jcharts-users — For users of jCharts

Re: [jCharts-users] Having JChart Images in PDF through iText

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

i will look at this tonight.  If you want to look at it all the code is in PieChart2D to do the
other labelling so cutting and pasting for the single item should not be very hard.

If i check it into CVS, will you be able to check it out and build from the ant script?




--- Pal Perinbam <pal...@ya...> wrote:
> Middle will look good, but it might be a bit odd 'cos the labels always appear outside in other
> cases. I think top of the chart will maintain the uniformity. 
>  
> what do you think?
> 
> 
> "Nathaniel G. Auvil" <nat...@ya...> wrote:
> 
> How should the label be displayed when there is only one slice? In the middle of the chart?
> underneath? The side opposite the legend? I am not sure. I think i may lean towards the middle
> of the chart.
> 
> 
> --- Pal Perinbam 
> wrote:
> > It is very urgent for me. I got to present a demo tomorrow(15-05-2003).
> > What should I do for the time being that I get from you a fix for this?
> > Thank you.
> > 
> > Pal
> > 
> > "Nathaniel G. Auvil" wrote:
> > 
> > --- Pal Perinbam 
> > wrote:
> > > Hi,
> > > Thanks for the input.
> > > 
> > > For a pie chart if there is only one legend label, then the label doesn't appear on the
> chart.
> > > Why? Is there a way round to solve this issue?
> > 
> > 
> > That looks like a bug. How urgent is it to you?
> > 
> > The labelling code for Pie Charts was a first pass attempt and we are planning on enhancing it
> > in
> > the next release.
> > 
> > 
> > 
> > =====
> > http://nathaniel-auvil.blog-city.com/
> > 
> > __________________________________
> > Do you Yahoo!?
> > The New Yahoo! Search - Faster. Easier. Bingo.
> > http://search.yahoo.com
> > 
> > 
> > -------------------------------------------------------
> > Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara
> > The only event dedicated to issues related to Linux enterprise solutions
> > www.enterpriselinuxforum.com
> > 
> > _______________________________________________
> > jCharts-users mailing list
> > jCh...@li...
> > https://lists.sourceforge.net/lists/listinfo/jcharts-users
> > 
> > ---------------------------------
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> 
> 
> =====
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> 
> __________________________________
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> 
> 
> -------------------------------------------------------
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> The only event dedicated to issues related to Linux enterprise solutions
> www.enterpriselinuxforum.com
> 
> _______________________________________________
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> 
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Re: [jCharts-users] Having JChart Images in PDF through iText

[Pal P. <pal...@ya...>]

Middle will look good, but it might be a bit odd 'cos the labels always appear outside in other cases. I think top of the chart will maintain the uniformity. 
 
what do you think?


"Nathaniel G. Auvil" <nat...@ya...> wrote:

How should the label be displayed when there is only one slice? In the middle of the chart?
underneath? The side opposite the legend? I am not sure. I think i may lean towards the middle
of the chart.


--- Pal Perinbam 
wrote:
> It is very urgent for me. I got to present a demo tomorrow(15-05-2003).
> What should I do for the time being that I get from you a fix for this?
> Thank you.
> 
> Pal
> 
> "Nathaniel G. Auvil" wrote:
> 
> --- Pal Perinbam 
> wrote:
> > Hi,
> > Thanks for the input.
> > 
> > For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
> > Why? Is there a way round to solve this issue?
> 
> 
> That looks like a bug. How urgent is it to you?
> 
> The labelling code for Pie Charts was a first pass attempt and we are planning on enhancing it
> in
> the next release.
> 
> 
> 
> =====
> http://nathaniel-auvil.blog-city.com/
> 
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
> http://search.yahoo.com
> 
> 
> -------------------------------------------------------
> Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara
> The only event dedicated to issues related to Linux enterprise solutions
> www.enterpriselinuxforum.com
> 
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> 
> ---------------------------------
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-------------------------------------------------------
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The only event dedicated to issues related to Linux enterprise solutions
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_______________________________________________
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Re: [jCharts-users] Having JChart Images in PDF through iText

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

How should the label be displayed when there is only one slice?  In the middle of the chart?
underneath? The side opposite the legend?  I am not sure.  I think i may lean towards the middle
of the chart.


--- Pal Perinbam <pal...@ya...> wrote:
> It is very urgent for me. I got to present a demo tomorrow(15-05-2003).
> What should I do for the time being that I get from you a fix for this?
> Thank you.
>  
> Pal
> 
> "Nathaniel G. Auvil" <nat...@ya...> wrote:
> 
> --- Pal Perinbam 
> wrote:
> > Hi,
> > Thanks for the input.
> > 
> > For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
> > Why? Is there a way round to solve this issue?
> 
> 
> That looks like a bug. How urgent is it to you?
> 
> The labelling code for Pie Charts was a first pass attempt and we are planning on enhancing it
> in
> the next release.
> 
> 
> 
> =====
> http://nathaniel-auvil.blog-city.com/
> 
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
> http://search.yahoo.com
> 
> 
> -------------------------------------------------------
> Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara
> The only event dedicated to issues related to Linux enterprise solutions
> www.enterpriselinuxforum.com
> 
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> 
> ---------------------------------
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.


