ZK Charts

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DocumentationSmall Talks2009MarchZK Charts
ZK Charts
Author
Bernd Will
Date
March 19, 2009
Version
ZK 3.5 or higher


Chart

Did you know, that ZK offers 29 chart types out of the box ?

You can find the latest source code of the examples at this address: [1] To use a chart component , developers must prepare a ChartModel and a ChartEngine. Developers also set proper chart type, and the threeD (3D) attribute to draw proper chart. The model and type must fit together, or the result is unpredictable. The 3D chart is not supported on all chart type.

available chart types

Type
Model
3D
pie
 PieModel
o
ring
 PieModel
x
bar
 CategoryModel
o
line
 CategoryModel or XYModel
o
area
 CategoryModel or XYModel
x
stacked_bar
CategoryModel
o
stacked_area
CategoryModel or XYModel
x
waterfall
CategoryModel
x
polar
XYModel
x
scatter
XYModel
x
time_series
XYModel
x
polar
XYModel
x
step_area
XYModel
x
step
XYModel
x
histogram
XYModel
x
candlestick
HiLoModel
x
hilow
 HiLoModel
x
XYZ
XYZModel
x
wafer
 wafermodel
x
gantt
 ganttmodel
x
wind
 windmodel
x

typical charting code sequence

<vbox>
     <chart id="mychart" title="Pie Chart Demo" width="500" height="250" type="pie" threeD="true" fgAlpha="128"/>
     <zscript>
         PieModel model = new MyPieModel();
         ... fill the model here ...
         mychart.setModel(model);
     </zscript>
 </vbox>

Charts based on Pie Model

Type
Model
3D
pie
 PieModel
o
ring
 PieModel
x


001 PieChart.png 002 PieChart 3D.png 003 RingChart.png 

	
 <vbox>
 <zscript>
   PieModel piemodel = new SimplePieModel();
   piemodel.setValue("C/C++", new Double(12.5));
   piemodel.setValue("Java", new Double(50.2));
   piemodel.setValue("VB", new Double(20.5));
   piemodel.setValue("PHP", new Double(15.5));
 </zscript>
 	<label value="pie" />
 	<chart id="piechart" title="Pie Chart" width="500" height="250"
 		type="pie" threeD="false" fgAlpha="128" onClick="drilldown()" />
 	<zscript>
   piechart.setModel(piemodel);
 </zscript>
 </vbox>

Charts based on Category Model

Type
Model
3D
bar
 CategoryModel
o
line
 CategoryModel or XYModel
o
area
 CategoryModel or XYModel
x
stacked_bar
CategoryModel
o
stacked_area
CategoryModel or XYModel
x
waterfall
CategoryModel
x

004 BarChart.png 005 BarChart 3D.png 006 StackedBar.png 007 StackedBar 3D.png 008 LineChart.png 009 LineChart 3D.png 010 AreaChart.png 011 StackedAreaChart.png 012 WaterfallChart.png 

<vbox>
<zscript>
CategoryModel catmodel = new SimpleCategoryModel();
catmodel.setValue("2001", "Q1", new Integer(20));
catmodel.setValue("2001", "Q2", new Integer(35));
catmodel.setValue("2001", "Q3", new Integer(40));
catmodel.setValue("2001", "Q4", new Integer(55));
catmodel.setValue("2002", "Q1", new Integer(40));
catmodel.setValue("2002", "Q2", new Integer(60));
catmodel.setValue("2002", "Q3", new Integer(70));
catmodel.setValue("2002", "Q4", new Integer(90));
</zscript>

	<label value="bar" />
	<chart id="barchart" title="Bar Chart" width="500" height="250"
		type="bar" threeD="false" fgAlpha="128" onClick="drilldown()" />
	<zscript>
  barchart.setModel(catmodel);
</zscript>
</vbox>

