Automatic labels over map polygons

Type tutorial

During the course of this article we’re going to learn how to automatically place labels over map polygons, as well as make them positioned just the right way. Base map As a polygon of our development, let’s use a map of the United States in an Albers USA projection. Series for polygons Setting up Polygon […]

Totals on column stacks

Type tutorial

Building column stacks is easy: just set stackable = true on each column series. This tutorial will show how we can display automatic total value of the whole stack on top of it. Base chart Here’s a base chart we’re going to start with. It’s already got several ColumnSeries stacked. It also has “label bullets” […]

Plugin: Regression trend lines

Type tutorial

This tutorial will explain how you can use Regression plugin (available since version 4.2.2) to display automatically-calculated regression trend lines. NOTE Regression is a plugin. For information about using plugins, refer to this article. Purpose Trend lines, as their name suggests, help identify generic trends among seemingly randomly dispersed values. Take this chart for example: […]

Overlaid column series

Type tutorial

This tutorial will show how you can leverage a number of settings on Series and Axes to create offset/overlaid columns effect. The task In the course of this tutorial we’re going to turn this: Into this: Here’s a live version of the source chart: Patient’s ready. Let’s get started. Un-clustering columns By default, all Column […]

Toggling series via API

Type tutorial

Need to toggle series on and off via code? This short tutorial will show how. Hiding or showing Series in amCharts is a Sprite object. And just like any Sprite object, it can be toggled off by calling its hide() method, and shown back on by show(). That is it. You just call the respective […]

Toggling multiple series with a single legend item

Type tutorial

This tutorial will show how you can toggle several Series at once, with a single Legend item. Base chart Let’s start with a basic chart with three Line series. Each Series has its own entry in the Legend. Click any of those will toggle its corresponding Series on and off. Suppose, we need to have […]

Creating Pie Series Animations

Type tutorial

By default (if you are using “animated” theme), Pie series will fade in when chart initializes. Let’s explore how we can fancy-up those animations. Base chart Let’s take this chart as a base: As you can see, it just fades in. Boooooring. Let’s fix that. The concepts But, before we jump to unicorns and rainbows, […]

Taming Candlestick Series

Type tutorial

Candlesticks are a good way to depict data dynamics using variety of metrics. Instead of single value – used on most series – candlesticks use four: open, high, low, and close. This tutorial will explain how to set up and configure Candlestick series. Adding and setting up Adding a CandlestickSeries is no different than adding […]

Individual legend item for each column

Type tutorial

Normally on an XY Chart, Legend creates a single item for each Series. This brief tutorial will show how you can create custom legend which will show an item for each individual column in a single Column series. Base chart Let’s take this chart as a base. It uses an adapter to color each column […]

Hiding Small Pie Slices

Type tutorial

Pie chart sizes its slices proportionally, based on the relative values. Sometimes that means that we end up with a chart that has a bunch of small-value slices that are barely visible, but clutter up the chart. Here’s one chart like that: Ewww. Let’s see what we can do about it. Hiding labels Let’s hide […]