Develop Reference

How can I fit series with different lengths inside same axis with Apache ECharts?

I am using the Javascript ECharts library for displaying some data in my Angular 2+ app. I see that all the examples have some configuration like the following:
{
xAxis: [
data: ['00:00', '01:15', '02:30', '03:45']
],
series: [
{ name: 'A', type: 'line', data: [300, 280, 250, 260] },
{ name: 'B', type: 'line', data: [200, 120, 700, 290] },
]
}
But my data does not always provide values for all the labels in the x axis. For example, I would need to fit these arrays of custom objects into the chart:
const series1 = [{ label: '00:00', value: 300 }, { label: '02:30', value: 120 }];
const series2 = [{ label: '03:45', value: 890} ];
Of course, I could manually insert null or empty values in all the series so that all of them provide a value for each label in the axis. But I believe there should be a more straightforward way to achieve this in ECharts, as it is quite simple in other chart libraries like Kendo Charts.

Assuming you are working with line chart, below is the solution, anyway it is not that different for other charts, just make sure your xAxis type is category
Your xAxis type should be set to category, and data should be something like this
xAxis: [
type: 'category'
data: [ {name: '00:00'}, ....]
]
your series data should look like this
//dimx , value
const series2 = [['03:45', 890]];

You can use the 'time' format to fit series with different lengths.
Even the series, in this way, can have different lengths.
const colors = ['#5470C6', '#EE6666'];
let option = {
color: colors,
xAxis: {
type: 'time',
splitNumber: 11,
axisLabel: {
rotate: 45,
formatter: { hour: '{hh} : {mm}' },
},
},
yAxis: {
type: 'value',
},
series: [
{
name: 'Precipitation(2015)',
type: 'line',
data: [
['2012-03-01T12:22:33.123', 2.2],
['2012-03-01T12:23:33.123', 5.6],
['2012-03-01T12:24:33.123', 7.9],
['2012-03-01T12:25:33.123', 9.0],
['2012-03-01T12:28:33.123', 7.9],
['2012-03-01T12:30:33.123', 9.0],
['2012-03-01T12:32:33.123', 26.4],
['2012-03-01T12:40:33.123', 28.7],
],
},
{
name: 'Precipitation(2016)',
type: 'line',
data: [
['2012-03-01T12:22:33.123', 2.2],
['2012-03-01T12:23:33.123', 5.6],
['2012-03-01T12:38:33.123', 26.4],
['2012-03-01T12:40:33.123', 28.7],
],
},
],
};
result

Pushing data from json to Chart.js labels and data

I am using the Chart.js lib to make charts.
I have a json array that I am getting from a database.
Here is the console log of it: Data
I need to get the address, speed, and speed limit for every element in the list and use it in a chart.
My current code is as follows:
function ShowChart() {
var popCanvas = document.getElementById("speedLimitsChart");
console.dir(speeddata);
var labels = speeddata.map(function (e) {
return e.Adress;
});
var speed = speeddata.map(function (e) {
return e.Speed;
});
var speedlimits = speeddata.map(function (e) {
return e.SpeedLimits;
});
console.dir(labels);
var barChart = new Chart(popCanvas, {
type: 'bar',
data: {
datasets: [{
label: 'Speed',
data: speed,
backgroundColor: '#1E90FF'
}, {
label: 'Speed Limits',
data: speedlimits,
backgroundColor: '#B22222',
type: 'line'
}],
},
labels: labels
});
}
But in the result I only have the first element in my chart, and there are no labels.
Here is the output screen: Chart
I checked speed, speedlimits and labels and all of them have 2 elements. Can you please advise where my problem might be?