Charts based on XY Model

Type
Model
3D
line
 CategoryModel or XYModel
o
area
 CategoryModel or XYModel
x
stacked_area
CategoryModel or XYModel
x
polar
XYModel
x
scatter
XYModel
x
time_series
XYModel
x
polar
XYModel
x
step_area
XYModel
x
step
XYModel
x
histogram
XYModel
x


013 PolarChart.png 014 ScatterChart.png 015 TimeSeriesChart.png 016 XY AreaChart.png 017 XY LineChart.png 018 StepAreaChart.png 019 StepChart.png 020 XY StackedAreaChart.png 021 XY BarChart.png 022 HistogrammChart.png 

<vbox>
<zscript>
XYModel xymodel = new SimpleXYModel();
xymodel.addValue("2001", new Integer(20), new Integer(120));
xymodel.addValue("2001", new Integer(40), new Integer(135));
xymodel.addValue("2001", new Integer(60), new Integer(140));
xymodel.addValue("2001", new Integer(80), new Integer(160));

xymodel.addValue("2002", new Integer(30), new Integer(120));
xymodel.addValue("2002", new Integer(50), new Integer(135));
xymodel.addValue("2002", new Integer(70), new Integer(140));
xymodel.addValue("2002", new Integer(90), new Integer(160));
</zscript>


	<label value="polar" />
	<chart id="polar" title="Polar Chart" width="500" height="250"
		type="polar" threeD="false" fgAlpha="128" onClick="drilldown()" />
	<zscript>
  polar.setModel(xymodel);
</zscript>
</vbox>

<vbox>
<zscript>
XYModel datemodel = new SimpleXYModel();
datemodel.addValue("2001", new Long(time(2001, 5, 2, 1, 10, 15).getTime()), new Integer(120));
datemodel.addValue("2001", new Long(time(2001, 5, 2, 2, 10, 15).getTime()), new Integer(135));
datemodel.addValue("2001", new Long(time(2001, 5, 2, 3, 10, 15).getTime()), new Integer(140));
datemodel.addValue("2001", new Long(time(2001, 5, 2, 4, 10, 15).getTime()), new Integer(160));

datemodel.addValue("2002", new Long(time(2001, 5, 2, 1, 10, 20).getTime()), new Integer(125));
datemodel.addValue("2002", new Long(time(2001, 5, 2, 2, 10, 20).getTime()), new Integer(130));
datemodel.addValue("2002", new Long(time(2001, 5, 2, 3, 10, 20).getTime()), new Integer(120));
datemodel.addValue("2002", new Long(time(2001, 5, 2, 4, 10, 20).getTime()), new Integer(180));
</zscript>

	<label value="step" />
	<chart id="step" title="Step Chart" width="500" height="250"
		type="step" threeD="false" fgAlpha="128" onClick="drilldown()" />
	<zscript>
  step.setModel(datemodel);
</zscript>
</vbox>

Charts based on HiLo Model

Type
Model
3D
candlestick
HiLoModel
x
hilow
 HiLoModel
x


023 CandlestickChart.png 024 HiLoChart.png

The data model needs this input data:

  • date
  • open
  • high
  • low
  • close
  • volume
<vbox>
<zscript>
HiLoModel hilomodel = new SimpleHiLoModel();
long d = new Date().getTime();
hilomodel.addValue(new Date(d),  new Double(45.5),  new Double(54.2), new Double(19.9), new Double(42.8), new Double(20));
hilomodel.addValue(new Date(d+1000),  new Double(46.5),  new Double(55.2),  new Double(43.8), new Double(50.9),   new Double(32));
hilomodel.addValue(new Date(d+2000),  new Double(47.5),  new Double(56.2),  new Double(44.8), new Double(51.9),   new Double(33));
hilomodel.addValue(new Date(d+3000),  new Double(48.5),  new Double(57.2),  new Double(45.8), new Double(52.9),   new Double(34));
hilomodel.addValue(new Date(d+4000),  new Double(49.5),  new Double(58.2),  new Double(46.8), new Double(53.9),   new Double(35));
hilomodel.addValue(new Date(d+5000),  new Double(50.5),  new Double(59.2),  new Double(47.8), new Double(54.9),   new Double(36));
hilomodel.addValue(new Date(d+6000),  new Double(51.5),  new Double(60.2),  new Double(48.8), new Double(55.9),   new Double(37));
hilomodel.addValue(new Date(d+7000),  new Double(52.5),  new Double(61.2),  new Double(49.8), new Double(56.9),   new Double(38));
hilomodel.addValue(new Date(d+8000),  new Double(53.5),  new Double(62.2),  new Double(50.8), new Double(57.9),   new Double(39));
hilomodel.addValue(new Date(d+9000),  new Double(54.5),  new Double(63.2),  new Double(51.8), new Double(58.9),   new Double(40));
hilomodel.addValue(new Date(d+10000),  new Double(55.5),  new Double(64.2),  new Double(52.8), new Double(59.9),   new Double(41));
hilomodel.addValue(new Date(d+11000),  new Double(56.5),  new Double(65.2),  new Double(53.8), new Double(60.9),   new Double(42));
hilomodel.addValue(new Date(d+12000),  new Double(57.5),  new Double(66.2),  new Double(54.8), new Double(61.9),   new Double(43));
hilomodel.addValue(new Date(d+13000),  new Double(58.5),  new Double(67.2),  new Double(55.8), new Double(62.9),   new Double(44));
hilomodel.addValue(new Date(d+14000),  new Double(59.5),  new Double(68.2),  new Double(56.8), new Double(63.9),   new Double(45));
hilomodel.addValue(new Date(d+15000),  new Double(60.5),  new Double(69.2),  new Double(57.8), new Double(64.9),   new Double(46));
hilomodel.addValue(new Date(d+16000),  new Double(61.5),  new Double(70.2),  new Double(58.8), new Double(65.9),   new Double(47));
hilomodel.addValue(new Date(d+17000),  new Double(62.5),  new Double(71.2),  new Double(59.8), new Double(66.9),   new Double(48));
hilomodel.addValue(new Date(d+18000),  new Double(63.5),  new Double(72.2),  new Double(60.8), new Double(67.9),   new Double(49));
</zscript>

	<label value="candlestick" />
	<chart id="candlestick" title="Candlestick Chart" width="500"
		height="250" type="candlestick" threeD="false" fgAlpha="128"
		onClick="drilldown()" />
	<zscript>
  candlestick.setModel(hilomodel);
</zscript>
</vbox>

Charts based on XYZ Model

025 BubbleChart.png 026 HorizontalBubbleChart.png 

<vbox>
<zscript>
XYZModel xyzmodel = new SimpleXYZModel();
xyzmodel.addValue("2001", new Integer(20), new Integer(120), new Integer(8));
xyzmodel.addValue("2001", new Integer(40), new Integer(135), new Integer(10));
xyzmodel.addValue("2001", new Integer(60), new Integer(140), new Integer(6));
xyzmodel.addValue("2001", new Integer(80), new Integer(160), new Integer(12));

xyzmodel.addValue("2002", new Integer(30), new Integer(120), new Integer(4));
xyzmodel.addValue("2002", new Integer(50), new Integer(135), new Integer(5));
xyzmodel.addValue("2002", new Integer(70), new Integer(140), new Integer(3));
xyzmodel.addValue("2002", new Integer(90), new Integer(160), new Integer(6));
</zscript>

	<label value="bubble" />
	<chart id="bubble" title="Bubble Chart" width="500" height="250"
		type="bubble" threeD="false" fgAlpha="128" onClick="drilldown()" />
	<zscript>
  bubble.setModel(xyzmodel);
</zscript>
</vbox>

Charts based on Wafer Model

027 WaferMapChart.png

<vbox>
<zscript><![CDATA[
final int xdim = 30;
final int ydim = 20;
final Random random = new Random();
WaferMapModel wafermodel = new WaferMapModel(xdim, ydim);
for (int x = 0; x < xdim; x++) {
	for (int y = 0; y < ydim; y++) {
		wafermodel.addValue(random.nextInt(5), x, y);
	}
}
]]></zscript>