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[jCharts-users] Re: [jCharts-developers] Bug in percentage sign implementation?

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

I am not sure what you want?  If you set round to nearest 10 to the -2, you will get two decimal
places.  When using percent signs, remember you multiply the values by 100, so a value of .156 on
your axis is displayed as a percent is: 16.00%, as first the value is rounded to .16, then
converted to a percent.

Alls that code is doing is if you are rounding to a power greater than or equal to 10 ^ 0, we do
not show decimal places as they will always be zeroes.




--- Vikram Rajan <vr...@st...> wrote:
> If I use the dataAxisProperties.setUsePercentSigns() to set the percent signs on the data axis,
> I always get the format of the labels as 10.00%, 20.00%, which is not really what the developer
> would want in normal cases. I am using a user-defined scale here. A snapshot of the code ...
> 
>         DataAxisProperties dataAxisProperties = (DataAxisProperties)
> axisProperties.getYAxisProperties();
>         dataAxisProperties.setUsePercentSigns(true);
>         dataAxisProperties.setNumItems(20);
>         dataAxisProperties.setUserDefinedScale(0, 0.1);
>         dataAxisProperties.setRoundToNearest( -2 );
> 
> I looked into the code for the NumericTagGroup and found the lines that were causing it (lines
> 118 to 129). Reproduced the code below.
> 
>   //---TRIM OFF DECIMAL PLACES IF ROUND TO WHOLE NUMBER
>   if( roundingPowerOfTen >= 0 )
>   {
>    numberFormat.setMaximumFractionDigits( 0 );
>    numberFormat.setMinimumFractionDigits( 0 );
>   }
>   else
>   {
>    numberFormat.setMaximumFractionDigits( -roundingPowerOfTen );
>    numberFormat.setMinimumFractionDigits( -roundingPowerOfTen );
>   }
> 
> 
> What I suggest is that we change the minimum fraction digits to be zero when the rounding power
> of ten is less than zero. This will ensure that if the computed increment is a whole number, the
> data axis labels will not be displayed as fractions. Nathan, what do you think?
> 
> - Vikram Rajan
> 


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Re: [jCharts-users] Question on Image Maps

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

Did you look at what the call to: "imageMapArea.toHTML( html.toString() )" does? It does what you
want.  take a look at the javadocs and/or source for ImageMapArea.toHTML( String ) to see what it
does.



--- Vikram Rajan <vr...@st...> wrote:
> I looked through the image map sample bundled with the download.
> 
> It seems that the following code:
> 
> <%
> StringBuffer html= new StringBuffer( 100 );
> ImageMap imageMap= (ImageMap) request.getAttribute( ChartServlet.IMAGE_MAP );
> 
> Iterator iterator= imageMap.getIterator();
> while( iterator.hasNext() )
> {
>  ImageMapArea imageMapArea= (ImageMapArea) iterator.next();
>  
>  html.append( "href=\"javascript:showValues(" );
>  html.append( imageMapArea.getValue() );
>  html.append( ",'" );
>  html.append( imageMapArea.getLengendLabel() );
>  html.append( "','" );
>  html.append( imageMapArea.getXAxisLabel() );
>  html.append( "');\"" );
> %>
>  <%=  imageMapArea.toHTML( html.toString() ) %>
> <% 
>  //---reuse same StringBuffer Object
>  html.delete( 0, html.length() );
> } 
> %>
> 
> produces something like:
> 
> href="javascript:showValues(1500.0,'Bugs','1995');"
> href="javascript:showValues(6880.0,'Bugs','1996');"
> href="javascript:showValues(4510.0,'Bugs','1997');"
> href="javascript:showValues(2600.0,'Bugs','1998');"
> href="javascript:showValues(1200.0,'Bugs','1999');"
> href="javascript:showValues(1580.0,'Bugs','2000');"
> href="javascript:showValues(8000.0,'Bugs','2001');"
> href="javascript:showValues(4555.0,'Bugs','2002');"
> href="javascript:showValues(4000.0,'Bugs','2003');"
> href="javascript:showValues(6120.0,'Bugs','2004');"
> 
> But this is not the complete area tag. Is there some method that will let me get something like:
> 
> <area shape="rect" coords="20,20,60,60" href="javascript:showValues(6120.0,'Bugs','2004');">
> 
> The methods that would help in generating this seem to be protected or non-existent. Am I
> missing something?
> 
> - Vikram
> 
> 
> 


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[jCharts-users] Re: Question on Image Maps

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

Nathan, please reply to this one. If the image map implementation needs =
to be changed, I could then go ahead and do and share the code with you.

thanks
Vikram
  ----- Original Message -----=20
  From: Vikram Rajan=20
  To: jCharts User List=20
  Sent: Wednesday, May 07, 2003 2:51 PM
  Subject: Question on Image Maps


  I looked through the image map sample bundled with the download.