I found where is my problem
I need to write labels inside of data
Like this
var barChart = new Chart(popCanvas, {
type: 'bar',
data: {
labels: labels ,
datasets: [{
label: 'Speed',
data: speed,
backgroundColor: '#1E90FF'
}, {
label: 'Speed Limits',
data: speedlimits,
backgroundColor: '#B22222',
type: 'line'
}],
},
});

Highcharts X-axis labels on the side

I'm using Highcharts, and I used to be able to get labels on the side. But it's not working now, am I missing something? The red arrow is where I would want the labels like in the following example.
http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/bar-basic/
This is the code I'm using, I add the series in a dynamic way.
credits: {
enabled: false
},
chart: {
type: 'bar'
},
xAxis: {
categories: ['Jan', 'Feb'],
labels: {
enabled: true,
}
},
yAxis: {
min: 0,
max: 100,
title: {
text: 'Score',
align: 'high'
}
},
plotOptions: {
bar: {
dataLabels: {
enabled: true
}
}
}
});
// Add Series
var detailchart = $('#chart-detail').highcharts();
var categories = new Array;
// Set Chart Title
detailchart.setTitle({text: results[0].category});
$.each(results, function(i, data){
categories.push(data.name);
detailchart.addSeries({
name: data.name,
data: [data.score]
});
});
detailchart.xAxis[0].setCategories(["1", "2"]);
$('#chart-detail').highcharts().reflow();
Results is an array that looks like this (I get it through ajax):

As I understand from your code here, you wish to specify two categories with names 1 and 2 but you are not specifying any data for second category, So the only category that is showing on your chart is 1. Your data array for each series must have elements per each category. For example if you have two category you should consider having two data elements in each series. In this line data: [data.score] you are just specifying one element in data array. Your code should be something like this: (make it dynamic per your need)
$.each(results, function(i, data){
categories.push(data.name);
detailchart.addSeries({
name: data.name,
data: [data.score, 40], //40 is some data for your second category.
});
});
Demo: http://jsfiddle.net/u6crkatv/

Only what you need is use 4 series, each of them with single data point.
series: [{
name: 'Year 1800',
data: [107]
}, {
name: 'Year 1900',
data: [138]
}, {
name: 'Year 2008',
data: [973]
},{
name: 'Year 20098',
data: [973]
}]
Example: http://jsfiddle.net/y9wzggc4/

How to implement Highcharts column-drilldown chart in Rails application?

I'm trying to implement a Highcharts Column-Drilldown Chart in my Rails application using lazy_high_charts. I want to display data that's being pulled from my database and stored in four arrays (areas, areaScores, departments, and deptScores). I'm having trouble converting the JS from the example (JSFiddle) listed on the highchart site into ruby. I have not been able to find any resources on creating a column-drilldown chart in ruby. Any help on how to integrate the drilldown chart into my ruby application would be highly appreciated.
I have included the sample JavaScript shown on the Highcharts demo page and my controller method that populates the four arrays with data and builds the highchart.
Highcharts Column-Drilldown Chart Example (Javascript)
$(function () {
Highcharts.data({
csv: document.getElementById('tsv').innerHTML,
itemDelimiter: '\t',
parsed: function (columns) {
var brands = {},
brandsData = [],
versions = {},
drilldownSeries = [];
// Parse percentage strings
columns[1] = $.map(columns[1], function (value) {
if (value.indexOf('%') === value.length - 1) {
value = parseFloat(value);
}
return value;
});
$.each(columns[0], function (i, name) {
var brand,
version;
if (i > 0) {
// Remove special edition notes
name = name.split(' -')[0];
// Split into brand and version
version = name.match(/([0-9]+[\.0-9x]*)/);
if (version) {
version = version[0];
}
brand = name.replace(version, '');
// Create the main data
if (!brands[brand]) {
brands[brand] = columns[1][i];
} else {
brands[brand] += columns[1][i];
}
// Create the version data
if (version !== null) {
if (!versions[brand]) {
versions[brand] = [];
}
versions[brand].push(['v' + version, columns[1][i]]);
}
}
});
$.each(brands, function (name, y) {
brandsData.push({
name: name,
y: y,
drilldown: versions[name] ? name : null
});
});
$.each(versions, function (key, value) {
drilldownSeries.push({
name: key,
id: key,
data: value
});
});
// Create the chart
$('#container').highcharts({
chart: {
type: 'column'
},
title: {
text: 'Browser market shares. November, 2013'
},
subtitle: {
text: 'Click the columns to view versions. Source: netmarketshare.com.'
},
xAxis: {
type: 'category'
},
yAxis: {
title: {
text: 'Total percent market share'
}
},
legend: {
enabled: false
},
plotOptions: {
series: {
borderWidth: 0,
dataLabels: {
enabled: true,
format: '{point.y:.1f}%'
}
}
},
tooltip: {
headerFormat: '<span style="font-size:11px">{series.name}</span><br>',
pointFormat: '<span style="color:{point.color}">{point.name}</span>: <b>{point.y:.2f}%</b> of total<br/>'
},
series: [{
name: 'Brands',
colorByPoint: true,
data: brandsData
}],
drilldown: {
series: drilldownSeries
}
})
}
});
});
My Controller:
def generateOrgBreakdownReport
# First, query the database for the data you need for the report
#jsonanswerBRKD = queryDatabaseForOrgProgressReport()
# Second, process and combine data as needed for the report
#areaBreakdown, #deptBreakdown, #employBreakdown = computeAreaAndDeptPrepareScore(#jsonanswerBRKD)
# Third, you'll need to put the processed data into a format
# Highcharts will understand for the data series it uses
# for the graph.
#THESE ARRAYS HOLD THE NAMES AND SCORES OF AREAS AND DEPARTMENTS
#deptScores, #departments, #areaScores, #areas = cycleThroughProcessedDataAndCreateHighChartsDataSetsBreakdown(#areaBreakdown, #deptBreakdown, #employBreakdown)
# Last, we put the newly made data sets for Highcharts to work its magic.
#DONT KNOW HOW TO IMPLEMENT DRILLDOWN FOR RUBY
#orgBreakdown = LazyHighCharts::HighChart.new('column') do |f|
f.chart( type: 'column' )
f.xAxis(
title: { text: "Areas" },
type: 'category'
)
f.yAxis(
title: { text: "Preparedness Score (%)"},
)
f.series(
name: "Department Score",
colorByPoint: true,
data: #deptScores
)
f.series(
name: "Area Score",
data: #areaScores
)
f.title(
text: "Organizational Breakdown"
)
f.options[:xAxis][:categories] = #areas
f.drilldown({:series=>{
name:"Dept. Score",
data: #deptScore
}
})
end
end
Thanks,
Matt