	<label value="wafermap" />
	<chart id="wafermap" title="Wafer Map Chart" width="500"
		height="400" type="wafermap" threeD="false" fgAlpha="128"
		onClick="drilldown()" />
	<zscript>
  wafermap.setModel(wafermodel);
</zscript>
</vbox>

Charts based on Gantt Model

028 GanttChart.png

<chart id="gantt" title="Gantt Chart" width="700" height="400"
        type="gantt" threeD="false" fgAlpha="128" dateFormat="yyyy/MM/dd" >
    <zscript><![CDATA[
        import org.zkoss.zul.GanttModel.GanttTask;
         
        public Date date(int year, int month, int day) {
            final java.util.Calendar calendar = java.util.Calendar.getInstance();
            calendar.set(year, month-1, day);
            final Date result = calendar.getTime();
            return result;
        }
        //series, task (task description, start, end, complete percentage)
        GanttModel ganttmodel = new GanttModel();
        ganttmodel.addValue("Scheduled", new GanttTask("Write Proposal", date(2008,4,1), date(2008,4,5), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Obtain Approval", date(2008,4,9), date(2008,4,9), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Requirements Analysis", date(2008,4,10), date(2008,5,5), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Design Phase", date(2008,5,6), date(2008,5,30), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Design Signoff", date(2008,6,2), date(2008,6,2), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Alpha Implementation", date(2008,6,3), date(2008,7,31), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Design Review", date(2008,8,1), date(2008,8,8), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Revised Design Signoff", date(2008,8,10), date(2008,8,10), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Beta Implementation", date(2008,8,12), date(2008,9,12), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Testing", date(2008,9,13), date(2008,10,31), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Final Implementation", date(2008,11,1), date(2008,11,15), 0.0));
        ganttmodel.addValue("Scheduled", new GanttTask("Signoff", date(2008,11,28), date(2008,11,30), 0.0));
         
        ganttmodel.addValue("Actual", new GanttTask("Write Proposal", date(2008,4,1), date(2008,4,3), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Obtain Approval", date(2008,4,9), date(2008,4,9), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Requirements Analysis", date(2008,4,10), date(2008,5,15), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Design Phase", date(2008,5,15), date(2008,6,17), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Design Signoff", date(2008,6,30), date(2008,6,30), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Alpha Implementation", date(2008,7,1), date(2008,9,12), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Design Review", date(2008,9,12), date(2008,9,22), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Revised Design Signoff", date(2008,9,25), date(2008,9,27), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Beta Implementation", date(2008,8,12), date(2008,9,12), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Testing", date(2008,10,31), date(2008,11,17), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Final Implementation", date(2008,11,18), date(2008,12,5), 0.0));
        ganttmodel.addValue("Actual", new GanttTask("Signoff", date(2008,12,10), date(2008,12,11), 0.0));
        gantt.setModel(ganttmodel);
    ]]></zscript>
</chart>

Charts based on Wind Model

029 WindPlotChart.png

<vbox>
<zscript>
XYZModel windmodel = new SimpleXYZModel();
//series, date, direction (0-12), force(0-12)
windmodel.addValue("Wind!", new Long(date(2008, 1, 3).getTime()), new Double(0d), new Double(10.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 4).getTime()), new Double(1d), new Double(8.5));
windmodel.addValue("Wind!", new Long(date(2008, 1, 5).getTime()), new Double(2.0), new Double(10.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 6).getTime()), new Double(3.0), new Double(10.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 7).getTime()), new Double(4.0), new Double(7.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 8).getTime()), new Double(5.0), new Double(10.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 9).getTime()), new Double(6.0), new Double(8.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 10).getTime()), new Double(7.0), new Double(11.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 11).getTime()), new Double(8.0), new Double(10.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 12).getTime()), new Double(9.0), new Double(11.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 13).getTime()), new Double(10.0), new Double(3.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 14).getTime()), new Double(11.0), new Double(9.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 15).getTime()), new Double(12.0), new Double(11.0));
windmodel.addValue("Wind!", new Long(date(2008, 1, 16).getTime()), new Double(0.0), new Double(0.0));
</zscript>

