidth/2,
height:dialogWidth/2+50
},
title: {
text: 'Time Worked per Day'
},
xAxis: {
type: 'category'
},
yAxis: {
type: 'datetime', //y-axis will be in milliseconds
dateTimeLabelFormats: { //force all formats to be hour:minute:second
second: '%H:%M',
minute: '%H:%M',
hour: '%H:%M',
day: '%d %H:%M',
week: '%H:%M',
month: '%H:%M',
year: '%H:%M'
},
title: {
text: 'Hours'
}
},
credits: {
enabled: false
},
legend: {
enabled: false
},
plotOptions: {
series: {
borderWidth: 0,
dataLabels: {
enabled: true,
formatter: function() {
return Highcharts.dateFormat('%Hh%M',new Date(this.y));
}
}
}
},
tooltip: {
formatter: function() {
return '<b>' + this.series.name +' : </b>' +
Highcharts.dateFormat('%Hh%M',new Date(this.y));
}
},
series: [{
name: 'Hours',
colorByPoint: true,
data: datas
}]
});
Hope you can help.

You don't need to use datetime for figuring this out. Since what you want to know is the number of hours per day, based on a value in milliseconds from your JSON data, you need to treat that value as a number, not a date.
Here's how I solved this problem:
First, I changed how you described the labels in your y-axis. I dropped the datetime type and used the formatter function to show the labels as whole hours. I also defined a tickInterval to show the labels one hour apart from one another.
yAxis: {
labels: {
formatter: function() {
// show the labels as whole hours (3600000 milliseconds = 1 hour)
return Highcharts.numberFormat(this.value/3600000,0);
}
},
title: {
text: 'Hours'
},
tickInterval: 3600000 // number of milliseconds in one hour
},
Next, I updated the code in your tooltip. We're taking your y values and making them whole hours. I set the second parameter in Highcharts.numberFormat to "2" so your toolip values show up with two decimal places (such as "2.50" for two-and-one-half hours).
tooltip: {
formatter: function() {
return '<b>' + this.series.name +' : </b>' +
Highcharts.numberFormat(this.y/3600000,2);
}
},
You can see a working fiddle, based off the sample data you provided, here: http://jsfiddle.net/brightmatrix/kk7odqez/
Here's a screenshot I took of the chart in this fiddle, showing how both the labels and tooltip now appear:
Thank you for the additional information you provided in your comments. That really helped me puzzle this out and get you what I hope is a useful solution.

Highcharts addPoint function show nothing

In the first case i apologize for the bad english i'm french :D
So I recently tried to show some timed data on HighchartsJs.
I try to receive the data using ajax and I made a function that add all the point that i want.
But when I try to load it i see the information on the cursor but no point is shown ! :/
Here is my success function on AJAX request :
success: function(resultat){
function addPoint(){
var chart = $('#graphResult').highcharts();
for(i in resultat){
chart.series[0].addPoint([Date.UTC(year, month, day, resultat[i]["time"].split(":")[0]), resultat[i]["value"]], true);
}
}
$('#graphResult').highcharts({
chart: {
type: 'spline',
events: {
load: addPoint
}
},
title: {
text: 'Température du jour'
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: { // don't display the dummy year
minute: '%H:%M',
hour: '%H:%M',
},
title: {
text: 'Heure'
}
},
yAxis: {
title: {
text: 'Température (°C)'
},
min: 0
},
tooltip: {
headerFormat: '<b>{series.name}</b><br>',
pointFormat: '{point.y:.2f} °C'
},
plotOptions: {
spline: {
marker: {
enabled: true
}
}
},
series: [{
name: "Température du " + String(day) + "/" + String(month) + "/" + String(year),
}]
});
}
As you can see, I have the information but no point is displayed : http://puu.sh/kwfnV/ad6302810a.png