  It seems that the following code:

  <%
  StringBuffer html=3D new StringBuffer( 100 );
  ImageMap imageMap=3D (ImageMap) request.getAttribute( =
ChartServlet.IMAGE_MAP );

  Iterator iterator=3D imageMap.getIterator();
  while( iterator.hasNext() )
  {
   ImageMapArea imageMapArea=3D (ImageMapArea) iterator.next();
  =20
   html.append( "href=3D\"javascript:showValues(" );
   html.append( imageMapArea.getValue() );
   html.append( ",'" );
   html.append( imageMapArea.getLengendLabel() );
   html.append( "','" );
   html.append( imageMapArea.getXAxisLabel() );
   html.append( "');\"" );
  %>
   <%=3D  imageMapArea.toHTML( html.toString() ) %>
  <%=20
   //---reuse same StringBuffer Object
   html.delete( 0, html.length() );
  }=20
  %>

  produces something like:

  href=3D"javascript:showValues(1500.0,'Bugs','1995');"
  href=3D"javascript:showValues(6880.0,'Bugs','1996');"
  href=3D"javascript:showValues(4510.0,'Bugs','1997');"
  href=3D"javascript:showValues(2600.0,'Bugs','1998');"
  href=3D"javascript:showValues(1200.0,'Bugs','1999');"
  href=3D"javascript:showValues(1580.0,'Bugs','2000');"
  href=3D"javascript:showValues(8000.0,'Bugs','2001');"
  href=3D"javascript:showValues(4555.0,'Bugs','2002');"
  href=3D"javascript:showValues(4000.0,'Bugs','2003');"
  href=3D"javascript:showValues(6120.0,'Bugs','2004');"

  But this is not the complete area tag. Is there some method that will =
let me get something like:

  <area shape=3D"rect" coords=3D"20,20,60,60" =
href=3D"javascript:showValues(6120.0,'Bugs','2004');">

  The methods that would help in generating this seem to be protected or =
non-existent. Am I missing something?

  - Vikram

[jCharts-users] Bug in percentage sign implementation?

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

If I use the dataAxisProperties.setUsePercentSigns() to set the percent =
signs on the data axis, I always get the format of the labels as 10.00%, =
20.00%, which is not really what the developer would want in normal =
cases. I am using a user-defined scale here. A snapshot of the code ...

        DataAxisProperties dataAxisProperties =3D (DataAxisProperties) =
axisProperties.getYAxisProperties();
        dataAxisProperties.setUsePercentSigns(true);
        dataAxisProperties.setNumItems(20);
        dataAxisProperties.setUserDefinedScale(0, 0.1);
        dataAxisProperties.setRoundToNearest( -2 );

I looked into the code for the NumericTagGroup and found the lines that =
were causing it (lines 118 to 129). Reproduced the code below.

  //---TRIM OFF DECIMAL PLACES IF ROUND TO WHOLE NUMBER
  if( roundingPowerOfTen >=3D 0 )
  {
   numberFormat.setMaximumFractionDigits( 0 );
   numberFormat.setMinimumFractionDigits( 0 );
  }
  else
  {
   numberFormat.setMaximumFractionDigits( -roundingPowerOfTen );
   numberFormat.setMinimumFractionDigits( -roundingPowerOfTen );
  }


What I suggest is that we change the minimum fraction digits to be zero =
when the rounding power of ten is less than zero. This will ensure that =
if the computed increment is a whole number, the data axis labels will =
not be displayed as fractions. Nathan, what do you think?

- Vikram Rajan

Re: [jCharts-users] Having JChart Images in PDF through iText

[Pal P. <pal...@ya...>]

It is very urgent for me. I got to present a demo tomorrow(15-05-2003).
What should I do for the time being that I get from you a fix for this?
Thank you.
 
Pal

"Nathaniel G. Auvil" <nat...@ya...> wrote:

--- Pal Perinbam 
wrote:
> Hi,
> Thanks for the input.
> 
> For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
> Why? Is there a way round to solve this issue?


That looks like a bug. How urgent is it to you?

The labelling code for Pie Charts was a first pass attempt and we are planning on enhancing it in
the next release.



=====
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www.enterpriselinuxforum.com

_______________________________________________
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Re: [jCharts-users] Having JChart Images in PDF through iText

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

--- Pal Perinbam <pal...@ya...> wrote:
> Hi,
> Thanks for the input.
>  
> For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
> Why? Is there a way round to solve this issue?


