jcharts-users — For users of jCharts

[jCharts-users] Cant we put data dynamically in to arrays while working with JCharts??????

[Sreemannarayana <sp...@os...>]

I am working with simple Bar charts, JSP, Tomcat.=20
I am passing the data of type "Double[][]" from Jsp-page-1 jsp-page-2
through "Session".
In jsp-page-2, I have written code for bar graph.
So in jsp-page-2 I am taking the data (of type Double[][]) from session
and putting in to an array of type "double[][]".=20
=20
// Double[][] m_tmpdata , this passed through session.
double[][] m_data =3D new double[m_tmpdata.length][m_tmpdata[0].length];
for(int i=3D0; i<m_tmpdata.length; i++)
{
            for(int j=3D0; j<m_tmpdata[0].length; j++)
            {
                        m_data[i][j]=3Dm_tmpdata[i][j].doubleValue();
            }
}
=20
 Paint[] m_paints =3D TestDataGenerator.getRandomPaints(1) // since its
simple bar charts.
=20
 The above code is not working.
 It=92s giving exception like:=20
     "There is not an one to one mapping of "Paint" implementation to
"data sets".
=20
     Why am I getting this problem.?????
=20
     If I write the code like as follows its working fine:
=20
 Double [][] m_data =3D {{m_tmpdata[0][0].doubleValue(),
m_tmpdata[1][0].doubleValue()}};
=20
=20
Please Help me.
=20
Thanks and regards.

[jCharts-users] Re: [jCharts-developers] Bug in User Guide

[Nathaniel G. A. <nat...@ya...>]

--- Vikram Rajan <vr...@st...> wrote:
> In some examples in the user there is a reference to a class 'AxisCharts'
> and its two members 'width' and 'height'. This class seems to be
> non-existent. Is this from an older version of jCharts?
> 
> The user guide will need to be updated for the same.
> 
> Vikram
> 

I added a task for the next UserGuide release to look at this. Thanks for spotting it.


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[jCharts-users] Bug in User Guide

[Vikram R. <vr...@st...>]

In some examples in the user there is a reference to a class 'AxisCharts'
and its two members 'width' and 'height'. This class seems to be
non-existent. Is this from an older version of jCharts?

The user guide will need to be updated for the same.

Vikram

[jCharts-users] Bug in User Guide

[Vikram R. <vr...@st...>]

In some examples in the user there is a reference to a class 'AxisCharts'
and its two members 'width' and 'height'. This class seems to be
non-existent. Is this from an older version of jCharts?

The user guide will need to be updated for the same.

Vikram

----- Original Message -----
From: "Nathaniel G. Auvil" <nat...@ya...>
To: "Vikram Rajan" <vr...@st...>; "jCharts User List"
<jch...@li...>
Cc: "Developers jCharts" <jch...@li...>
Sent: Friday, April 18, 2003 5:39 PM
Subject: Re: [jCharts-users] Dependency on JDK 1.4


>
> Yeah, we should remove these and keep the src runnable under 1.3
>
> There is code in there which requires 1.4.x to compile though.  The image
encoders use jdk 1.4.x
> specific code.  But you can still run with 1.2 or 1.3 if you use the xxx13
encoder.
>
>
>
>
> --- Vikram Rajan <vr...@st...> wrote:
> > There are portions of code which are dependent on JDK 1.4 but have not
been documented in the
> > javadocs. I found this when I was implementing the unfinished
usePercentSigns in the AxisChart
> > class.
> >
> > The places in the code which I found to be 1.4 dependent are:
> >
> > Legend.java (line 238) - Boolean.valueOf(boolean) is not implemented in
JDK 1.3
> > ------------ this.fillPointsFlags.add( Boolean.valueOf(
pointChartProperties.getFillPointsFlag(
> > i ) ) );
> >
> > ChartDataException.java (line 53) - The Exception constructor used is
specific to JDK 1.4
> > ------------ super( message, throwable );
> >
> > BarChartProperties.java (line 102) - Boolean.toString() is not
implemented in jdk 1.3
> > ------------ htmlGenerator.addTableRow( "Show Outlines",
Boolean.toString( this.showOutlines )
> > );
> >
> > I think these should be documented as such. If possible be changed to be
JDK 1.3 compatible. All
> > of these can be changed slightly make them so (except the
ChartDataException constructor, I dont
> > know how critical constructing an exception in that fashion is).
> >
> > - Vikram
>
>
> =====
>
>
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[jCharts-users] Re: [jCharts-developers] Charts written in JSP's Question

[Nathaniel G. A. <nat...@ya...>]

--- Dan Choi <cho...@ho...> wrote:
> I've noticed that it is possible to create a chart using a JSP and have 
> created one myself that way.  The reason being is I didn't want the chart to 
> appear in a new window (like a Servlet does), but appear in my navigation 
> frame.  This typically works, like in the example you provided in the online 
> guide, but it doesn't work when you have already used a JSP to draw the 
> navigation.  Because my JSP has already called the getWriter() method, when 
> the getOutputStream() method is called by ServletEncoderHelper it throws an 
> IllegalStateException.
> 

yes. Generating charts directly from a JSP is generally not a good idea because of this.  If you
leave a space on the end of a line you will get an error as the outputStream has already been
committed.

A servlet does not have to appear in a new window.  Simply place an <img src="myChartServlet">
where you want your chart to appear.


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Re: [jCharts-users] Displaying X Axis Labels

[Nathaniel G. A. <nat...@ya...>]

<quote>
Hello,I downloaded jCharts-0.7.0 a few days ago. 
<quote>

Good move! 0.7.2 is that latest release, which contains a couple of bug fixes since 0.7.0


<quote>
I am trying to display a Bar Chart from a servlet. In the sample code the xAxs Labels are
hardcoded as follows: String[] xAxisLabels= { "1998", "1999", "2000", "2001", "2002", "2003",
"2004" }; I need to extract these x axis lebel values at runtime from a database and have been
passing the values as follows:String[] s = (String[] ) v.toArray ( new String[v.size()] );  where
v is a Vector containing string values. The string array s is then passed into the IAxisDataSeried
constructor as follows:IAxisDataSeries dataSeries = new DataSeries( s, xAxisTitle, yAxisTitle,
title ); This does not appear to work. Sometimes only the first and third x axis label are
printed. Is there a maximum length for these labels ? 
<quote>

THe jCharts code will not allow the axis labels to overlap.  Perhaps you could make the labels
vertical? Or you would have to increase the width of your chart image to allow for more space.






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[jCharts-users] Displaying X Axis Labels

[Anthony H. <har...@ho...>]

<html><div style='background-color:'><DIV>Hello,</DIV>
<DIV>I downloaded jCharts-0.7.0 a few days ago. I am trying to display a Bar Chart from a servlet. In the sample code the xAxs Labels are hardcoded as follows:&nbsp;</DIV>
<DIV><STRONG>String[] xAxisLabels= { "1998", "1999", "2000", "2001", "2002", "2003", "2004" };</STRONG></DIV>
<DIV>&nbsp;</DIV>
<DIV>I need to extract these x axis lebel values at runtime from a database and have been passing the values as follows:</DIV>
<DIV><STRONG><FONT size=2>String[] s = (String[] ) v.toArray ( </FONT><FONT color=#7f0055 size=2>new</FONT></STRONG><FONT size=2><STRONG> String[v.size()] );&nbsp; </STRONG>where v is a Vector containing string values. The string array <STRONG>s </STRONG>is then passed into the IAxisDataSeried constructor as follows:</FONT></DIV>
<DIV><STRONG><FONT size=2><FONT size=2>IAxisDataSeries dataSeries = </FONT><B><FONT color=#7f0055 size=2>new</B></FONT><FONT size=2> DataSeries( s, xAxisTitle, yAxisTitle, title );</FONT></FONT></STRONG></DIV>
<DIV><STRONG><FONT size=2><FONT size=2></FONT></FONT></STRONG>&nbsp;</DIV>
<DIV><FONT size=2><FONT size=2>This does not appear to work. Sometimes only the first and third x axis label are printed. Is there a maximum length for these labels ? Or is there a problem with passing in a Strting array in this fashion ?</FONT></FONT></DIV>
<DIV><FONT size=2><FONT size=2>Any help would be appreciated.</FONT></FONT></DIV>
<DIV><FONT size=2><FONT size=2>Regards,</FONT></FONT></DIV>
<DIV><FONT size=2><FONT size=2>Anthony Harrington.</DIV></FONT></FONT><BR></div><br clear=all><hr>MSN 8 helps <a href="http://g.msn.com/8HMZEN/2743">ELIMINATE E-MAIL VIRUSES. </a> Get 2 months FREE*.</html>

Re: [jCharts-users] use jcharts in AIX

[Nathaniel G. A. <nat...@ya...>]

What kind of problem are you having?


--- Tingting Zou <zou...@ya...> wrote:
> Hello everyone,
> 
> Does anybody encounter problems of using jcharts in
> AIX? Or anybody has any tips to share? 
> 
> Thanks,
> 


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[jCharts-users] use jcharts in AIX

[Tingting Z. <zou...@ya...>]

Hello everyone,

Does anybody encounter problems of using jcharts in
AIX? Or anybody has any tips to share? 

Thanks,

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[jCharts-users] Re: jCharts question

[Nathaniel G. A. <nat...@ya...>]

--- Jybo <jy...@fr...> wrote:
> Hi,
> 
> I'm using AxisCharts like in your examples but I do not have the same thing.
> In the good case, there is a shifted begining and all the years appears 
> (including 2004)
> in the second, there is no shifted begining and the last Xlabel doesn't 
> appear (no 2004 year)
> 
> I'm using the same code, excepting for the values and the number of lines.
> Do you know what is the problem ??
> 

A lot of people wanted the plots to no be offset and start at the y-axis. This functionality was
meant for the next release, but inadvertantly got added to the 0.7 codebase.  Perhaps we could
include a user defineable property of whether to offset it or start the plot at the y-axis.

The last label does not display as it would go off the edge of the image.  You could increase the
edge padding of the chart properties object to give more space, or make the labels vertical.

The samples on the web site need to be updated.  I will take a look at them tonight.


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Re: [jCharts-users] Legends with titles

[Nathaniel G. A. <nat...@ya...>]

Not right now. I will add this to the todo list for the next release.


--- fra...@ag... wrote:
> Hi,
> 
> Is there any way of adding a title to the legends?
> 
> Thanks,
> 
> Francisco
> Agilent Technologies
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
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> http://thinkgeek.com/sf
> _______________________________________________
> jCharts-users mailing list
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> https://lists.sourceforge.net/lists/listinfo/jcharts-users


=====


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[jCharts-users] Legends with titles

[<fra...@ag...>]

Hi,

Is there any way of adding a title to the legends?

Thanks,

Francisco
Agilent Technologies

Re: [jCharts-users] Source_from_example_"Horizontal_Stacked_Bar"

[Nathaniel G. A. <nat...@ya...>]

there is code in the users guide. Just uncomment the call to the AxisProperties constructor to
make it horizontal.


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

double[][] data= new double[][]{ { 250, 45, 36, 66, 145, 80, 55 }, { 150, 15, 6, 62, 54, 10, 84 },
{ 250, 45, 36, 66, 145, 80, 55 } };
String[] legendLabels= { "Bugs", "Security Holes", "Backdoors" };
Paint[] paints= TestDataGenerator.getRandomPaints( 3 );
StackedBarChartProperties stackedBarChartProperties= new StackedBarChartProperties();
AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data, legendLabels, paints,
ChartType.BAR_STACKED, stackedBarChartProperties );
dataSeries.addIAxisPlotDataSet( axisChartDataSet );

ChartProperties chartProperties= new ChartProperties();

//---to make this plot horizontally, pass true to the AxisProperties Constructor
//AxisProperties axisProperties= new AxisProperties( true );
AxisProperties axisProperties= new AxisProperties();
LegendProperties legendProperties= new LegendProperties();
AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties, legendProperties,
AxisCharts.width, AxisCharts.height );




--- "ssa...@ti..." <ssa...@ti...> wrote:
> Hello,
> I'm new in the place and i would like to know if It is possible to have the entire source code
> of the example "Horizontal Stacked Bar" at jcharts.sourceforge.net. It's exactly what i need (i
> have to to a population pyramid) but i'm really  newbie and it's too hard for me (for instance)
> ...
> 
> ************ VITE, C'EST LE MOMENT DE VOUS ABONNER A L'ADSL !!! **********
> Du 3 avril au 5 mai, série limitée ADSL 128K, cliquez vite ici :
> http://register.tiscali.fr/adsl/ 
> Offre promotionnelle soumise à conditions, réservée aux nouveaux abonnés ADSL Tiscali.
> 
> 
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users


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[jCharts-users] =?iso-8859-1?Q?Source_from_example_=22Horizontal_Stacked_Bar=22?=

[=?iso-8859-1?Q?<ssa...@ti...>]

Hello,=0D=0AI'm new in the place and i would like to know if It is possib=
le to have the entire source code of the example "Horizontal Stacked Bar"=
 at jcharts.sourceforge.net. It's exactly what i need (i have to to a pop=
ulation pyramid) but i'm really  newbie and it's too hard for me (for ins=
tance) ...=0A=0A************ VITE, C'EST LE MOMENT DE VOUS ABONNER A L'AD=
SL !!! **********=0ADu 3 avril au 5 mai, s=E9rie limit=E9e ADSL 128K, cli=
quez vite ici : http://register.tiscali.fr/adsl/ =0AOffre promotionnelle =
soumise =E0 conditions, r=E9serv=E9e aux nouveaux abonn=E9s ADSL Tiscali.=
=0A

[jCharts-users] jCharts 0.7.2 has been released!

[Nathaniel G. A. <nat...@ya...>]

jCharts 0.7.2 has been released!

* Smaller download due to removal of uneeded libs from Servlet Examples!
* JDK 1.4 dependent code removed from BarChartProperties, ChartDataException and Legend.  
* added an Ant target: compile13, which compiles using jdk 1.3. Be aware of the excludes in this
task. This helps to keep the JDK 1.4 dependencies isolated to the encoders package and the test
packages.  
* Percentage display on Numeric Axis now works. Be aware, Java's NumberFormat Object will multiply
your value by 100 before displaying it in your locale specific percent. 



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[jCharts-users] updates

[Nathaniel G. A. <nat...@ya...>]

i checked into cvs the following changes:
1) removed runntime dependencies on jdk 1.4 in all(3) places except for the encoders specific to
1.4
2) enabled the display Percentages feature.  Be aware javas NumberFormat multiplies values by 100
when it displays them rather than appending a locale specific percentage sign.

thanks to Vikram for pointing these flaws out.

There will be a release later today to include these.

=====


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Re: [jCharts-users] Dependency on JDK 1.4

[Vikram R. <vr...@st...>]

yes, I am aware of the encoders dependency on 1.4 which is fine really.

Do you have a concrete plan to make the source 1.3 compatible. Some
timelines would be helpful. In the meanwhile, can I just go ahead and make
changes in the source and use it for my purpose? Are there any do's and
dont's there? I can mail the changes to the developers list if required.

Also, I think it would be a nice idea to create two separate build targets -
one for JDK 1.3 and one for JDK 1.4.

If resources are a problem, let me know how I can help out the project team
on this one. I like jCharts and I would like to contribute my two cents to
it.

thanks,
Vikram

----- Original Message -----
From: "Nathaniel G. Auvil" <nat...@ya...>
To: "Vikram Rajan" <vr...@st...>; "jCharts User List"
<jch...@li...>
Cc: "Developers jCharts" <jch...@li...>
Sent: Friday, April 18, 2003 6:09 AM
Subject: Re: [jCharts-users] Dependency on JDK 1.4


>
> Yeah, we should remove these and keep the src runnable under 1.3
>
> There is code in there which requires 1.4.x to compile though.  The image
encoders use jdk 1.4.x
> specific code.  But you can still run with 1.2 or 1.3 if you use the xxx13
encoder.
>
>
>
>
> --- Vikram Rajan <vr...@st...> wrote:
> > There are portions of code which are dependent on JDK 1.4 but have not
been documented in the
> > javadocs. I found this when I was implementing the unfinished
usePercentSigns in the AxisChart
> > class.
> >
> > The places in the code which I found to be 1.4 dependent are:
> >
> > Legend.java (line 238) - Boolean.valueOf(boolean) is not implemented in
JDK 1.3
> > ------------ this.fillPointsFlags.add( Boolean.valueOf(
pointChartProperties.getFillPointsFlag(
> > i ) ) );
> >
> > ChartDataException.java (line 53) - The Exception constructor used is
specific to JDK 1.4
> > ------------ super( message, throwable );
> >
> > BarChartProperties.java (line 102) - Boolean.toString() is not
implemented in jdk 1.3
> > ------------ htmlGenerator.addTableRow( "Show Outlines",
Boolean.toString( this.showOutlines )
> > );
> >
> > I think these should be documented as such. If possible be changed to be
JDK 1.3 compatible. All
> > of these can be changed slightly make them so (except the
ChartDataException constructor, I dont
> > know how critical constructing an exception in that fashion is).
> >
> > - Vikram
>
>
> =====
>
>
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RE: [jCharts-users] Question on Pie Charts: How to display "n" Pie Charts???

[Nathaniel G. A. <nat...@ya...>]

>     Thank you for your quick reply. But this hasn't solved my problem.
> 
> I have to display "n" no.of Piecharts  and "n" no.of BarGraphs in Same JSP
> page.
> I have different data sets.
> 
> while creating bare charts,
> Each time Iam getting "AxisChart" object and passing that to
> JPEGEncoder13.encode() as follows.

a piechart != axischart so that is a problem.



> 
>   <%img border="0" src="<%JPEGEncoder13.encode(m_axisChart,1.0f,response);
> %>"

this actually renders a chart in the browser?

As an example, if you wanted 4 charts you would need something like this:

<img border="0" src="myPieChartServlet?key=1">
<img border="0" src="myPieChartServlet?key=2">
<img border="0" src="myPieChartServlet?key=3">
<img border="0" src="myBarChart?key=1">

You need a request for each image that has a 'key' so it knows what dataset to render.



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Re: [jCharts-users] Dependency on JDK 1.4

[Nathaniel G. A. <nat...@ya...>]

Yeah, we should remove these and keep the src runnable under 1.3

There is code in there which requires 1.4.x to compile though.  The image encoders use jdk 1.4.x
specific code.  But you can still run with 1.2 or 1.3 if you use the xxx13 encoder.




--- Vikram Rajan <vr...@st...> wrote:
> There are portions of code which are dependent on JDK 1.4 but have not been documented in the
> javadocs. I found this when I was implementing the unfinished usePercentSigns in the AxisChart
> class.
> 
> The places in the code which I found to be 1.4 dependent are:
> 
> Legend.java (line 238) - Boolean.valueOf(boolean) is not implemented in JDK 1.3
> ------------ this.fillPointsFlags.add( Boolean.valueOf( pointChartProperties.getFillPointsFlag(
> i ) ) );
> 
> ChartDataException.java (line 53) - The Exception constructor used is specific to JDK 1.4
> ------------ super( message, throwable );
> 
> BarChartProperties.java (line 102) - Boolean.toString() is not implemented in jdk 1.3
> ------------ htmlGenerator.addTableRow( "Show Outlines", Boolean.toString( this.showOutlines )
> );
> 
> I think these should be documented as such. If possible be changed to be JDK 1.3 compatible. All
> of these can be changed slightly make them so (except the ChartDataException constructor, I dont
> know how critical constructing an exception in that fashion is).
> 
> - Vikram


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Re: [jCharts-users] Question on Pie Charts: How to display "n" Pie Charts???

[Nathaniel G. A. <nat...@ya...>]

i assume there will be unique data in each chart. So somehow you will have a 'key' to get each
data set.  Have your JSP, create an <img> tag for each key and append it onto the img 'src'
parameter.  Then you Servlet could use the key to return a chart with that dataset.





--- Sreemannarayana <sp...@os...> wrote:
> Hi
> 
>    Iam working with Jcharts. Iam using Tomcat, JCharts, JSP and Struts.
> 
> I have to display "n" no.of Pie charts in same jsp page. 
> At runtime only I will be knowing howmany Pie charts I have to disply.
> Is there any solution?
> 
> Please Help. Its urgent
> 
> S.Paturi
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
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> _______________________________________________
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[jCharts-users] Question on Pie Charts: How to display "n" Pie Charts???

[Sreemannarayana <sp...@os...>]

Hi

   Iam working with Jcharts. Iam using Tomcat, JCharts, JSP and Struts.

I have to display "n" no.of Pie charts in same jsp page. 
At runtime only I will be knowing howmany Pie charts I have to disply.
Is there any solution?

Please Help. Its urgent

S.Paturi

[jCharts-users] Please help needed

[Sreemannarayana <sp...@os...>]

Hi

   Iam working with Jcharts. Iam using Tomcat, JCharts, JSP, Struts.

I have to display "n" no.of Pie charts in same jsp page. 
At runtime only I will be knowing howmany Pie charts I have to disply.
Is there any solution?

S.Paturi

[jCharts-users] Dependency on JDK 1.4

[Vikram R. <vr...@st...>]

There are portions of code which are dependent on JDK 1.4 but have not =
been documented in the javadocs. I found this when I was implementing =
the unfinished usePercentSigns in the AxisChart class.

The places in the code which I found to be 1.4 dependent are:

Legend.java (line 238) - Boolean.valueOf(boolean) is not implemented in =
JDK 1.3
------------ this.fillPointsFlags.add( Boolean.valueOf( =
pointChartProperties.getFillPointsFlag( i ) ) );

ChartDataException.java (line 53) - The Exception constructor used is =
specific to JDK 1.4
------------ super( message, throwable );

BarChartProperties.java (line 102) - Boolean.toString() is not =
implemented in jdk 1.3
------------ htmlGenerator.addTableRow( "Show Outlines", =
Boolean.toString( this.showOutlines ) );

I think these should be documented as such. If possible be changed to be =
JDK 1.3 compatible. All of these can be changed slightly make them so =
(except the ChartDataException constructor, I dont know how critical =
constructing an exception in that fashion is).

- Vikram

Re: [jCharts-users] problem with using setUsePercentSigns()

[Nathaniel G. A. <nat...@ya...>]

yes, this does not work.  That getter/setter should have been commented out.  But, I will take a
look at the code tonight to see if I can get something to work since it is in there.




--- Vikram Rajan <vr...@st...> wrote:
> I need to add a percentage sign next to all values on the Y Axis. For this I added the following
> bit of code:
> 
>         AxisProperties axisProperties= new AxisProperties();
>         axisProperties.getYAxisProperties().setShowGridLines(
> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS );
>         DataAxisProperties dataAxisProperties =
> (DataAxisProperties)axisProperties.getYAxisProperties();
>         dataAxisProperties.setUsePercentSigns(true);
> 
> But when I generate the chart using the JPEG encoder, the percentage signs are not rendered. It
> works (dollar signs are displayed) when I use the setUseDollarSigns() method. 
> 
> Is this a bug, or am I missing something?
> 
> thanks,
> Vikram


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[jCharts-users] problem with using setUsePercentSigns()

[Vikram R. <vr...@st...>]

I need to add a percentage sign next to all values on the Y Axis. For =
this I added the following bit of code:

        AxisProperties axisProperties=3D new AxisProperties();
        axisProperties.getYAxisProperties().setShowGridLines( =
AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS );
        DataAxisProperties dataAxisProperties =3D =
(DataAxisProperties)axisProperties.getYAxisProperties();
        dataAxisProperties.setUsePercentSigns(true);

But when I generate the chart using the JPEG encoder, the percentage =
signs are not rendered. It works (dollar signs are displayed) when I use =
the setUseDollarSigns() method.=20

Is this a bug, or am I missing something?

thanks,
Vikram