cewolf « Development « JFreeChart Q&A

1. How to dynamically create params for Cewolf ChartProcessor?    stackoverflow.com

I have an issue trying to create a pie chart in my JSP. I am using Cewolf (and Jfreechart). My code is the following :

<cewolf:chartpostprocessor id="pieChartPP">
<c:forEach items="${requestScope.statsClientGlobal}" var="statClient">
<cewolf:param name="${statClient.siteName}"value="${requestScope.colorMap[statClient.siteCode]}"/>
As you can ...

2. cewolf problem in jboss    jfree.org

hi guys, I m using cewolf tag library to display graphs/charts in my jsp page. It works perfectly with Tomcat5.0, but when i run the same code in jboss4.0, it throws exceptions. Generated servlet error: E:\jboss4\server\default\work\jboss.web\localhost\mc\org\apache\jsp\ServiceUsag Report_jsp.java:731: _jspx_meth_cewolf_colorpaint_0(javax.servlet.jsp.tagext.Js Tag,javax.servlet.jsp.PageContext) in org.apache.jsp.ServiceUsageReport_jsp can ot be applied to (de.laures.cewolf.taglib.tags.SimpleChartTag,javax.servlet.jsp PageContext) if (_jspx_meth_cewolf_colorpaint_0(_jspx_th_cewolf_chart_0, _jspx_page_ ontext)) ^ Generated servlet error: E:\jboss4\server\default\work\jboss.web\localhost\mc\org\apache\jsp\ServiceUsag Report_jsp.java:735: _jspx_meth_cewolf_data_0(javax.servlet.jsp.tagext.JspTag,j vax.servlet.jsp.PageContext) in ...

3. JFreeChart 0.9.16 and cewolf    jfree.org

4. Jfree and Cewolf Stop    jfree.org

5. Cewolf? newbie    jfree.org

6. chart overlay with CEWolf    jfree.org

Hi, I know this forum doesnt really cover CEWolf but I think my question is more a Jfreechart one than a CEWolf one. I'm using Jfreechart via CEWolf. I currently have a line graph comprising 3 series. The dataset provider code uses a DefaultCategoryDataset and calls the addValue method to build the contents for the chart. Id like however to be ...

7. A problem about drawing chart using Cewolf in Solaris    jfree.org

A problem about drawing chart using Cewolf in Solaris by Greece Tue Sep 27, 2005 8:11 am Hi, I am using cewolf to draw chart in Tomcat 4.0. And The program has been run successfully, but when I moved the same program file and used JAR file to the web server, whose OS is Solorias, there has been appearing the ...

8. Radar charts and cewolf    jfree.org

10. Cewolf - just can't make it work    jfree.org

11. CeWolf    jfree.org

12. Creating charts in jpeg rather than png in cewolf    jfree.org

I'm not sure how it is done in Cewolf. I can say that you should avoid jpeg for charts as far as possible. It is a 'lossy' file format - the lost of quality is usually acceptable for photographs, but is particularly noticeable in charts. PNG will reproduce the chart exactly as it was generated.

13. CeWolf    jfree.org

14. JFreeChart with Cewolf and Radar display    jfree.org

Hi! I am using cewolf to display charts from JFreeChart. I saw that we can have a radar display with JFrreeChart. Is it possible to do that with Cewolf 0.12? And can somebody tell me when a new version of cewolf will integrate the last definitive version of JFreeChart? Thanks in advance. Sverine

15. cewolf and java 1.5    jfree.org

Same problem with Tomcat 5.5.x and Java 1.5.0? by dvader666@usa.net Wed Mar 01, 2006 2:13 am I'm having the same problem. The same webapp using Tomcat 4.1.x and Java 1.4.2 now is giving me cewolf errors when moved it to Tomcat 5.5.x and Java 1.5.0. For those charts where I create my own implementation of de.laures.cewolf.DatasetProducer as another Java object ...

16. jfreechart and cewolf    jfree.org

17. Integration - DWR + CeWolf    jfree.org

Hi all, I am working on an Ajax based application, which is using CeWolf framework to generate charts. Everything is working like a charm, thanks to CeWolf and DWR (Direct Web Remoting). The only missing part is calling CeWolf as a service. For now, each time I need to submit a form (using CeWolf Tag Library) to get the chart. Even ...

19. cewolf problem    jfree.org

[3/1/06 10:47:54:700 IST] 7ccc1117 WebGroup I SRVE0181I: [Struts Blank Application] [/CD] [Servlet.LOG]: CewolfServlet: org/jfree/chart/axis/CategoryAxis3D: java.lang.NoClassDefFoundError: org/jfree/chart/axis/CategoryAxis3D at org.jfree.chart.ChartFactory.createStackedBarChart3D(ChartFactory.java:797) at de.laures.cewolf.taglib.CewolfChartFactory.getChartInstance(CewolfChartFactory.java:111) at de.laures.cewolf.taglib.SimpleChartDefinition.produceChart(SimpleChartDefinition.java:30) at de.laures.cewolf.taglib.AbstractChartDefinition.getChart(AbstractChartDefinition.java:121) at de.laures.cewolf.taglib.ChartImageDefinition.ensureRendered(ChartImageDefinition.java:137) at de.laures.cewolf.taglib.ChartImageDefinition.getSize(ChartImageDefinition.java:146) at de.laures.cewolf.CewolfRenderer.doGet(CewolfRenderer.java:144) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110) at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174) at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313) at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116) at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283) at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42) at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40) at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983) at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564) at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200) at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119) at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276) at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71) at ...