That looks like a bug. How urgent is it to you?

The labelling code for Pie Charts was a first pass attempt and we are planning on enhancing it in
the next release.



=====
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Re: [jCharts-users] Having JChart Images in PDF through iText

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

cool.  I will add a task to make the flag on the ChartProperties Object.  Or would it make sense
to have the ability to toggle anti-aliasing per graphic component of the chart independently?



--- Pal Perinbam <pal...@ya...> wrote:
> Hi,
> Thanks for the input.
>  
> For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
> Why? Is there a way round to solve this issue?
>  
> Regarding the image, 1anti-aliasing is set to off and the image comes fine
>  
> Thanks and Regards,
> Pal
> 
> "Nathaniel G. Auvil" <nat...@ya...> wrote:
> 
> can you attach an image? Perhaps it is because anti-aliasing is on?
> 
> 
> 
> --- Pal Perinbam 
> wrote:
> > Hi All,How come I have my JCharts images in PDF using iText ?I know how to have images in PDF
> > using iText. But I want to have a maximum clarity of the images generated by JCharts. The
> images
> > that appear on PDF appear mostly blurred and faded. How could I overcome this? If I have high
> > quality images, then I don't foresee or find any problem in displaying of these images. How to
> > create high quality images in JCharts? Thanks and Regards,Pal
> > 
> > ---------------------------------
> > Do you Yahoo!?
> > The New Yahoo! Search - Faster. Easier. Bingo.
> 
> 
> =====
> http://nathaniel-auvil.blog-city.com/
> 
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
> http://search.yahoo.com
> 
> ---------------------------------
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Re: [jCharts-users] Having JChart Images in PDF through iText

[Pal P. <pal...@ya...>]

Hi,
Thanks for the input.
 
For a pie chart if there is only one legend label, then the label doesn't appear on the chart.
Why? Is there a way round to solve this issue?
 
Regarding the image, 1anti-aliasing is set to off and the image comes fine
 
Thanks and Regards,
Pal

"Nathaniel G. Auvil" <nat...@ya...> wrote:

can you attach an image? Perhaps it is because anti-aliasing is on?



--- Pal Perinbam 
wrote:
> Hi All,How come I have my JCharts images in PDF using iText ?I know how to have images in PDF
> using iText. But I want to have a maximum clarity of the images generated by JCharts. The images
> that appear on PDF appear mostly blurred and faded. How could I overcome this? If I have high
> quality images, then I don't foresee or find any problem in displaying of these images. How to
> create high quality images in JCharts? Thanks and Regards,Pal
> 
> ---------------------------------
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.


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Re: [jCharts-users] Having JChart Images in PDF through iText

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

can you attach an image? Perhaps it is because anti-aliasing is on?



--- Pal Perinbam <pal...@ya...> wrote:
> Hi All,How come I have my JCharts images in PDF using iText ?I  know how to have images in PDF
> using iText. But I want to have a maximum clarity of the images generated by JCharts. The images
> that appear on PDF appear mostly blurred and faded. How could I overcome this? If I have high
> quality images, then I don't foresee or find any problem in displaying of these images. How to
> create high quality images in JCharts?  Thanks and Regards,Pal
> 
> ---------------------------------
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.


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[jCharts-users] Having JChart Images in PDF through iText

[Pal P. <pal...@ya...>]

Hi All,How come I have my JCharts images in PDF using iText ?I  know how to have images in PDF using iText. But I want to have a maximum clarity of the images generated by JCharts. The images that appear on PDF appear mostly blurred and faded. How could I overcome this? If I have high quality images, then I don't foresee or find any problem in displaying of these images. How to create high quality images in JCharts?  Thanks and Regards,Pal

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[jCharts-users] Re: Hi

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

did you try:  pieChart2DProperties.setTickLength( 0f );

also, please send your support questions to the jch...@li... list as
someone else may benefit from the question/answer and you will get a faster reponse.





--- SRIDHARAN Aravind <ASr...@co...> wrote:
> 
> Hi Nathaniel,
> Sorry by oversight, I forgot to carbon copy my friend.
> Now I do this...
> 
> Sorry...
> 
> > Hi Nathaniel,
> > How are you?
> > I am the user of JCharts downloaded from SourceForge.
> > I am just testing JCharts by creating small examples.
> > I've successfully created a pie chart.
> > If I give labels, I get  small lines protruding out of the pie chart.
> > I just want to avoid that protruding small lines.
> > The reason why I don't want these protruding small lines is nothing but I have around 20-30
> labels dynamically constructed and these lines hit against each other making the image look not
> good to my eyes.
> > 
> > Aravind
> > 
> > PS: I have carbon copied this mail to my colleague Asokaraja.
> > Please make your reply to him also.
> > 


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[jCharts-users] Re: [jCharts-developers] Feature request : Percent sign on Pie charts

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

a task has been added.  I am not sure when it is going to get done. I don't believe it would be
very difficult to implement but we are not ready to do a release on the 1.0 trunk.

perhaps in a month or so?