I haven't used Lazy Highcharts, but assuming it mirrors the JSON from the JavaScript API you need to add the sub-series by name, e.g.
f.series(
name: "Department Score",
colorByPoint: true,
data: #deptScores,
drilldown: "subdept" #add this
)
Then you'll need to add drilldown data, and if Lazy Highcharts supports it, it might look something like this:
f.drilldown(
series: {
id: "subdept",
data: [
["One", 1],
["Two", 2],
["Three", 3]
]
}
)
See this basic drilldown fiddle to see how the resulting Javascript should look.

To get drilldown to work in Rails you have to make sure you include the drilldown module in your JavaScript manifest file (application.js).
I also had to download the file as it was not my highcharts module catalogue. You can find the file here: http://code.highcharts.com/modules/drilldown.js
Add this to application.js:
//= require highcharts/modules/drilldown
Outside of Rails you can include the drilldown module like this:
<script src="http://code.highcharts.com/modules/drilldown.js"></script>

convert one dimension array into two dimension array

I want to implement plugin chart into my code, the chart code is like
chart = new Highcharts.Chart({
},
series: [{
type: 'pie',
name: 'criterin',
data: [
['Firefox', 45.0],
['IE', 26.8],
{
name: 'Chrome',
y: 12.8,
sliced: true,
selected: true
},
['Safari', 8.5],
['Opera', 6.2],
['Others', 0.7]
]
}]
});
I have array that I got from ajax function which contains the information that I want to replace into the chart.
for example, I alert sample array and result like:
post work,0.64,quality,0.35
How can I use my array to integrate with chart code.

So, if I'm understanding you correctly, you have an array that looks like this
['post work',0.64,'quality',0.35]
And you want it to look like this:
[
['post work', 0.64],
['quality', 0.35]
]
Something like this should work
function array1Dto2D(sourceArray) {
var array2D = [];
for (var i=0; i < sourceArray.length - 1; i+=2) {
var pair = [sourceArray[i], sourceArray[i+1]];
array2D.push(pair);
}
return array2D;
}
and be used something like this (Note I don't use highcharts, but I don't think the way you had it in your question was right, with the empty object as a first argument):
chart = new Highcharts.Chart({
series: [{
type: 'pie',
name: 'criterin',
data: array1Dto2D(my1dsourcedata)
}]
});