I am working on a Angular 5 application where I am asked to use highcharts and display some information on pie charts and bar charts. The data that I get from the web api call is in json format and looks like:
[
{
"fruit": "Orange",
count: 10
},
{
"fruit": "Strawberry",
count: 20
}
]
The following is the sample code of my pie chart:
this.chart = new Chart({
chart: {
type: 'pie'
},
title: {
text: 'Available Fruits'
},
credits: {
enabled: false
},
series : [{
name: 'Line 1',
data: [10, 20, 30, 40]
}]
});
So this data is dynamic and I want to pass this data as input to the pie chart.I also want a similar one to be displayed as a bar chart. The charts should be rendered once the web api calls return me this data. Could you please let me know how I could implement this functionality.
Note: the data value in the chart object is just temporary value and I need this value to be the json data returned from the web api.
Related
I'm trying to populate a map of the U.S. in HighMaps with data from an html table. The map is showing but the data point is not. It's a latitude/longitude point. The documentation is sparse, so I'm not sure what I'm doing wrong. Here's a JSFiddle: https://jsfiddle.net/sfjeld/1wjm04fc/6/
Highcharts.mapChart('container', {
chart: {
map: 'countries/us/custom/us-all-territories'
},
series: [{
name: 'Basemap',
dataLabels: {
enabled: true,
format: '{point.name}'
}
},
{
// Specify points using lat/lon
type: 'mappoint',
data: {
table: 'pvsoiling-table',
startRow: 1,
startColumn: 1,
endColumn: 2
},
name: 'PV',
marker: {
fillColor: 'white',
lineColor: 'black',
lineWidth: 2,
radius: 10
},
color: Highcharts.getOptions().colors[1]
}
]
});
thanks,
Shauna
You can make the following changes to your code:
At the start of your <script> section, load your HTML table data into a JavaScript array:
var mapData = [];
Highcharts.data({
table: document.getElementById('pvsoiling-table'),
startColumn: 1,
endColumn: 2,
firstRowAsNames: true,
complete: function (options) {
options.series[0].data.forEach(function (p) {
mapData.push({
lat: p[0],
lon: p[1]
});
});
//console.log(mapData);
}
});
We will refer to this mapData array later on. Here is what it contains:
[
{ "lat": 33.3, "lon": -111.67 }
]
Make changes to the series section in your Highcharts.mapChart.
series: [{
name: 'Basemap',
nullColor: '#e0f9e3',
dataLabels: {
enabled: true,
format: '{point.name}'
}},
{
// Specify points using lat/lon
data: mapData,
type: 'mappoint',
name: 'PV',
marker: {
fillColor: 'white',
lineColor: 'black',
lineWidth: 1,
radius: 3
},
color: Highcharts.getOptions().colors[1]
}
]
The key part to note is the data: mapData option. The JavaScript mapData variable is the exact array that we need to represent a set of points on the map. In our case the array only contains one point - but that's because there is only one relevant row of data in the HTML table.
My map ends up looking like this:
It looks like the marker is in or near Phoenix, AZ.
Final notes:
(a) I also adjusted the marker to have lineWidth: 1 and radius: 3 (a bit smaller).
(b) I added a document ready function around everything, to ensure the DataTable is loaded before you try to read its data.
(c) There may be a more elegant way to do this, but I followed the approach in this demo. The demo actually shows how to join 2 different sets of data - not what you need. But it does show a good approach for extracting the HTML data so it can be used in the map.
Using the the Highcharts.data({...}) approach lets you access any HTML table. But since you are using DataTables, you can choose to do the following, instead. It uses the DataTables API to access each row of data:
var mapData = [];
$('#pvsoiling-table').DataTable({
"initComplete": function(settings, json) {
var api = this.api();
api.rows().data().each(function (p) {
mapData.push({ lat: Number(p[1]), lon: Number(p[2]) });
});
// your Highcharts.mapChart() logic, in a function:
buildChart();
}
});
I am trying to plot a chart with only two data points from a CSV file that holds many more data points with a datetime x-Axis.
In the end the user should be able to compare two years of his choice out of the whole dataset.
From the API documentation I know that I can pick a range of data points from a CSV with startRow and endRow:
https://api.highcharts.com/highcharts/data.startRow
But that would only plot one specific point, as you can see in my fiddle.
Is there any other way to programmatically show specific points?
Highcharts.chart('container', {
chart: {
type: 'column',
polar: false,
},
title: {
text: ''
},
subtitle: {
text: ''
},
data: {
csv: document.getElementById('csv').innerHTML,
startRow: 3,
endRow: 4,
googleSpreadsheetKey: false,
googleSpreadsheetWorksheet: false
},
series: [{
name: 'val'
}],
yAxis: [{
title: {
text: ''
},
opposite: true,
labels: {
align: 'right',
reserveSpace: true
}
}],
xAxis: [{
type: 'datetime',
opposite: false
}],
pane: {
background: []
},
responsive: {
rules: []
},
legend: {
title: ''
},
plotOptions: {
series: {
animation: false
}
}
});
Edit:
I forgot to mention, that i only want to load the CSV once. After that the user should be able to select/update data points without reloading the data.
For showing ranges of values dynamically, I used Axis min and max settings like this:
$(this).highcharts().update({
xAxis:{
min: Date.UTC(selectedStart,0,0),
max: Date.UTC(selectedEnd,11,31)
}
});
The whole dataset is loaded once and the chart axis gets updated on user interaction.
Now I am looking for something similar just not for a range but a comparison of two values off of the whole dataset.
Highcharts data module provides a function called parsed that allows you to modify the fetched data programmatically before it's applied to the chart.
From Highcharts API (https://api.highcharts.com/highcharts/data.parsed):
parsed: function
A callback function to access the parsed columns, the
two-dimentional input data array directly, before they are
interpreted into series data and categories. Return false to stop
completion, or call this.complete() to continue async.
Live demo: http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/data/parsed/
Show data using highchart bar graph where categories are dynamic date which comes with data.
My code to show data on graph:
function highchartDate(Male,Female) {
Highcharts.chart('container', {
chart: {
type: 'column'
},
xAxis: {
type: 'datetime',
tickInterval: 24 * 3600 * 1000, // one day
startOnTick: true,
endOnTick: true,
dateTimeLabelFormats: {
day: '%e of %b'
}
},
tooltip: {
shared: true
},
series: [{
name: 'Day Shift',
data: Male
}, {
name: 'Night Shift',
data: Female
}]
});
};
where Male and Female are the array of arrays like
Male = [[1508803200000, 41][1509235200000, 44][1509408000000, 44]]
Female =[[1508803200000, 41][1509235200000, 44][1509408000000, 44]]
when i run this code on fiddle it works fine but not in project I noticed the reason but don't get the way to make it worked in code.
Can any one help me in this getting the data displayed on graph properly.
this is the Link where you get the code which run fine if i put the value in data seperated with commas like [[1508803200000, 41],[1509235200000, 44],[1509408000000, 44]] .this works fine : https://jsfiddle.net/Pookool/k1qua683/1/
#Kamil Kulig can you help me in this or any one else
I made a barchart with dates. Currently, to remove the dates, you must click on the dates in the legend. I wish delete multiple dates at once.
Let's take an example. My dates range from 1960 to 2015. If I would have on my chart the dates from 2000 to 2005, so I would like that if you click on 1960 and 1999, then all the dates between are deleted / hidden. It goes faster when many dates.
How to do ?
Here is my code :
$(function () {
$('#container').highcharts({
chart: {
type: 'column'
},
colors:[
'#7cb5ec',
'#434348',
'#90ed7d',
'#f7a35c',
'#8085e9',
'#f15c80',
'#e4d354',
'#2b908f',
'#f45b5b',
'#91e8e1',
'#DA70D6',
'#1E90FF',
'#E0F000'
],
legend:{
itemStyle:{
fontSize:'10px',
font:'10pt',
color:'#000000'
}
},
title:{
style:{
fontSize:'0px'
}
},
subtitle:{
style:{
fontSize:'0px'
}
},
xAxis: {
categories: [
'',
],
},
yAxis: {
min: 15,
title: {
text: 'Number',
style:{
fontSize:'0px'
}
}
},
tooltip: {
shared: false,
useHTML: true
},
plotOptions: {
column: {
pointPadding: 0.2,
borderWidth: 0
}
},
series: [{
name: '2004',
data: [49.9],
},
{
name: '2005',
data: [83.6]
},
{
name: '2006',
data: [48.9]
},
{
name: '2007',
data: [69.1]
},
{
name: '2008',
data: [83.6]
},
{
name: '2009',
data: [40.9]
},
{
name: '2010',
data: [69.9]
},
{
name: '2011',
data: [83]
},
{
name: '2012',
data: [28.9]
},
{
name: '2013',
data: [40.9]
},
{
name: '2014',
data: [81.6]
},
{
name: '2015',
data: [24.9]
},
{
name: '2016',
data: [46.4]
}]
});
});
Thanks
Rather than having each year as its own series, I would recommend that you place the years as the values in your x-axis (as categories) and then use Highcharts' native zoom function to allow users to select a certain date range.
I've updated your fiddle with some changes, which I explain below: https://jsfiddle.net/brightmatrix/hr28s27L/
First, in your chart option, I added zoomType: 'x' to allow users to use their mouse to zoom in on specific years. The value x means they can only zoom horizontally (across), which makes for a "cleaner" interaction.
chart: {
type: 'column',
zoomType: 'x'
},
Second, I updated your x-axis with the years as the categories/values:
xAxis: {
categories: ['2004','2005','2006','2007','2008','2009','2010','2011','2012','2013','2014','2015','2016']
},
Lastly, I updated your series to show just the data points, which are then plotted on the y-axis:
series: [{
name: 'data by year',
data: [49.9,83.6,48.9,69.1,83.6,40.9,69.9,83,28.9,40.9,81.6,24.9,46.4]
}]
Here is what happens when a user clicks and drags their mouse cursor:
The shaded box is what they are selecting. Once they release the cursor, the chart will automatically adjust to show only what they chose. A "Reset Zoom" button will appear at the top right to allow them to go back to all years:
Update (July 19, 2016): I did some research on adding a simple slider element to this chart that allows users to choose from a range of years.
An updated version of my fiddle that shows this example chart with sliders can be found here: https://jsfiddle.net/brightmatrix/uvat8u05/.
The code to handle the sliders is shown below. I discovered that explicitly setting the slider values to integers using the parseInt() function solved a couple of problems:
You can correctly compare the slider values to make sure users can't choose an end year that is earlier than the start year.
The setExtremes() function correctly shows a single year when users choose the same start and end year.
All x-axis labels are shown at all times. Before I added parseInt(), some labels disappeared when users chose different values in the sliders.
Please be sure to read the comments I've left in both the HTML and Javascript panes, as I've included additional details on why I made certain code decisions.
// on change handler for both sliders
$('.mySlider').bind('change', function(e) {
e.preventDefault();
var chart = $('#container').highcharts();
// convert the slider values to integers to make sure setExtremes() works as expected
var slider1Val = parseInt($('input[name="slider1"]').val());
var slider2Val = parseInt($('input[name="slider2"]').val());
if (slider2Val < slider1Val) {
// warn the user if they try to choose an end year that is later than the start year
alert("You can't choose an end year that is earlier than your start year.");
} else {
// use setExtremes to set the x-axis ranges based on the values in the sliders
chart.xAxis[0].setExtremes(slider1Val, slider2Val);
}
});
I hope this information is helpful for you.
I am currently wanting to specify all Highcharts chart options via a JSON file. I've seen plenty of examples on how to pull just the data series from JSON and understand that.
Here is an example of some chart options that I would like to convert to JSON
var optionsChart2 = {
chart: {
renderTo: 'container',
type: 'column'
},
title: {
text: 'Year End Rating: Distribution'
},
xAxis: {
categories: [
'Ineffective',
'Inconsistent',
'Proficient',
'Advanced',
'Exceptional'
]
},
yAxis: {
min: 0,
title: {
text: 'Percentage'
}
},
series: [{data: 25,50,65,32,78}]
};
What is the best JSON format for that (for the purpose of pulling in via AJAX and then parsing back into options)?
I've seen the following code for parsing just the data:
$.getJSON('data.json', function(data) {
options.series[0].data = data;
var chart = new Highcharts.Chart(options);
});
How would I then use the new version of the JSON file (as above)?
I'm sorry if this is too vague. I'm relatively new to this and need some help!
Well, it should be valid json, not valid javascript.
So strip the var and start immediately with the opening brace, remove the ; at the end and add double quotes around each property name.
So it looks like this:
{
"chart" : { ...
...
}
Then do the same as your example, just pass the response as is to the HC constructor:
$.getJSON( 'options.json', function( options ) {
new Highcharts.Chart(options);
});