Creating Translations

Type tutorial

amCharts 4 replies on locale files for localization of the charts. Locales are responsible for both translations of prompts and setting date/number formats. This tutorial will explain how you can make changes to existing translations, and create the new ones. If you ended up here, you probably already know how locales are used. On the […]

Disabling toggling of items in Legend

Type tutorial

Normally a Legend will allow toggling of its items. This will also toggle related items, like chart’s Series. This tutorial will show how to disable this default functionality. To disable toggling of items, all we have to do is to make those items non-clickable. Legend’s items are stored in its itemContainers template list. So all we […]

Handling repeating categories on Category Axis

Type tutorial

Sometimes you will end up with an XY chart that has non-unique categories in its data. This tutorial will explain how to deal with such situation. Base chart We’re going to start off with a very basic XY chart that has a category axis, and some matching categories in its data: [{ “category”: “1st”, “value”: […]

Pre-zooming an axis

Type tutorial

This tutorial will explain how you can set up your charts to initialize pre-zoomed. Prerequisites This tutorial relies on event handlers. We recommend reading up on how events work in amCharts 4 in “Event Listeners” article. Reference chart Let’s start off with a simple date-based chart: Setting up pre-zoom There currently are no properties on […]

Wrapping and truncating axis labels

Type tutorial

This tutorial will explain how you can deal with very long axis labels, by wrapping and/or truncating them. Prerequisites If you haven’t done that already, we suggest you take a look at the “Positioning Axis Elements” article, which explains the principles about configuring Axis elements, including the concept of “axis renderer”. Moving forward we will […]

Adding chart titles and bottom text

Type tutorial

This short tutorial shows how you can add arbitrary text labels to the top or bottom of the chart, that will automatically adjust the size of the chart itself. Adding chart titles For chart titles, every chart instance has a titles property which holds a list template of Label objects. To create new title object, we just […]

Chart Legend in an External Container

Type tutorial

This tutorial will show you how you can easily move your chart legend outside main container into a totally separate one. NOTE We’re going to be using Pie chart as an example in this tutorial. However, this applies to any other chart type that uses Legend. Base chart Let’s start with a basic Pie chart […]

Tracking Cursor’s position via API

Type tutorial

This tutorial will explain how you can track Cursor’s position within plot area, as well as map it to real values. Prerequisites If you haven’t done so already, we strongly suggest you take a look at the “Chart Cursor” article, which walks through every step and aspect of using this chart helper. We will also […]

Placing labels anywhere on the chart

Type tutorial

This tutorial shows how you can place arbitrary labels anywhere on the chart. Adding a label A label is represented by object of type Label. A chart is an instance of Container. Therefore, to create a child element (a label) in chart (container) we will use chart’s createChild(type) method: let label = chart.createChild(am4core.Label); label.text = “Hello […]