I could look into it and have the code checked into the CVS repository and you could check out the
code and build it.




--- Vikram Rajan <vr...@st...> wrote:
> hi,
> 
> It would be great if we could have ability to format pie value labels as percentage signs. We
> already have the feature to display currency signs.
> 
> Any plan to do this in the near future?
> 
> thanks,
> Vikram
> 


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[jCharts-users] Question on Image Maps

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

I looked through the image map sample bundled with the download.

It seems that the following code:

<%
StringBuffer html=3D new StringBuffer( 100 );
ImageMap imageMap=3D (ImageMap) request.getAttribute( =
ChartServlet.IMAGE_MAP );

Iterator iterator=3D imageMap.getIterator();
while( iterator.hasNext() )
{
 ImageMapArea imageMapArea=3D (ImageMapArea) iterator.next();
=20
 html.append( "href=3D\"javascript:showValues(" );
 html.append( imageMapArea.getValue() );
 html.append( ",'" );
 html.append( imageMapArea.getLengendLabel() );
 html.append( "','" );
 html.append( imageMapArea.getXAxisLabel() );
 html.append( "');\"" );
%>
 <%=3D  imageMapArea.toHTML( html.toString() ) %>
<%=20
 //---reuse same StringBuffer Object
 html.delete( 0, html.length() );
}=20
%>

produces something like:

href=3D"javascript:showValues(1500.0,'Bugs','1995');"
href=3D"javascript:showValues(6880.0,'Bugs','1996');"
href=3D"javascript:showValues(4510.0,'Bugs','1997');"
href=3D"javascript:showValues(2600.0,'Bugs','1998');"
href=3D"javascript:showValues(1200.0,'Bugs','1999');"
href=3D"javascript:showValues(1580.0,'Bugs','2000');"
href=3D"javascript:showValues(8000.0,'Bugs','2001');"
href=3D"javascript:showValues(4555.0,'Bugs','2002');"
href=3D"javascript:showValues(4000.0,'Bugs','2003');"
href=3D"javascript:showValues(6120.0,'Bugs','2004');"

But this is not the complete area tag. Is there some method that will =
let me get something like:

<area shape=3D"rect" coords=3D"20,20,60,60" =
href=3D"javascript:showValues(6120.0,'Bugs','2004');">

The methods that would help in generating this seem to be protected or =
non-existent. Am I missing something?

- Vikram

[jCharts-users] Feature request : Percent sign on Pie charts

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

hi,

It would be great if we could have ability to format pie value labels as =
percentage signs. We already have the feature to display currency signs.

Any plan to do this in the near future?

thanks,
Vikram

[jCharts-users] Re: Hi

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

--- SRIDHARAN Aravind <ASr...@co...> wrote:
> Hi,
> I have just downloaded JCharts and started working on it.
> It is a wonderful tool.
> Is it possible to set Fonts read from a TTF file for pie and other bar charts?


sure. look at java.awt.Font.createFont(...)

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Re: [jCharts-users] ClassCastException when using axis properties - jCharts 0.7.2 (and earlier)

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

Of course, there are other constructors to use.


AxisProperties( boolean isHorizontal )
AxisProperties()

and then use getXAxisProperties() and getYAxisProperties() and cast them into the type of
properties they are.




