Chart Question

[ntobik]

I have a few questions in regards to the chart tool functionality in iReport.

 

1. On a bar chart, is there any way to make the category text labels angled at the bottom? Currently my dates are cut off with a ..., I'd like them to be at a 45 deg angle if possible so everything will be visible.

 

2. Is there any way to specify specific colors for the charts? I need all my charts to use the same colors throughout the reports so it's consistent.

 

3. How do you use a customizer class within the chart tool? I have the manual and it mentions it briefly, but I'd like more details or a simple example if possible. Thank you.

 

Nate

[ntobik]

I ended up solving all of my problems and I thought I should share with everyone else how I did it.

 

JRChartCustomizer...

 

You implement that interface and it gives you access to the JFreeChart object, you can modify the object to your hearts content and all of the changes will be rendered in with the report. Let me know if anyone runs into any problems.

[wahoyaho]

Hi, sorry I'm kind of new to this, could you explain in greater detail how I can implement JRChartCustomizer and modify the existing chart? Thanks.

[zmanning]

Code:

public class FirstCustomizer implements JRChartCustomizer {
    public void customize(JFreeChart chart, JRChart jasperChart) {	
	BarRenderer renderer = (BarRenderer) chart.getCategoryPlot()
		.getRenderer();
	CategoryPlot plot = chart.getCategoryPlot();
	CategoryAxis cata = plot.getDomainAxis();

 

The code above should be a good starting point. Specify the full name of this class as the customizer class.

[ooober]

hi

 1. you can rotate your label by setting the Label rotation to -25 in Chart Property.

  2. You can change your mutiple bar color by adding series of color in Series Color of Chart property

 

Hasham Habib

 

[mdahlman]

You can find examples of reports that use chart customizers in the SuperMart samples that ship with JasperServer Pro. Downloading that will perhaps be the quickest way to get started.

 

Regards,
Matt
Jaspersoft

[arcioneo]

I'm trying  to do the same(taking about rotation label), but no matter what number I choose, does nothing and the chart looks in the same way

[ashwini]

Hi

This is Amit. Can u tell me how to give path of the JRChartCustomizer class in the chart tool properties (Customizer Class).

I found error as

ErrorÂfillingÂprint...ÂCouldÂnotÂcreateÂchartÂcustomizerÂinstance.

net.sf.jasperreports.engine.JRRuntimeException:ÂCouldÂnotÂcreateÂchartÂcustomizerÂinstance. ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillChart.<init>(JRFillChart.java:326) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillObjectFactory.getChart(JRFillObjectFactory.java:582) ÂÂÂÂatÂnet.sf.jasperreports.engine.base.JRBaseChart.getCopy(JRBaseChart.java:552) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillElementGroup.<init>(JRFillElementGroup.java:88) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillElementContainer.<init>(JRFillElementContainer.java:90) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillBand.<init>(JRFillBand.java:83) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillObjectFactory.getBand(JRFillObjectFactory.java:385) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:432) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:77) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:59) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:147) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:57) ÂÂÂÂatÂnet.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:402) ÂÂÂÂatÂnet.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:234) ÂÂÂÂatÂit.businesslogic.ireport.IReportCompiler.run(IReportCompiler.java:934) ÂÂÂÂatÂjava.lang.Thread.run(UnknownÂSource) CausedÂby:Âjava.lang.ClassNotFoundException:Âtest ÂÂÂÂatÂjava.net.URLClassLoader$1.run(UnknownÂSource) ÂÂÂÂatÂjava.security.AccessController.doPrivileged(NativeÂMethod) ÂÂÂÂatÂjava.net.URLClassLoader.findClass(UnknownÂSource) ÂÂÂÂatÂjava.lang.ClassLoader.loadClass(UnknownÂSource) ÂÂÂÂatÂsun.misc.Launcher$AppClassLoader.loadClass(UnknownÂSource) ÂÂÂÂatÂjava.lang.ClassLoader.loadClass(UnknownÂSource) ÂÂÂÂatÂjava.lang.ClassLoader.loadClassInternal(UnknownÂSource) ÂÂÂÂatÂjava.lang.Class.forName0(NativeÂMethod) ÂÂÂÂatÂjava.lang.Class.forName(UnknownÂSource) ÂÂÂÂatÂnet.sf.jasperreports.engine.util.JRClassLoader.loadClassForRealName(JRClassLoader.java:132) ÂÂÂÂatÂnet.sf.jasperreports.engine.util.JRClassLoader.loadClassForName(JRClassLoader.java:72) ÂÂÂÂatÂnet.sf.jasperreports.engine.fill.JRFillChart.<init>(JRFillChart.java:323) ÂÂÂÂ...Â15Âmore

[wnasich]

  New solution:

See labelRotation> 

http://jasperreports.sourceforge.net/schema.reference.html#plot_labelRotation

Usage: Edit in xml mode, and add the "plot" tag with labelRotation attribute. Example:

 

 

Code: