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  • Author
    Alain Galdemas & Zied Zaim @NGI Maghreb
  • Date
    November 19, 2012
  • Version
    Applicable to ZK 5.0 and later

Contents

Introduction

The best way to graphically represent data is to draw charts. ZK supports a few type of charts based on JFreeChart library. In this small talk, I will introduce a new component - ZHighCharts, based on Highcharts JS library which offers an easy way for users to create modern and intuitive charts.

Demo

Here are some selected demos:

Multiple-axis.png

Spline w symbols.png

More demos are available here: http://zhighcharts.appspot.com/demo.zul

Component Usage

To create a chart, four steps are required:

  1. Add zhighcharts-0.2.0.jar to the directory WEB-INF/lib
  2. Add the ZHighCharts component to the ZUL file
  3. <zhighcharts id="chartComp" />
  4. Initialize and configure the component in the controller
  5. ZHighCharts chartComp;
    
    chartComp = (ZHighCharts) getFellow("chartComp");
    chartComp.setTitle("My first ZHighChart chart");
    chartComp.setType("line");
  6. Add some data
  7. SimpleExtXYModel dataChartModel = new SimpleExtXYModel();
    
    chartComp.setModel(dataChartModel);
    
    dataChartModel.addValue("Chart 1", 0, 7);
    dataChartModel.addValue("Chart 1", 1, 4);
    dataChartModel.addValue("Chart 1", 2, 9);
    dataChartModel.addValue("Chart 1", 3, 5);

    License

    The ZHighCharts project is hosted on github here. To use ZHighCharts, a valid Highcharts license is required. Note that the use of Highcharts is free for non-profit organizations, students, universities, public schools and non-commercial personal websites. To use ZHighCharts for commercial services, a valid Highcharts license is required.

    More information are available here: Highcharts JS Licence.

    Summary

    Highcharts JS is considered as one of the best charting libraries written in JavaScript. The ZHighCharts project aims to provide a pure Java approach to use Highcharts JS in ZK projects.


    Comments



    Copyright © NGI Maghreb. This article is licensed under GNU Free Documentation License.
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