Highcharts more than one series - highcharts

Question

I have a simple json document :
[ {
"x" : "a",
"y" : 2
}, {
"x" : "b",
"y" : 8
}, {
"x" : "c",
"y" : 4
}, {
"x" : "d",
"y" : 15
} ]
I want to visualize it using Highcharts having 4 series. I could success, however, the data appeared only as one series (see the next Figure).
Here is part of the code:
var options = {
.
.
.
series: [{ }]
};
.
.
.
var data = JSON.parse(json);
var seriesData = [];
for (var i = 0; i < data.length; i++) {
seriesData.push([data[i].x, data[i].y]);
options.xAxis.categories.push( data[i].x );
}
options.series[0].data = seriesData;
var chart = new Highcharts.Chart(options);
also updating the series
chart.series[0].update({
type: type,
});
works fine.
using
options.series.push({name: data[i].x, data: [data[i].x, data[i].y]});
creates 4 series but not appropriately visualized and also updating the series
chart.series[0].update({
type: type,
});
doesn't work, therefore, I want to focus in the first mentioned method.
any hints?
EDit: code which partially works for me:
var options = {
chart: {
renderTo: 'container',
type: 'column' //default
},
title: {
text: ''
},
yAxis: {
title: {
enabled: true,
text: 'Count',
style: {
fontWeight: 'normal'
}
}
},
xAxis: {
title: {
enabled: true,
text: '',
style: {
fontWeight: 'normal'
}
},
categories: [],
crosshair: true
} ,
plotOptions: {
pie: {
innerSize: 125,
depth: 80
},
column: {
pointPadding: 0.2,
borderWidth: 0,
grouping: false
}
},
series: [{ }]
};
// Set type
$.each(['column', 'pie'], function (i, type) {
$('#' + type).click(function () {
chart.series[0].update({
type: type
});
});
var data = get the data fom json file**
var seriesData = [];
for (var i = 0; i < data.length; i++) {
seriesData.push([data[i].x, data[i].y]);
options.xAxis.categories.push( data[i].x );
}
options.series[0].data = seriesData;
var chart = new Highcharts.Chart(options);
});
});

Answer 1

You have to decide whether you want to have 4 different series and update all 4 series at once or you want to have one series an then build e.g. legend on your own.
If you want to have 4 series, set grouping to false, set xAxis categories and each point should be mapped to one series with one point - the point.x should have the index of the series.
const series = data.map((point, x) => ({ name: point.x, data: [{ x, y: point.y }]}))
const chart = Highcharts.chart('container', {
chart: {
type: 'column'
},
plotOptions: {
column: {
grouping: false
}
},
xAxis: {
categories: data.map(point => point.x)
},
series: series
});
Then you can update your all 4 series:
chart.series.forEach(series => series.update({
type: series.type === 'column' ? 'scatter' : 'column'
}, false))
chart.redraw()
example: http://jsfiddle.net/pdjqrj5y/