jcharts-users — For users of jCharts

[jCharts-users] Problem::JCharts with applets

[Ashish <ag...@in...>]

Hi,
I am using JApplet to run my program which works well as a stand alone
application using frames.But with JApplets it gives the following error:

java.lang.NoClassDefFoundError: org/jCharts/properties/ChartTypeProperties
	at JCTest27.init(JCTest27.java:36)
	at sun.applet.AppletPanel.run(AppletPanel.java:347)
	at java.lang.Thread.run(Thread.java:536)
Process Exit...

What could be the cause ?Please help me.

[jCharts-users] Embedding Jchart in a jsp with html content

[sandeep k. <kot...@ya...>]

Hi,
 
I am developing a Jchart based report for a specific database using JSP. Can I know how to embed the JPEG chart that is being created on a JSP page with other HTML content. Any code snippet can be very helpful.
 
Thanking you all,
Sandeep.


Sandeep Kotagiri



__________________________________________________
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[jCharts-users] Can't display two datasets

[Stephen Q. <st...@ni...>]

Hi,

I'm new to JCharts.  I have modified the ComboChart example to display
two datasets.  After defining the two datasets, I use addIAxisPlotDataSet()
to add each dataset to a dataSeries.  However, for some reason, only the
last dataset added is visible in the graph.  I have tried this with some of
the other examples (e.g., the ScatterPlotDataSeries/DataSet) and it seems
to only render one dataset (typically, the last dataset added to the chart).
I cannot seem to find a working example of two separate datasets in
JCharts 0.7.5.  Perhaps I am adding datasets incorrectly?  (by the way,
I am using JDK 1.4.2 on 64-bit Fedora/Linux and Jakarta Tomcat 5.0.29).

Here is my small modification to the ComboChartServlet example:

try
{
    String[] xAxisLabels = {"1995", "1996", "1997", "1998", "1999", "2000", 
"2001", "2002", "2003", "2004"};
    String xAxisTitle = "Years";
    String yAxisTitle = "Problems";
    String title = "Micro$oft At Work";
    IAxisDataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle, 
yAxisTitle, title );

    double[][] data = new double[][]{{1500, 6880, 4510, 2600, 1200, 1580, 
8000, 4555, 4000, 6120}};
    double[][] data2 = new double[][]{{1000, 2000, 3000, 4000, 5000, 6000, 
6100, 6500, 7000, 8000}};

    String[] legendLabels = {"Bugs"};
    Paint[] linePaints = new Paint[]{Color.red};
    Paint[] linePaints2 = new Paint[]{Color.blue};
    dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data, 
legendLabels, linePaints, ChartType.LINE, this.lineChartProperties ) );
    dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data2, 
legendLabels, linePaints2, ChartType.LINE, this.lineChartProperties ) );

    AxisChart axisChart = new AxisChart( dataSeries, this.chartProperties, 
this.axisProperties, this.legendProperties, this.width, this.height );
    ServletEncoderHelper.encodeJPEG13( axisChart, 1.0f, response );
}
catch ()...


Here, only data2 (in blue) is rendered.  How do I get both datasets to be 
rendered on the chart?


Thanks,
Steve






--
Stephen Quirolgico, Ph.D.
National Institute of Standards and Technology
100 Bureau Dr., Stop 8920
Gaithersburg, MD 20899-8920  USA
Tel: (301) 975-8426
Fax: (301) 590-0932
WWW: http://www.antd.nist.gov/~steveq

Re: [jCharts-users] Swing panel : chart not working!!!

[Uder Z. <ude...@gm...>]

hello i think the easiest way is to conver the chart to an image first
then set it as an icon on a button