	<label value="wind" />
	<chart id="wind" title="Wind Plot" width="700" height="400"
		type="wind" threeD="false" fgAlpha="128" onClick="drilldown()"
		dateFormat="yyyy/MM/dd" />
	<zscript>
  wind.setModel(windmodel);
</zscript>
</vbox>

Methods

Name
Description
Return Data Type
getAreaListener Returns the renderer to render each area, or null if the default renderer is used. ChartAreaListener
getBgRGB Get the background color in int array (0: red, 1: green, 2:blue). int[]
getEngine Returns the implemetation chart engine. ChartEngine
getIntHeight Get the chart int width in pixel int
getIntWidth Get the chart int width in pixel int
getModel Returns the chart model associated with this chart, or null if this chart is not associated with any chart data model ChartModel
getPaneRGB Get the pane color in int array (0: red, 1: green, 2:blue). int[]
getTimeZone Returns the time zone that this Time Series Chart belongs to, or null if the default time zone is used. TimeZone
newChartEngine Instantiates the default chart engine ChartEngine
setAreaListener Sets the renderer which is used to render each area
setEngine Sets the chart engine
setModel Sets the chart model associated with this chart
setTimeZone Sets the time zone that this Time Series Chart belongs to, or null if the default time zone is used
smartDrawChart mark a draw flag to inform that this Chart needs update


Properties

Property
Description
Data Type
Default Value
bgAlpha
 Sets the background alpha (transparency, 0 ~ 255).
int
255
bgColor
 Sets the background color of the chart.It must be in #RRGGBB format (hexdecimal).
String
null
fgAlpha
 Sets the foreground alpha (transparency, 0 ~ 255).
int
255
height
 Sets height of chart, it must be a integer string
String
200
orient
 Sets the chart orientation.

Values: vertical | horizontal

String
vertical
paneAlpha
 Sets the pane alpha (transparency, 0 ~ 255).
int
255
panelColor
 Sets the pane color of the chart.It must be #RRGGBB format (hexdecimal).
String
null
period
 Sets the period used in Time Series Chart.

Values : millisecond | second | minute | | hour | day | week | month | quarter | year

String
null
showLegend
 Sets the flag of showing the chart's legend
boolean
true
showTooltiptext
 Sets the flag of showing the chart's tool tip text
boolean
true
threeD
 Sets true to show three dimensional graph (If a type of chart got no 3d peer, this is ignored).
boolean
false
title
 Sets the chart's title.
String
null
type
 Set the chart's type

Values: pie | ring | bar | line | area | stacked_bar | stacked_area | waterfall | polar | scatter | time_series | polar | step_area | step | histogram | candlestick | hilow

String
null
width
 Sets width of chart, it must be a integer string
String
400
xAxis
 Sets the label in xAxis.
String
null
yAxis
 Sets the label in yAxis.
String
null


Supported Events

Name
Event Type
onClick
 [#MouseEvent org.zkoss.zk.ui.event.MouseEvent]


Description: Denotes user has clicked the component.

Use getX(), getY() method to get coordinates.

Use getArea() method to get the area component which user clicks on.

onClick event handling

If you want to catch the clicks onto chart elements, you can use this source code: 

<zscript>
  void drilldown() {
  	String areaid = event.getArea();
  	if (areaid != null) {
	  	Area area = self.getFellow(areaid);
	  	alert(""+area.getAttribute("entity")+": "+area.getTooltiptext());
	}
  }
</zscript>



Copyright © Bernd Will. This article is licensed under GNU Free Documentation License.


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