--- Lee Francis Wilhelmsen <le...@st...> wrote:
> Hi
> 
> I'm trying to update some code that worked fine when using the 0.6.0 version
> of jCharts. However, now it doesn't and I'm having difficulty finding out
> why. The error seems to have something to do with the LabelAxisProperties
> and AxisProperties classes, but I can't be sure. The code attatched below
> causes the following error:
> 
> java.lang.ClassCastException
>     at
> org.jCharts.chartData.processors.AxisChartDataProcessor.processData(Unknown
> Source)
>     at org.jCharts.axisChart.AxisChart.renderChart(Unknown Source)
>     at org.jCharts.Chart.render(Unknown Source)
>     at org.jCharts.encoders.BinaryEncoderUtil.render(Unknown Source)
>     at org.jCharts.encoders.PNGEncoder.encode(Unknown Source)
>     at org.jCharts.demo.swing.TestGraph.doWork(TestGraph.java:89)
>     at org.jCharts.demo.swing.TestGraph.main(TestGraph.java:108)
> Exception in thread "main"
> 
> However, it works fine when I remove the axis code [replacing the line
> "AxisProperties axisProperties = new AxisProperties(xAxis, yAxis)"
> with "AxisProperties axisProperties = new AxisProperties()"] which is why I
> suspect the LabelAxisProperties and AxisProperties are causing the trouble.
> Can anyone see anything in my code that may be causing this trouble? Is this
> a bug?
> 
> Appreciate any help you can offer.
> 
> Take care
> 
> Regards
> Lee Francis
> 
> 
> Here's the code. It creates a png file in the same directory as the class
> file. I am using Sun's jdk  1.4.1 on Win2000. The jCharts version is 0.7.2,
> but I also got the error with 0.7.0 beta 1 or 3 (?) releases.
> 
> 
> import java.io.*;
> import org.jCharts.*;
> import org.jCharts.axisChart.*;
> import org.jCharts.chartData.*;
> import org.jCharts.encoders.*;
> import org.jCharts.properties.*;
> import org.jCharts.types.*;
> 
> public class TestGraph {
>   public void doWork() {
>     double[][] data = { {1, 3, 5, 7, 5, 8, 3, 5, 6, 7 } };
>     String[] xAxisLabels = { "0", "1", "2", "3", "4", "5", "6", "7", "8",
> "9" };
>     String xAxisTitle = "x-axis";
>     String yAxisTitle = "y-axis";
>     String title = "title";
> 
>     DataSeries dataSeries = new DataSeries(xAxisLabels, xAxisTitle,
> yAxisTitle, title);
>     java.awt.Stroke stroke = new java.awt.BasicStroke(1,
>     java.awt.BasicStroke.CAP_ROUND,
>     java.awt.BasicStroke.JOIN_ROUND);
>     java.awt.Stroke[] strokes = { stroke };
>     java.awt.Shape[] shapes = { null };
>     ChartTypeProperties areaChartProperties = new
> LineChartProperties(strokes, shapes);
>     java.awt.Paint[] paints = { java.awt.Color.RED };
>     String[] legendLabels = null ;
> 
>     try {
>     AxisChartDataSet axisChartDataSet = new AxisChartDataSet(data,
> legendLabels, paints, ChartType.LINE, areaChartProperties);
>     dataSeries.addIAxisPlotDataSet(axisChartDataSet);
> 
>     ChartProperties chartProperties = new ChartProperties();
>     LabelAxisProperties xAxis = new LabelAxisProperties();
>     LabelAxisProperties yAxis = new LabelAxisProperties();
>     xAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>     yAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>     AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
> causes the error
> //    AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
> works
> 
>     LegendProperties legendProperties = null;
>     Chart chart = new AxisChart(dataSeries, chartProperties, axisProperties,
> legendProperties, 400, 300);
> 
>     String prefix = "jcharts_";
>     String suffix = ".png";
>     String dir = System.getProperty("user.dir");
>     File image = File.createTempFile(prefix, suffix, new File(dir));
>     String path = image.getCanonicalPath();
> 
>     // save the chart to file
>     FileOutputStream fos = new FileOutputStream(path);
>     PNGEncoder.encode(chart, fos);
>     fos.close();
>     }
>     catch (PropertyException e) {
>     System.err.println("PropertyException " + e.getMessage());
>     }
>     catch (ChartDataException e) {
>     System.err.println("ChartDataException " + e.getMessage());
>     }
>     catch (FileNotFoundException e) {
>     System.err.println("FileNotFoundException " + e.getMessage());
>     }
>     catch (IOException e) {
>     System.err.println("IOException " + e.getMessage());
>     }
>   }
> 
>   public static void main(String[] args) {
>     System.out.println("Starting");
>     new TestGraph().doWork();
>     System.out.println("Done");
>   }
> }
> 
> 
> In theory, there is no difference between theory and
> practice. But, in practice, there is.
> -- Jan L.A. van de Snepscheut
> 
> 
> 
> -------------------------------------------------------
> 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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Re: [jCharts-users] ClassCastException when using axis properties - jCharts 0.7.2 (and earlier)

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

You need to specify at least one DataAxisProperties Object which extends LabelAxisProperties. 
Whether that is the x or y axis depends if the plot is horizontal.

Perhaps there should be multiple constructors to clarify the API?