On Sat, 26 Mar 2005 13:17:40 +0000 (GMT), Ravikiran
<rav...@ya...> wrote:
> hello,
>              Plz tell me whats wrong with this code.The chart appears
> momentarily and vanishes.    
>  
>  
> import org.jCharts.chartData.ChartDataException;
> import org.jCharts.chartData.PieChartDataSet;
> import org.jCharts.nonAxisChart.PieChart2D;
> import org.jCharts.properties.*;
> import javax.swing.*;
> import java.awt.event.*;
> import java.awt.*;
>  
>     public class test
>     {
>            JFrame frame = new JFrame();
>            MenuBar jmb = new MenuBar();
>            Menu file = new Menu("FILE");
>            MenuItem chart = new MenuItem("chart") ;
>            //chart.addActionListener(new actionlistener(){
>           // public void actionPerformed(ActionEvent e){
>            //SwingDemo s = new SwingDemo(12,34,56);
>            //};
>            public test()
>            {
>                   file.add(chart);
>                   jmb.add(file);
>                   frame.setMenuBar(jmb);
>                   frame.setSize(new Dimension(200,300));
>                   frame.setVisible(true);
>                   chart.addActionListener(new ActionListener(){
>                   public void actionPerformed(ActionEvent e){
>                   try{
>                   SwingDemo s = new SwingDemo(12,34,56);
>                   }catch(ChartDataException ce){}
>                    catch(PropertyException pe)  {}
>                  }});
>            }
>            public static void main(String args[])
>            {
>                   test t = new test();
>            }
>     }
> 
> ________________________________
> Do you Yahoo!?
> Yahoo! Small Business - Try our new resources site! 
> 
>

[jCharts-users] Swing panel : chart not working!!!

[Ravikiran <rav...@ya...>]

hello,
             Plz tell me whats wrong with this code.The chart appears momentarily and vanishes.    
 
 
import org.jCharts.chartData.ChartDataException;
import org.jCharts.chartData.PieChartDataSet;
import org.jCharts.nonAxisChart.PieChart2D;
import org.jCharts.properties.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
 
    public class test
    {
           JFrame frame = new JFrame();
           MenuBar jmb = new MenuBar();
           Menu file = new Menu("FILE");
           MenuItem chart = new MenuItem("chart") ;
           //chart.addActionListener(new actionlistener(){
          // public void actionPerformed(ActionEvent e){
           //SwingDemo s = new SwingDemo(12,34,56);
           //};
           public test()
           {
                  file.add(chart);
                  jmb.add(file);
                  frame.setMenuBar(jmb);
                  frame.setSize(new Dimension(200,300));
                  frame.setVisible(true);
                  chart.addActionListener(new ActionListener(){
                  public void actionPerformed(ActionEvent e){
                  try{
                  SwingDemo s = new SwingDemo(12,34,56);
                  }catch(ChartDataException ce){}
                   catch(PropertyException pe)  {}
                 }});
           }
           public static void main(String args[])
           {
                  test t = new test();
           }
    }

		
---------------------------------
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 Yahoo! Small Business - Try our new resources site! 

[jCharts-users] Swing problem

[Ravikiran <rav...@ya...>]

I want to use jcarts in 1 program.But as i pass the values to the swing demo example provided..there is the jframe with a flash of the chart for a moment.then the char vanishes and only the empty frame remains...
what can be the reason?plz suggest me a solution...

Yahoo! India Matrimony: Find your life partneronline.

[jCharts-users] mouse support

[<mi...@gm...>]

Hi,

I want to use mouse events in a scatter plot chart, but can't find a class
that inherits from java.awt.Component where I can add my 'MouseListener'. It
there mouse support in jCharts available? If yes could someone provide me
with some code snippet.

Thank you

-- 
Mike

DSL Komplett von GMX +++ Supergünstig und stressfrei einsteigen!
AKTION "Kein Einrichtungspreis" nutzen: http://www.gmx.net/de/go/dsl

RE: [jCharts-users] Can't connect to X11 window server

[Chris M. <ch...@de...>]

You'll either need to run up a virtual X server on the server (google Xvfb)
or add this flag to the JVM that is running the server
-Djava.awt.headless=true (I think you'll need to be on Java 1.4+ for this
support.
 
C


  _____  

From: jch...@li...
[mailto:jch...@li...] On Behalf Of George Pieri
Sent: Wednesday, 16 March 2005 10:35 a.m.
To: jch...@li...
Subject: [jCharts-users] (no subject)


 
I tried running the PieChart2DServlet  in our web BEA weblogic server
and I get the error message
 
Can't connect to X11 window server

 

Is X Windows need to build the  charts because we don't

have this installed and was hoping that the charts would

just get built in a browser.

 

I'm not subscribed to the list. If possible can you email me

at geo...@mc...

 

Thanks.

George

RE: [jCharts-users] (no subject)

[Sudheer G. <sgu...@ip...>]

The following property "-Djava.awt.headless=3Dtrue" needs to be set.
=20
Regards
-Sudheer


________________________________

	From: jch...@li...
[mailto:jch...@li...] On Behalf Of George
Pieri
	Sent: Tuesday, March 15, 2005 1:35 PM
	To: jch...@li...
	Subject: [jCharts-users] (no subject)
=09
=09
	=20
	I tried running the PieChart2DServlet  in our web BEA weblogic
server
	and I get the error message
	=20
	Can't connect to X11 window server

	=20

	Is X Windows need to build the  charts because we don't

	have this installed and was hoping that the charts would

	just get built in a browser.

	=20

	I'm not subscribed to the list. If possible can you email me

	at geo...@mc...

	=20

	Thanks.

	George

[jCharts-users] (no subject)

[George P. <geo...@mc...>]

 
I tried running the PieChart2DServlet  in our web BEA weblogic server
and I get the error message
 
Can't connect to X11 window server

 

Is X Windows need to build the  charts because we don't

have this installed and was hoping that the charts would

just get built in a browser.

 

I'm not subscribed to the list. If possible can you email me

at geo...@mc...

 

Thanks.

George

[jCharts-users] Help with creating scatter plot without connecting lines

[Kevin V. <its...@ho...>]

<html><div style='background-color:'><DIV class=RTE>
<DIV><FONT face=Arial size=2>Hi everyone,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>I have a working scatter plot, but would like to graph it without the lines connecting the points.&nbsp; I was hoping there is an easy way to do this.&nbsp; I have seen that you can create a point chart, but I have already created the scatter plot in a large process, and starting over would not be the best.&nbsp; All I really need to do is find a way to create the ScatterPlot with its data set knowing to graph as ChartType.POINT.&nbsp; Any ideas???&nbsp; Thanks for the help!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Kevin</FONT></DIV></DIV></div></html>

RE: [jCharts-users] Re: new to jFreeChart

[Irene N. <ire...@ho...>]

Yeah sorry I realised that I put jfreechart instead of jcharts. Anyway so is 
there any examples.

>From: Nicola Ken Barozzi <nic...@ap...>
>Reply-To: jch...@li...
>To: jch...@li...
>Subject: [jCharts-users] Re: new to jFreeChart
>Date: Mon, 07 Mar 2005 16:01:30 +0100
>
>Irene Nessa wrote:
>>I 'm new to  jFreeChart. I got the example war file working so far. I was 
>>wondering if there was an example code for 3D Pie chart. Also how to do a 
>>dynamic chart, I want chart information to come from a database. Any 
>>sample would most helpful or a link to site where I can such information. 
>>Many thanks  in advance.
>
>This is jCharts, not JFreeChart.
>
>Still Java, still charts, another license, another codebase.
>
>--
>Nicola Ken Barozzi                   nic...@ap...
>             - verba volant, scripta manent -
>    (discussions get forgotten, just code remains)
>---------------------------------------------------------------------
>
>
>
>-------------------------------------------------------
>SF email is sponsored by - The IT Product Guide
>Read honest & candid reviews on hundreds of IT Products from real users.
>Discover which products truly live up to the hype. Start reading now.
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RE: [jCharts-users] new to jFreeChart

[Nair, P. (A. - N R. <Pra...@au...>]

If you are using JChart all you have to do is 
retrieve data from database as you would do
with any other application using JDBC/ODBC
and then use the resultset values to populate 
the 2-dimensional double array.

I am not sure if thats same with JFree chart, 
should be pretty much the same.

cheers
pradeep

-----Original Message-----
From: Irene Nessa [mailto:ire...@ho...]
Sent: Monday, 7 March 2005 9:53 PM
To: jch...@li...
Subject: [jCharts-users] new to jFreeChart


I 'm new to  jFreeChart. I got the example war file working so far. I was 
wondering if there was an example code for 3D Pie chart. Also how to do a 
dynamic chart, I want chart information to come from a database. Any sample 
would most helpful or a link to site where I can such information. Many 
thanks  in advance.




-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
jCharts-users mailing list
jCh...@li...
https://lists.sourceforge.net/lists/listinfo/jcharts-users

[jCharts-users] Re: new to jFreeChart

[Nicola K. B. <nic...@ap...>]

Irene Nessa wrote:
> I 'm new to  jFreeChart. I got the example war file working so far. I 
> was wondering if there was an example code for 3D Pie chart. Also how to 
> do a dynamic chart, I want chart information to come from a database. 
> Any sample would most helpful or a link to site where I can such 
> information. Many thanks  in advance.

This is jCharts, not JFreeChart.

Still Java, still charts, another license, another codebase.

-- 
Nicola Ken Barozzi                   nic...@ap...
             - verba volant, scripta manent -
    (discussions get forgotten, just code remains)
---------------------------------------------------------------------

[jCharts-users] new to jFreeChart

[Irene N. <ire...@ho...>]

I 'm new to  jFreeChart. I got the example war file working so far. I was 
wondering if there was an example code for 3D Pie chart. Also how to do a 
dynamic chart, I want chart information to come from a database. Any sample 
would most helpful or a link to site where I can such information. Many 
thanks  in advance.

[jCharts-users] help

[<Dia...@nr...>]

I am trying to find a way of clicking on subject categories underneath =
a pie
chart in order to=20

get to the subcategories indicated by the colors of the pie chart.

http://source.cisti-icist.nrc-cnrc.gc.ca/cs/journals/subjects_e.html

At the moment, one has to click on the different colors of the pie =
chart in
order to go to the subcategories.

If someone is colour blind, it would help to use the text underneath =
the pie
chart in order to go to the subcategories.

How do I do that?

The part of the code for the english pie chart:

PieChart2DProperties p2dProps =3D new PieChart2DProperties();
    PieChartDataSet p2dData =3D new PieChartDataSet("Journal Coverage", =
data,
                                                  labels_e, paints,
                                                  p2dProps);
    LegendProperties lp =3D new LegendProperties();
    lp.setBorderStroke(null);
    lp.setBorderPaint(null);
    lp.setEdgePadding(1.0f);
    lp.setPlacement( LegendAreaProperties.BOTTOM );
    lp.setNumColumns(1);
    lp.setFont(new Font("Arial", Font.PLAIN, 10));
    PieChart2D p2d =3D new PieChart2D(p2dData, lp,
                                    new ChartProperties(), 450, 600);

    p2d.renderWithImageMap();
    ImageMap imageMap =3D p2d.getImageMap();

    StringBuffer ebuf =3D new StringBuffer();
    ebuf.append("<p>\n<img border=3D\"0\" src=3D\"bsubs_e.jpg\" " +
                "alt=3D\"Journal coverage pie chart\" " +
                "useMap=3D\"#chartMap\">\n");
    ebuf.append("<map name=3D\"chartMap\">\n");

    Iterator iterator=3D imageMap.getIterator();
    int i =3D 0;
    while(iterator.hasNext()) {
      StringBuffer html =3D new StringBuffer();
      ImageMapArea imageMapArea=3D (ImageMapArea) iterator.next();
      html.append("alt=3D\"" + imageMapArea.getLengendLabel() + "\"");
      html.append(" href=3D\"" + pages_e[i++] + "\"");
      ebuf.append(imageMapArea.toHTML( html.toString()) + "\n");
    }
    ebuf.append("</map>\n");


    FileOutputStream fos =3D new =
FileOutputStream("journals/bsubs_e.jpg");
    JPEGEncoder.encode(p2d, 1.0f, fos);
    fos.flush();
    fos.close();





Regards,


Diane-Helene

_______________________________________________________

Diane-H=E9l=E8ne Caouette
613-993-9123
dia...@nr...=20
Electronic Document Delivery Technical Support
CISTI
National Research Council, Building M-55
1200 Montreal Road
Ottawa, ON K1A 0S2
Government of Canada

613-993-9123
dia...@nr...=20
Support technique =E0 la fourniture =E9lectronique de documents
ICIST
Conseil National de Recherches Canada
1200 rue Montr=E9al
Ottawa, ON K1A 0S2
Gouvernement du Canada
_______________________________________________________

RE: [jCharts-users] Help

[Chris M. <ch...@de...>]

Yes, you're dead right that text string is rendered as an image. I guess =
you
could make an argument to enhance jCharts to produce an imagemap for the
legend as well as for the graph.

Or you could just ask jCharts to not produce a legend and create it in =
HTML
instead.

C

> -----Original Message-----
> From: jch...@li...=20
> [mailto:jch...@li...] On Behalf=20
> Of Travis Reeder
> Sent: Tuesday, 22 February 2005 1:15 p.m.
> To: jch...@li...
> Subject: Re: [jCharts-users] Help
>=20
> That definitely wouldn't work, you can't embed a link inside=20
> the text of an image. It's an image not html.
>=20
> Travis
>=20
>=20
> On Tue, 22 Feb 2005 13:12:09 +1300, Chris McKay=20
> <ch...@de...> wrote:
> > =20
> > Without trying this myself couldn't you just put links into=20
> the labels?=20
> >  =20
> > So instead of something like:=20
> >  =20
> >   String[] labels =3D {"Equities", "Bonds", "Money Market",=20
> "Alternative=20
> > Investments"};
> >  =20
> > you'd have
> >  =20
> > =20
> >   String[] labels =3D {"<a href=3Dequities.html>Equities</a>", =
"Bonds",=20
> > "Money Market", "Alternative Investments"};
> >  =20
> > But I can see why you would want to just add the links once=20
> (whereever=20
> > you stick them so the ImageMap works.)
> >  =20
> > C
> > =20
> > =20
> > =20
> >  ________________________________
> >  From: jch...@li...
> > [mailto:jch...@li...] On Behalf Of=20
> > "Caouette, Diane-H=E9l=E8ne"
> > Sent: Tuesday, 22 February 2005 11:49 a.m.
> > To: 'jch...@li...'
> > Subject: [jCharts-users] Help
> >=20
> > =20
> >=20
> >=20
> > =20
> >=20
> > I am trying to find a way of clicking on subject categories=20
> underneath=20
> > a pie chart in order to
> >=20
> > get to the subcategories indicated by the colors of the pie chart.=20
> >=20
> > http://source.cisti-icist.nrc-cnrc.gc.ca/cs/journals/subjects_e.html
> >=20
> > At the moment, one has to click on the different colors of the pie=20
> > chart in order to go to the subcategories.
> >=20
> > If someone is colour blind, it would help to use the text=20
> underneath=20
> > the pie chart in order to go to the subcategories.
> >=20
> > How do I do that?=20
> > =20
> >=20
> > Regards,
> > =20
> >=20
> > Diane-Helene
>=20
>=20
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide Read honest &=20
> candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now.
> http://ads.osdn.com/?ad_ide95&alloc_id=14396&op=CCk
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users
>=20
>=20

Re: [jCharts-users] Help

[Travis R. <tr...@gm...>]

That definitely wouldn't work, you can't embed a link inside the text
of an image. It's an image not html.

Travis


On Tue, 22 Feb 2005 13:12:09 +1300, Chris McKay <ch...@de...> wrot=
e:
> =20
> Without trying this myself couldn't you just put links into the labels?=
=20
>  =20
> So instead of something like:=20
>  =20
>   String[] labels =3D {"Equities", "Bonds", "Money Market", "Alternative
> Investments"};=20
>  =20
> you'd have=20
>  =20
> =20
>   String[] labels =3D {"<a href=3Dequities.html>Equities</a>", "Bonds", "=
Money
> Market", "Alternative Investments"};=20
>  =20
> But I can see why you would want to just add the links once (whereever yo=
u
> stick them so the ImageMap works.)=20
>  =20
> C=20
> =20
> =20
> =20
>  ________________________________
>  From: jch...@li...
> [mailto:jch...@li...] On Behalf Of "Caouette=
,
> Diane-H=E9l=E8ne"
> Sent: Tuesday, 22 February 2005 11:49 a.m.
> To: 'jch...@li...'
> Subject: [jCharts-users] Help
>=20
> =20
>=20
>=20
> =20
>=20
> I am trying to find a way of clicking on subject categories underneath a =
pie
> chart in order to=20
>=20
> get to the subcategories indicated by the colors of the pie chart.=20
>=20
> http://source.cisti-icist.nrc-cnrc.gc.ca/cs/journals/subjects_e.html=20
>=20
> At the moment, one has to click on the different colors of the pie chart =
in
> order to go to the subcategories.=20
>=20
> If someone is colour blind, it would help to use the text underneath the =
pie
> chart in order to go to the subcategories.=20
>=20
> How do I do that?=20
> =20
>=20
> Regards,=20
> =20
>=20
> Diane-Helene

RE: [jCharts-users] Help

[Chris M. <ch...@de...>]

Without trying this myself couldn't you just put links into the labels?
=20
So instead of something like:
=20
  String[] labels =3D {"Equities", "Bonds", "Money Market", "Alternative
Investments"};
=20
you'd have
=20
  String[] labels =3D {"<a href=3Dequities.html>Equities</a>", "Bonds", =
"Money
Market", "Alternative Investments"};
=20
But I can see why you would want to just add the links once (whereever =
you
stick them so the ImageMap works.)
=20
C
=20


  _____ =20

From: jch...@li...
[mailto:jch...@li...] On Behalf Of =
"Caouette,
Diane-H=E9l=E8ne"
Sent: Tuesday, 22 February 2005 11:49 a.m.
To: 'jch...@li...'
Subject: [jCharts-users] Help





I am trying to find a way of clicking on subject categories underneath a =
pie
chart in order to=20

get to the subcategories indicated by the colors of the pie chart.=20

http://source.cisti-icist.nrc-cnrc.gc.ca/cs/journals/subjects_e.html=20

At the moment, one has to click on the different colors of the pie chart =
in
order to go to the subcategories.=20

If someone is colour blind, it would help to use the text underneath the =
pie
chart in order to go to the subcategories.=20

How do I do that?=20


Regards,=20


Diane-Helene=20

[jCharts-users] Help

[<Dia...@nr...>]

I am trying to find a way of clicking on subject categories underneath =
a pie
chart in order to=20

get to the subcategories indicated by the colors of the pie chart.

http://source.cisti-icist.nrc-cnrc.gc.ca/cs/journals/subjects_e.html

At the moment, one has to click on the different colors of the pie =
chart in
order to go to the subcategories.

If someone is colour blind, it would help to use the text underneath =
the pie
chart in order to go to the subcategories.

How do I do that?


Regards,


Diane-Helene

_______________________________________________________

Diane-H=E9l=E8ne Caouette
613-993-9123
dia...@nr...=20
Electronic Document Delivery Technical Support
CISTI
National Research Council, Building M-55
1200 Montreal Road
Ottawa, ON K1A 0S2
Government of Canada

613-993-9123
dia...@nr...=20
Support technique =E0 la fourniture =E9lectronique de documents
ICIST
Conseil National de Recherches Canada
1200 rue Montr=E9al
Ottawa, ON K1A 0S2
Gouvernement du Canada
_______________________________________________________

[jCharts-users] line chart

[Uder Z. <ude...@gm...>]

hello i have a few question
1.how can i make i generate 2 line graph using 2 set of different data size?
2.how can i set the line color?
3.how can i scale the x axis label?
4.how can i start my graph from point (0,0) / the first point is on the Y axis?
5.is this project dead already?

[jCharts-users] Does LegendAreaProperties.COLUMNS_AS_MANY_AS_NEEDED and COLUMNS_FIT_TO_IMAGE work?

[Chris W. <cw...@go...>]

Does LegendAreaProperties.COLUMNS_AS_MANY_AS_NEEDED and 
COLUMNS_FIT_TO_IMAGE work? If so, how? I tried to put them into legend 
properties like this:

legendProperties.setPlacement( LegendAreaProperties.LEFT );
legendProperties.setNumColumns(LegendAreaProperties.COLUMNS_AS_MANY_AS_NEEDED 
);

I did this with an axis graph, but get no legend at all. Are they coded for?

Chris

[jCharts-users] line graph w/ selected labels and tick marks

[Silas Boyd-W. <si...@gm...>]

Hi -

I want to create a line graph that only displays certain labels and
tick marks on the x-axis.  For example, if I had the below data set
and code and I only want to display lable and tick marks for 1, 3, 5
and 7 how could I do it?

String[] xAxisLabels= { "1", "2", "3", "4", "5", "6", "7"};
DataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle,
yAxisTitle, title );

double[][] data= new double[][]{ { 250, 45, -36, 66, 145, 80, 55  } };

...
...
...
		 
axisProperties.getXAxisProperties().setShowTicks(
AxisTypeProperties.TICKS_ONLY_WITH_LABELS );

// null is for no legend 
axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,
null, defWidth, defHeight );

I tried populating the xAxisLabels with empty string, but I get "Zero
length string passed to TextLayout constructor." when I try to render
the graph.

Thanks - Silas

[jCharts-users] how do you avoid legends in axisChartDataSet()

[apchar b. <ap...@ly...>]

I want to create a linechart without a legend. The javadocs say=20
just pass null to axisChartDataSet() where the legends array would=20
go. It compiles fine but when I run it (in appletviewer) I get

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

and the applet plots nothing.

The line in question is

AxisChartDataSet axisChartDataSet=3D new AxisChartDataSet( data, null, pain=
ts, ChartType.LINE, lineChartProperties );

What did I do wrong?
Thanks,
Apchar.

--=20
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[jCharts-users] Switched from jCharts.0.7.5 to krysalis-jCharts-1.0.0-alpha-1

[Jiang, X. <jon...@pi...>]

Hi,

I just switched from jCharts.0.7.5 to krysalis-jCharts-1.0.0-alpha-1. My ap=
p builds fine, but got a run-time error as follows:

Warning: legend shape is null
java.lang.NullPointerException
        at org.krysalis.jcharts.Legend.calculateDrawingValues(Unknown Sourc=
e)
        at org.krysalis.jcharts.Legend.computeLegendXY(Unknown Source)
        at org.krysalis.jcharts.axisChart.AxisChart.renderChart(Unknown Sou=
rce)
        at org.krysalis.jcharts.Chart.render(Unknown Source)
        ...

I didn't make any change to my source code. What else should I do?=20
Here's my source code:

    /**
     * Plot the time series data as line chart.=20
     */
    public int plot() throws ChartDataException, PropertyException {
        ...
        String xAxisTitle=3D null, yAxisTitle=3D null;
        dataSeries =3D new DataSeries( xAxisLabels, xAxisTitle, yAxisTitle,=
 getChartTitle() );
        LineChartProperties lineChartProperties=3D new LineChartProperties(=
 strokes, shapes );

        AxisChartDataSet axisChartDataSet =3D new AxisChartDataSet(data,leg=
endLabels,paints,ChartType.LINE,lineChartProperties);
        dataSeries.addIAxisPlotDataSet(axisChartDataSet);

        chartProperties=3D new ChartProperties();
        axisProperties=3D new AxisProperties();
        legendProperties=3D new LegendProperties();
        ChartStroke xAxisGridLines=3D new ChartStroke( new BasicStroke( 1.0=
f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND,1f,new float[] {2f},0f ),Col=
or.lightGray);
        axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGr=
idLines );
        axisProperties.getXAxisProperties().setShowGridLines( AxisTypePrope=
rties.GRID_LINES_ONLY_WITH_LABELS );

        DataAxisProperties yAxis =3D (DataAxisProperties) axisProperties.ge=
tYAxisProperties();
        yAxis.setGridLineChartStroke( xAxisGridLines );
        yAxis.setShowGridLines( AxisTypeProperties.GRID_LINES_ONLY_WITH_LAB=
ELS );
        yAxis.setNumItems(yNumItems);
        yAxis.setRoundToNearest(roundToNearest);

        UserDefinedScaleCalculator u=3D new UserDefinedScaleCalculator(yMin=
, yIncrement);
        yAxis.setScaleCalculator( u );

        yAxisMinWidth =3D getYLabelMinWidth(yAxis);

        //repaint();

        return PTError.PMPT_ERROR_SUCCESS;
    }

    public void paint(Graphics g) {
            Graphics plotGraphics =3D g.create(yAxisOffset,0,dim.width-yAxi=
sOffset,dim.height);
            try {
                Graphics2D g2d =3D (Graphics2D) plotGraphics;
                AxisChart axisChart=3D new AxisChart(dataSeries,=20
                                                   chartProperties,=20
                                                   axisProperties,=20
                                                   legendProperties, dim.wi=
dth-yAxisOffset, dim.height );              =20
                axisChart.setGraphics2D(g2d);
                axisChart.render();
            }
            catch( ChartDataException chartDataException )
            {
                chartDataException.printStackTrace();
            }
            catch( PropertyException propertyException ) {
                propertyException.printStackTrace();
            }
    }


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