As you said in comments, the problem is in data returned from server.
This is your Json:
[{"time":"09:00:00","value":"25"},{"time":"10:00:00","value":"30"}]
The "value" is string, then you have to parse as Float:
chart.series[0].addPoint(
[Date.UTC(year, month, day,
resultat[i]["time"].split(":")[0]),
parseFloat(resultat[i]["value"])], true
);
Fiddle: http://jsfiddle.net/69k80L58/4/

highcharts, stacked column, switchrowsandcolumns

I would like to be able to toggle between my groupings, (time/priority). I have a stacked column chart. there is a option to do this example. But it appears that it may only work with data already in a table, and I am bringing in my data as JSON.
my javascript is:
var chart_ops_support_times = new Highcharts.Chart({
chart: {
renderTo: 'chart_ops_support_times',
type: 'column'
},
title: {
text: '',
align: 'left'
},
subtitle: {
text: ' '
},
xAxis: {
categories: [
'one hour','2 hours','4 hours',
'8 hours','one day','2 days',
'one week','> one week'
]
},
yAxis: {
min: 0,
title: {
text: 'counts'
}
},
legend: {
align: 'left',
verticalAlign: 'top',
floating: true,
borderColor: '#CCC',
borderWidth: 1,
shadow: false,
symbolHeight: 10,
symbolWidth: 10
},
tooltip: {
formatter: function () {
return "<b>" + this.x + "</b><br/>" +
this.series.name + ': ' + this.y + "<br/>" +
'Total: ' + this.point.stackTotal;
}
},
plotOptions: {
column: {
stacking: 'normal'
}
},
credits: {
enabled: false
},
exporting: {
enabled: false
},
series: data
});

Data module won't work with JSON.
The Data module provides options for loading data from external sources, like CSV files, HTML tables or Google Spreadsheets, in a convenient way, using a declarative options set.
(http://www.highcharts.com/docs/working-with-data/data-module)
Instead of using data module for this, you could parse your data from JSON to be used one way or another.
Other option is to create hidden HTML table with data from JSON and later use Highcharts with data module and use table.

Highcharts data csv load

i'm having trouble displaying chart from my csv file.it doesn't plot chart. maybe my parser it is the problem. firebug says no major errors but i'm stuck i dont know how to make it work. please help..
this is how my csv looks like:
1437931522,30
1437931555,30.25
1437931768,30.25
1437931785,29.75
1437931802,30.25
1437932702,30.5
1437933601,29.75
1437933974,30
end of file is \n, but seems to not showing right here so I inserted extra enter
this is the code:
$(document).ready(function() {
Highcharts.setOptions({
global: {
useUTC: true
}
});
var mydata = [];
var times = [];
$.get('data.csv', function(data) {
// Split the lines
var lines = data.split('\n');
// Iterate over the lines and add categories or series
$.each(lines, function(lineNo, line) {
var items = line.split(',');
if(lineNo=>0)
{
times.push(new Date(items[0]*1000).toUTCString());
mydata.push(items[1])
}
});
});
$('#container').highcharts({
title: {
text: 'Temperature',
x: -20 //center
},
subtitle: {
text: 'test1',
x: -20
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: {
month: '%b %e, %Y',
year: '%Y'
},
categories: times
},
yAxis: {
title: {
text: 'Temperature (°C)'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
valueSuffix: '°C'
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle',
borderWidth: 0
},
series: [{
name: 'Temp',
data: mydata
}]
});
});``
is it ok, to get csv just with 'data.csv' if it is in the same directory or I have to set entire url?
this ismy fiddle:
http://jsfiddle.net/skoky2/yw25z6ow/1/

You should use the following code in your main module
data: {
csv: csv
},
Ref: data-module

1) If you use datetime type of xAxis, you should no use categories. You can define tickPositions
2) Point value should be number not string, so replace:
mydata.push(items[1])
with
mydata.push(parseFloat(items[1]))

i managed to get it work. but I noticed that this chart works only in IE 8, not in firefox or chrome. firefox with ie tab aslo works

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);