AxisProperties( LabelAxisProperties xAxis, DataAxisProperties yAxis )
AxisProperties( DataAxisProperties xAxis, LabelAxisProperties yAxis )
AxisProperties( DataAxisProperties xAxis, DataAxisProperties yAxis )





--- Lee Francis Wilhelmsen <le...@st...> wrote:
> Hi
> 
> I'm trying to update some code that worked fine when using the 0.6.0 version
> of jCharts. However, now it doesn't and I'm having difficulty finding out
> why. The error seems to have something to do with the LabelAxisProperties
> and AxisProperties classes, but I can't be sure. The code attatched below
> causes the following error:
> 
> java.lang.ClassCastException
>     at
> org.jCharts.chartData.processors.AxisChartDataProcessor.processData(Unknown
> Source)
>     at org.jCharts.axisChart.AxisChart.renderChart(Unknown Source)
>     at org.jCharts.Chart.render(Unknown Source)
>     at org.jCharts.encoders.BinaryEncoderUtil.render(Unknown Source)
>     at org.jCharts.encoders.PNGEncoder.encode(Unknown Source)
>     at org.jCharts.demo.swing.TestGraph.doWork(TestGraph.java:89)
>     at org.jCharts.demo.swing.TestGraph.main(TestGraph.java:108)
> Exception in thread "main"
> 
> However, it works fine when I remove the axis code [replacing the line
> "AxisProperties axisProperties = new AxisProperties(xAxis, yAxis)"
> with "AxisProperties axisProperties = new AxisProperties()"] which is why I
> suspect the LabelAxisProperties and AxisProperties are causing the trouble.
> Can anyone see anything in my code that may be causing this trouble? Is this
> a bug?
> 
> Appreciate any help you can offer.
> 
> Take care
> 
> Regards
> Lee Francis
> 
> 
> Here's the code. It creates a png file in the same directory as the class
> file. I am using Sun's jdk  1.4.1 on Win2000. The jCharts version is 0.7.2,
> but I also got the error with 0.7.0 beta 1 or 3 (?) releases.
> 
> 
> import java.io.*;
> import org.jCharts.*;
> import org.jCharts.axisChart.*;
> import org.jCharts.chartData.*;
> import org.jCharts.encoders.*;
> import org.jCharts.properties.*;
> import org.jCharts.types.*;
> 
> public class TestGraph {
>   public void doWork() {
>     double[][] data = { {1, 3, 5, 7, 5, 8, 3, 5, 6, 7 } };
>     String[] xAxisLabels = { "0", "1", "2", "3", "4", "5", "6", "7", "8",
> "9" };
>     String xAxisTitle = "x-axis";
>     String yAxisTitle = "y-axis";
>     String title = "title";
> 
>     DataSeries dataSeries = new DataSeries(xAxisLabels, xAxisTitle,
> yAxisTitle, title);
>     java.awt.Stroke stroke = new java.awt.BasicStroke(1,
>     java.awt.BasicStroke.CAP_ROUND,
>     java.awt.BasicStroke.JOIN_ROUND);
>     java.awt.Stroke[] strokes = { stroke };
>     java.awt.Shape[] shapes = { null };
>     ChartTypeProperties areaChartProperties = new
> LineChartProperties(strokes, shapes);
>     java.awt.Paint[] paints = { java.awt.Color.RED };
>     String[] legendLabels = null ;
> 
>     try {
>     AxisChartDataSet axisChartDataSet = new AxisChartDataSet(data,
> legendLabels, paints, ChartType.LINE, areaChartProperties);
>     dataSeries.addIAxisPlotDataSet(axisChartDataSet);
> 
>     ChartProperties chartProperties = new ChartProperties();
>     LabelAxisProperties xAxis = new LabelAxisProperties();
>     LabelAxisProperties yAxis = new LabelAxisProperties();
>     xAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>     yAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>     AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
> causes the error
> //    AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
> works
> 
>     LegendProperties legendProperties = null;
>     Chart chart = new AxisChart(dataSeries, chartProperties, axisProperties,
> legendProperties, 400, 300);
> 
>     String prefix = "jcharts_";
>     String suffix = ".png";
>     String dir = System.getProperty("user.dir");
>     File image = File.createTempFile(prefix, suffix, new File(dir));
>     String path = image.getCanonicalPath();
> 
>     // save the chart to file
>     FileOutputStream fos = new FileOutputStream(path);
>     PNGEncoder.encode(chart, fos);
>     fos.close();
>     }
>     catch (PropertyException e) {
>     System.err.println("PropertyException " + e.getMessage());
>     }
>     catch (ChartDataException e) {
>     System.err.println("ChartDataException " + e.getMessage());
>     }
>     catch (FileNotFoundException e) {
>     System.err.println("FileNotFoundException " + e.getMessage());
>     }
>     catch (IOException e) {
>     System.err.println("IOException " + e.getMessage());
>     }
>   }
> 
>   public static void main(String[] args) {
>     System.out.println("Starting");
>     new TestGraph().doWork();
>     System.out.println("Done");
>   }
> }
> 
> 
> In theory, there is no difference between theory and
> practice. But, in practice, there is.
> -- Jan L.A. van de Snepscheut
> 
> 
> 
> -------------------------------------------------------
> 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] ClassCastException when using axis properties - jCharts 0.7.2 (and earlier)

[Lee F. W. <le...@st...>]