20. facing Problems in CEWOLF    jfree.org

21. developer guide for cewolf    jfree.org

23. How to use processChart method in CEWolf    jfree.org

HI I am creating a graph with 2 Y-Axis. So I need to add following code to generate second Y-Axis. So need to add below code in the method processChart().So how to add this method in CEWolf and where to call this method. final NumberAxis rangeAxis0 = new NumberAxis("Interest"); rangeAxis0.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); final NumberAxis rangeAxis1 = new NumberAxis("Principal"); rangeAxis1.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); plot.setRangeAxis(0, rangeAxis0); plot.setRangeAxis(1, rangeAxis1); ...

24. cewolf killing tomcat ??    jfree.org

cewolf killing tomcat ?? by haroldgimenez Tue Apr 25, 2006 3:45 pm Hi everyone: I have spent long hours trying to fix this problem to no avail. After getting to the 57th page on google and reading over several forums, I've decided to post as I can't see anyone with the same problem. I have developed a simple JSP which ...

25. Browser process doesn't close when using CEWOLF    jfree.org

Hi, I am encountering a serious problem when working with CEWOLF. I am using Internet Explorer 6.0 and JRE 1.4.2 java plugin. I am using BEA weblogic 8.0 application server. My web application includes several iFrames. Some of the iFrames contain applets. When I display a chart using CEWOLF in a different iFrame and then try to close the browser using ...

26. Relationship between Cewolf and JFreeChart?    jfree.org

The CeWolf-project is a JSP-wrapper/taglib around JFreeChart. It provides an easy way to add charting to your application without having to deal with ugly implementation details. On the other hand, if you need 110% control over your code and need to tweak the charts in a non-standard way, then CeWolf might cause more trouble than it does good. The projects are ...

27. SpiderWebChart and cewolf    jfree.org

28. Using cewolf:param tag    jfree.org

Hi, I am trying to produce various types of charts from data that I retrieve from the DB. I have spent weeks doing some extensive testing and I have found that Collections can not be read through the cewolf:param tag. I populated some dummy data in my producer bean to do the testing. When I put the below code in my ...

29. Problem with Cewolf    jfree.org

Well...that would be great! But, what if you need to run it on Netware which doesn't have a jre higher than 1.4? I'm getting this same problem trying to run it on Netware 6.5. It works fine running java 1.4 tomcat 4.x but when I try to run it on java 1.4 and tomcat 5.0, I get the same problem.

30. cewolf project ?    jfree.org

31. NoClassDefFound when trying to display chart through cewolf    jfree.org

java.lang.NoClassDefFoundError: org/jfree/chart/title/Title de.laures.cewolf.taglib.tags.SimpleChartTag.createChartDefinition(SimpleChartTag.java:25) de.laures.cewolf.taglib.tags.AbstractChartTag.(AbstractChartTag.java:44) de.laures.cewolf.taglib.tags.SimpleChartTag.(SimpleChartTag.java:22) sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) java.lang.reflect.Constructor.newInstance(Constructor.java:513) java.lang.Class.newInstance0(Class.java:355) java.lang.Class.newInstance(Class.java:308) org.apache.jasper.runtime.TagHandlerPool.get(TagHandlerPool.java:116) org.apache.jsp.view.chartTest_jsp._jspx_meth_cewolf_chart_0(Unknown Source) org.apache.jsp.view.chartTest_jsp._jspService(Unknown Source) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) ...

32. New problem with cewolf    jfree.org

33. Problem with Cewolf    jfree.org

34. Is cewolf still alive?    jfree.org

35. About VertiacalBar Chart    jfree.org

36. Chart missing using cewolf....    jfree.org

Dear Forum, I'm trying to embed CEWOLF stuff into my existing web applications with only partial success. I have taken the basic servlet supplied in the cewolf tutorial, and created a basic JSP to access it. Everything seems to work up to a point: I assume that all libraries are accessible as the servlet can import the libraries, and the .tld ...

37. cewolf not working on aix    jfree.org

I have the following code in a jsp:

It renders the appropriate chart on my localhost weblogic 8.1 server on windows, but it does not render (the ol' red x) on weblogic 8.1 on ...

40. cewolf parameter tag    jfree.org

Don't know if this is the right forum but I have been trying to get the cewolf param tag to work. Does anyone have an example I could look at? The error I'm getting is at this line Parameterized parent = (Parameterized)getParent(); in the ParamTag.java Actual error: Internal Servlet Error: javax.servlet.ServletException: de.laures.cewolf.taglib.tags.DataTag at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459) at _0002fmy_00033DBar_0002ejspmy3DBar_jsp_3._jspService(_0002fmy_00033DBar_0002ejspmy3DBar_jsp_3.java:295) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at ...