Creating a stacked column from JSON

[David]

Wondering if anyone has an example like this.
https://jsfiddle.net/0crma6pv/
But where I can reference each column and give it a name etc…
So in the fiddle is has this:
ar chart = new CanvasJS.Chart(“chartContainer”, {
title: {
text: “stackedBar using JSON data”
},
data: [{
type: “stackedColumn”,
dataPoints: dataPoints1
},
{
type: “stackedColumn”,
dataPoints: dataPoints2
},

But I want to do something more like this

ar chart = new CanvasJS.Chart(“chartContainer”, {
title: {
text: “stackedBar using JSON data”
},
data: dataPoints

So I can then define each stacked column’s name field etc. in the JSON.

The json sample I have is this, where there is a name and each date is the column, and each date is a column.
{“john.smith”:{“2018-07-06″:1,”2018-06-27″:1,”2018-06-20″:1,”2018-07-03″:1,”2018-06-29″:4},”peter.johnson”:{“2018-06-27″:18,”2018-06-21″:9,”2018-06-29″:23,”2018-06-22″:11,”2018-06-19″:18,”2018-06-14″:13,”2018-07-06″:24,”2018-06-26″:5,”2018-07-02″:14,”2018-06-13″:16,”2018-06-25″:17,”2018-06-12″:12,”2018-07-09″:9,”2018-06-28″:18,”2018-07-05″:15,”2018-06-20″:14,”2018-06-18″:12,”2018-07-04″:21,”2018-06-15″:4,”2018-07-03″:17},”david.smith”:{“2018-06-12″:1,”2018-07-09″:15,”2018-06-28″:15,”2018-06-20″:1,”2018-07-05″:6,”2018-06-18″:10,”2018-07-04″:11,”2018-07-03″:10,”2018-06-15″:8,”2018-06-27″:1,”2018-06-21″:12,”2018-06-29″:2,”2018-06-22″:21,”2018-06-19″:10,”2018-06-14″:8,”2018-07-06″:33,”2018-06-26″:9,”2018-07-02″:11,”2018-06-25″:8,”2018-06-13″:7},”alex.mander”:{“2018-06-21″:6,”2018-06-29″:9,”2018-06-22″:10,”2018-06-12″:3,”2018-07-04″:2,”2018-06-20″:2,”2018-06-19″:8,”2018-06-25″:6,”2018-07-02″:2},”shannon.peters”:{“2018-07-09″:1},”lc advice”:{“2018-06-29″:3,”2018-06-26″:1},”peter.harry”:{“2018-06-12″:5,”2018-06-15″:3,”2018-07-09″:1,”2018-06-14″:5,”2018-07-05″:3,”2018-07-06″:4},”amy.pete”:{“2018-07-03″:12,”2018-06-15″:10,”2018-06-20″:13,”2018-07-05″:9,”2018-07-07″:1,”2018-06-18″:7,”2018-07-04″:13,”2018-06-12″:10,”2018-07-09″:5,”2018-06-28″:10,”2018-06-26″:11,”2018-07-02″:9,”2018-06-25″:6,”2018-06-13″:12,”2018-06-14″:12,”2018-06-19″:8,”2018-07-06″:23,”2018-06-29″:11,”2018-06-22″:14,”2018-06-27″:7,”2018-06-21”:14}}

[David]

I managed to figure this out for anyone wanting assistance with how to do this.
The end goal was to create a stacked chart dynamically with dynamically created sections.
This is a potentially much more powerful stacked chart than the one I linked as it allows you to customise and add a ‘name’ to each of the stacks.

I’m also converting an international date format date (ie. 2018-09-23) to epoch for canvasJS to use, see function at the end.

var chart = new CanvasJS.Chart(“chartContainer”, {
title: {
text: “stackedBar using JSOdata”
},
data: dataPointsR
});
$.getJSON(“https://web address of json file here”, function(data) {
$.each(data, function(key, val) { // key here is the name of the person as per my first post JSON.
let dataPointR = [];
$.each(val, function(key2, val2) {
var DateEpoch = ConvertDate(key2);
dataPointR.push({“x”: DateEpoch, “y”: val2}) // DateEpoch is 14348846000 and val2 is a number like 12
})
dataPointsR.push({“toolTipContent”:”{label}<br/>{name}, {m} {y}“,”showInLegend”:”true”,”type”:”stackedColumn”,”xValueType”:”dateTime”,”name”: key ,”dataPoints”: dataPointR})
});
chart.render();

});

function ConvertDate(dateToConvert) {
var parts = dateToConvert.match(/(\d{4})\-(\d{2})\-(\d{2})/);
var returnDate = Date.UTC(+parts[1], parts[2], +parts[3]);//, +parts[4], +parts[5]);
return returnDate;
}

[Priyanka M S]

David,

Glad that you figured it out.

__
Priyanka M S
Team CanvasJS

[David]

Thanks!

Working fiddle is here:
https://jsfiddle.net/untg99/cumyjod5/