Funnel series

This tutorial is about configuring various aspects of a funnel series appearance.

Slices

Slice colors

Slice colors are important. They identify a slice and connect it to its legend item visually.

There are a few ways to control how colors are assigned to slices.

Auto-assigned colors

A series will automatically assign a unique color to each slice from its own color set.

Should we want to, we can override the whole list of colors by either setting it directly on series color set, creating a quick theme, or a reusable full theme, e.g.:

series.get("colors").set("colors", [
  am5.color(0x095256),
  am5.color(0x087f8c),
  am5.color(0x5aaa95),
  am5.color(0x86a873),
  am5.color(0xbb9f06)
]);

series.get("colors").set("colors", [
  am5.color(0x095256),
  am5.color(0x087f8c),
  am5.color(0x5aaa95),
  am5.color(0x86a873),
  am5.color(0xbb9f06)
]);

MORE INFO A "Color sets" section of our color tutorial has more details and code samples.

Manual slice colors

We can also specify color for each slice through data and template fields.

For more information on how to do it, refer to "Template fields" tutorial.

Configuring slices

Configuration of a slice is done via its template, which is accessible via series template list: series.slices.template.

We can set any setting via template:

series.slices.template.setAll({
  fillOpacity: 0.5,
  stroke: am5.color(0xffffff),
  strokeWidth: 2
});

series.slices.template.setAll({
  fillOpacity: 0.5,
  stroke: am5.color(0xffffff),
  strokeWidth: 2
});

NOTE Setting a value on a template will also update existing slices created using it.

Slice bottom width

Funnel slices are rectangles by default.

We can turn them into trapezoids using series setting bottomRatio.

It's a numeric value from 0 (zero) to 1 (one).

It indicates how bottom of the slice should be reduced in width in comparison to the width of the next slice.

0 (zero) means that there will be no reduction, so slice will remain a rectangle with both bottom and top equal in width.

1 (one) means the bottom will be equal in width with the next slice.

It can also be any intermediate value.

let series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    bottomRatio: 0
  })
);

var series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    bottomRatio: 0
  })
);

Slice links

Slice links are trapezoids that connect two adjacent slices.

Like anything else, we can configure them via their template on series.links.template.

Link color and opacity

Links are colored the same color as the linked slice. We can override the colors (and other settings) via link template:

series.links.template.setAll({
  fill: am5.color(0x000000),
  fillOpacity: 0.2
});

series.links.template.setAll({
  fill: am5.color(0x000000),
  fillOpacity: 0.2
});

Link height

Link height can be controlled using its height setting. Set it to a bigger number to make them more prominent, or to a zero to completely disable links.

series.links.template.setAll({
  height: 0
});

series.links.template.setAll({
  height: 0
});

Labels

Configuring labels

Series label configuration is done via its template, accessible via series property labels.template.

series.labels.template.setAll({
  fontSize: 20,
  fill: am5.color(0x550000),
  text: "{category}"
});

series.labels.template.setAll({
  fontSize: 20,
  fill: am5.color(0x550000),
  text: "{category}"
});

Funnel series uses Label for its labels. Check out its class reference for all the possible settings.

Label content

Slice labels are pre-set to display name of the category and its percent value.

We can modify contents of the tooltips using text setting on a series label template:

series.labels.template.set("text", "{category}: [bold]{valuePercentTotal.formatNumber('0.00')}%[/] ({value})");

series.labels.template.set("text", "{category}: [bold]{valuePercentTotal.formatNumber('0.00')}%[/] ({value})");

Contents of the tooltip can include data placeholders (codes in curly brackets that will be replaced by actual data) and in-line formatting blocks (formatting instructions enclosed in square brackets).

Disabling labels

To disable series labels, we can set forceHidden setting to true in their template:

series.labels.template.set("forceHidden", true);

series.labels.template.set("forceHidden", true);

Alignment

Funnel series labels can either be aligned into a column (or row for horizontal series).

This can be disabled using series setting alignLabels (default: true). When alignment is disabled, the labels will position themselves directly over the slice.

let series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    valueField: "applicants",
    orientation: "vertical",
    alignLabels: false
  })
);

var series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    valueField: "applicants",
    orientation: "vertical",
    alignLabels: false
  })
);

NOTE Disabling alignLabels will also hide slice ticks automatically.

Ticks

Configuring ticks

Series tick configuration is done via its template, accessible via series property ticks.template.

series.ticks.template.setAll({
  stroke: am5.color(0x550000),
  strokeWidth: 2
});

series.ticks.template.setAll({
  stroke: am5.color(0x550000),
  strokeWidth: 2
});

Series uses Tick for its labels. Check out its class reference for all the possible settings.

Disabling ticks

To disable series ticks, we can set forceHidden setting to true in their template:

series.ticks.template.set("forceHidden", true);

series.ticks.template.set("forceHidden", true);

Tick location

The tick will point to the slice edge on the label side, by default.

That can be changed using tick template setting location.

It's a numeric value from 0 (zero) to 1 (one) indicating relative position within the slice.

series.ticks.template.setAll({
  location: 0.5
});

series.ticks.template.setAll({
  location: 0.5
});

The above will make tick point to the middle of the slice.

Tooltips

To enable slice tooltips, all we need to do is to set tooltipText on slice's template:

series.slices.template.set("tooltipText", "{category}: [bold]{valuePercentTotal.formatNumber('0.00')}%[/] ({value})");

series.slices.template.set("tooltipText", "{category}: [bold]{valuePercentTotal.formatNumber('0.00')}%[/] ({value})");

Contents of the tooltip can include data placeholders (codes in curly brackets that will be replaced by actual data) and in-line formatting blocks (formatting instructions enclosed in square brackets).

Series layout

Orientation

Funnel series can either be vertical or horizontal.

It must set via orientation property with possible values "vertical" and "horizontal".

let series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "horizontal"
  })
);

var series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "horizontal"
  })
);

Pading

Funnel series has 10 pixels on padding on all sides by default, so there's little bit space around it.

We can disable it (or increase) using series paddingTop, paddingRight, paddingBottom, and paddingLeft settings:

let series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    paddingLeft: 0,
    paddingRight: 0,
    paddingTop: 0,
    paddingBottom: 0
  })
);

var series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    paddingLeft: 0,
    paddingRight: 0,
    paddingTop: 0,
    paddingBottom: 0
  })
);

Start/end locations

Normally, series starts and ends at the edge of its available space.

We can use its startLocation and endLocation to set where series starts and ends in comparison to the available space.

The values can be from 0 (zero) to 1 (one), with zero meaning start of the series area, and 1 - the end.

let series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    startLocation: 0.2,
    endLocation: 0.8
  })
);

var series = chart.series.push(
  am5percent.FunnelSeries.new(root, {
    name: "Series",
    categoryField: "stage",
    valueField: "applicants",
    orientation: "vertical",
    startLocation: 0.2,
    endLocation: 0.8
  })
);

The above will start and end series 20% of the whole width/height from the edges of the series area.

Example

See the Pen Funnel chart by amCharts team (@amcharts) on CodePen.

Binding settings to data

It's possible to bind settings of a series slice, label, and tick templates to values in data.

For more information on how to do it, refer to "Template fields" tutorial.