Introduction

QlikView has always had a great selection of chart objects to allow you to display data. There are eleven graphical chart types with various display options, and two table charts.

There has always been demand for new chart types but many of which would only be used in specific circumstances and QlikView charts have more general application. So, with Version 10, QlikView introduced a new way of displaying data—Extension Objects, which allows developers to create their own chart types to display QlikView data in whatever way they want.

An extension object allows us to create a table, chart, other data visualization, or other extension to the AJAX user interface, using HTML and JavaScript. This allows us to consume a third-party Flash or Silverlight object. We can also consume other JavaScript libraries, such as D3 or Raphaël. In fact, since Version 11 of QlikView, the commonly used jQuery library is available to developers without having to add it separately.

Our chart can use data...