Line with Changing Color
Alternating line color via data
amCharts 5 brings a powerful concept – template fields, which allows binding any setting of a Line series segment to values in data. Once a setting, say a color, is overridden via data, the Line series remembers it and continues coloring subsequent segments in the same color.
Related tutorials
Demo source
<!-- Styles -->
<style>
#chartdiv {
width: 100%;
height: 500px;
}
</style>
<!-- Resources -->
<script src="https://cdn.amcharts.com/lib/5/index.js"></script>
<script src="https://cdn.amcharts.com/lib/5/xy.js"></script>
<script src="https://cdn.amcharts.com/lib/5/themes/Animated.js"></script>
<!-- Chart code -->
<script>
am5.ready(function() {
// Create root element
// https://www.amcharts.com/docs/v5/getting-started/#Root_element
var root = am5.Root.new("chartdiv");
// Set themes
// https://www.amcharts.com/docs/v5/concepts/themes/
root.setThemes([
am5themes_Animated.new(root)
]);
// Create chart
// https://www.amcharts.com/docs/v5/charts/xy-chart/
var chart = root.container.children.push(am5xy.XYChart.new(root, {
panX: true,
panY: true,
wheelX: "panX",
wheelY: "zoomX",
layout: root.verticalLayout,
pinchZoomX: true,
paddingLeft: 0
}));
// Add cursor
// https://www.amcharts.com/docs/v5/charts/xy-chart/cursor/
var cursor = chart.set("cursor", am5xy.XYCursor.new(root, {
behavior: "none"
}));
cursor.lineY.set("visible", false);
var colorSet = am5.ColorSet.new(root, {});
// The data
var data = [
{
year: "2014",
value: 23.5,
strokeSettings: {
stroke: colorSet.getIndex(0)
},
fillSettings: {
fill: colorSet.getIndex(0),
},
bulletSettings: {
fill: colorSet.getIndex(0)
}
},
{
year: "2015",
value: 26,
bulletSettings: {
fill: colorSet.getIndex(0)
}
},
{
year: "2016",
value: 30,
bulletSettings: {
fill: colorSet.getIndex(0)
}
},
{
year: "2017",
value: 20,
bulletSettings: {
fill: colorSet.getIndex(0)
}
},
{
year: "2018",
value: 30,
strokeSettings: {
stroke: colorSet.getIndex(3)
},
fillSettings: {
fill: colorSet.getIndex(3),
},
bulletSettings: {
fill: colorSet.getIndex(3)
}
},
{
year: "2019",
value: 30,
bulletSettings: {
fill: colorSet.getIndex(3)
}
},
{
year: "2020",
value: 31,
bulletSettings: {
fill: colorSet.getIndex(3)
}
},
{
year: "2021",
value: 34,
strokeSettings: {
stroke: colorSet.getIndex(6)
},
fillSettings: {
fill: colorSet.getIndex(6),
},
bulletSettings: {
fill: colorSet.getIndex(6)
}
},
{
year: "2022",
value: 33,
bulletSettings: {
fill: colorSet.getIndex(6)
}
},
{
year: "2023",
value: 34,
bulletSettings: {
fill: colorSet.getIndex(6)
}
},
{
year: "2024",
value: 36,
bulletSettings: {
fill: colorSet.getIndex(6)
}
}
];
// Create axes
// https://www.amcharts.com/docs/v5/charts/xy-chart/axes/
var xRenderer = am5xy.AxisRendererX.new(root, {
minorGridEnabled: true,
minGridDistance: 80
});
xRenderer.grid.template.set("location", 0.5);
xRenderer.labels.template.setAll({
location: 0.5,
multiLocation: 0.5
});
var xAxis = chart.xAxes.push(am5xy.CategoryAxis.new(root, {
categoryField: "year",
renderer: xRenderer,
tooltip: am5.Tooltip.new(root, {})
}));
xAxis.data.setAll(data);
var yAxis = chart.yAxes.push(am5xy.ValueAxis.new(root, {
maxPrecision: 0,
renderer: am5xy.AxisRendererY.new(root, {})
}));
var series = chart.series.push(am5xy.LineSeries.new(root, {
xAxis: xAxis,
yAxis: yAxis,
valueYField: "value",
categoryXField: "year",
tooltip: am5.Tooltip.new(root, {
labelText: "{valueY}",
dy: -5
})
}));
series.strokes.template.setAll({
templateField: "strokeSettings",
strokeWidth: 2
});
series.fills.template.setAll({
visible: true,
fillOpacity: 0.5,
templateField: "fillSettings"
});
series.bullets.push(function () {
return am5.Bullet.new(root, {
sprite: am5.Circle.new(root, {
templateField: "bulletSettings",
radius: 5
})
});
});
series.data.setAll(data);
series.appear(1000);
// Add scrollbar
// https://www.amcharts.com/docs/v5/charts/xy-chart/scrollbars/
chart.set("scrollbarX", am5.Scrollbar.new(root, {
orientation: "horizontal",
marginBottom: 20
}));
// Make stuff animate on load
// https://www.amcharts.com/docs/v5/concepts/animations/
chart.appear(1000, 100);
}); // end am5.ready()
</script>
<!-- HTML -->
<div id="chartdiv"></div>