Hi

I'm trying to update some code that worked fine when using the 0.6.0 version
of jCharts. However, now it doesn't and I'm having difficulty finding out
why. The error seems to have something to do with the LabelAxisProperties
and AxisProperties classes, but I can't be sure. The code attatched below
causes the following error:

java.lang.ClassCastException
    at
org.jCharts.chartData.processors.AxisChartDataProcessor.processData(Unknown
Source)
    at org.jCharts.axisChart.AxisChart.renderChart(Unknown Source)
    at org.jCharts.Chart.render(Unknown Source)
    at org.jCharts.encoders.BinaryEncoderUtil.render(Unknown Source)
    at org.jCharts.encoders.PNGEncoder.encode(Unknown Source)
    at org.jCharts.demo.swing.TestGraph.doWork(TestGraph.java:89)
    at org.jCharts.demo.swing.TestGraph.main(TestGraph.java:108)
Exception in thread "main"

However, it works fine when I remove the axis code [replacing the line
"AxisProperties axisProperties = new AxisProperties(xAxis, yAxis)"
with "AxisProperties axisProperties = new AxisProperties()"] which is why I
suspect the LabelAxisProperties and AxisProperties are causing the trouble.
Can anyone see anything in my code that may be causing this trouble? Is this
a bug?

Appreciate any help you can offer.

Take care

Regards
Lee Francis


Here's the code. It creates a png file in the same directory as the class
file. I am using Sun's jdk  1.4.1 on Win2000. The jCharts version is 0.7.2,
but I also got the error with 0.7.0 beta 1 or 3 (?) releases.


import java.io.*;
import org.jCharts.*;
import org.jCharts.axisChart.*;
import org.jCharts.chartData.*;
import org.jCharts.encoders.*;
import org.jCharts.properties.*;
import org.jCharts.types.*;

public class TestGraph {
  public void doWork() {
    double[][] data = { {1, 3, 5, 7, 5, 8, 3, 5, 6, 7 } };
    String[] xAxisLabels = { "0", "1", "2", "3", "4", "5", "6", "7", "8",
"9" };
    String xAxisTitle = "x-axis";
    String yAxisTitle = "y-axis";
    String title = "title";

    DataSeries dataSeries = new DataSeries(xAxisLabels, xAxisTitle,
yAxisTitle, title);
    java.awt.Stroke stroke = new java.awt.BasicStroke(1,
    java.awt.BasicStroke.CAP_ROUND,
    java.awt.BasicStroke.JOIN_ROUND);
    java.awt.Stroke[] strokes = { stroke };
    java.awt.Shape[] shapes = { null };
    ChartTypeProperties areaChartProperties = new
LineChartProperties(strokes, shapes);
    java.awt.Paint[] paints = { java.awt.Color.RED };
    String[] legendLabels = null ;

    try {
    AxisChartDataSet axisChartDataSet = new AxisChartDataSet(data,
legendLabels, paints, ChartType.LINE, areaChartProperties);
    dataSeries.addIAxisPlotDataSet(axisChartDataSet);

    ChartProperties chartProperties = new ChartProperties();
    LabelAxisProperties xAxis = new LabelAxisProperties();
    LabelAxisProperties yAxis = new LabelAxisProperties();
    xAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
    yAxis.setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
    AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
causes the error
//    AxisProperties axisProperties = new AxisProperties(xAxis, yAxis);  //
works

    LegendProperties legendProperties = null;
    Chart chart = new AxisChart(dataSeries, chartProperties, axisProperties,
legendProperties, 400, 300);

    String prefix = "jcharts_";
    String suffix = ".png";
    String dir = System.getProperty("user.dir");
    File image = File.createTempFile(prefix, suffix, new File(dir));
    String path = image.getCanonicalPath();

    // save the chart to file
    FileOutputStream fos = new FileOutputStream(path);
    PNGEncoder.encode(chart, fos);
    fos.close();
    }
    catch (PropertyException e) {
    System.err.println("PropertyException " + e.getMessage());
    }
    catch (ChartDataException e) {
    System.err.println("ChartDataException " + e.getMessage());
    }
    catch (FileNotFoundException e) {
    System.err.println("FileNotFoundException " + e.getMessage());
    }
    catch (IOException e) {
    System.err.println("IOException " + e.getMessage());
    }
  }

  public static void main(String[] args) {
    System.out.println("Starting");
    new TestGraph().doWork();
    System.out.println("Done");
  }
}


In theory, there is no difference between theory and
practice. But, in practice, there is.
-- Jan L.A. van de Snepscheut

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

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

that works for me. I just made a chart from:


BarChartProperties barChartProperties = new BarChartProperties();

Double[][] m_tmpdata= new Double[][]{ { new Double(10), new Double(15) } };
double[][] m_data = new double[m_tmpdata.length][m_tmpdata[0].length];
for(int i=0; i<m_tmpdata.length; i++)
{
	for(int j=0; j<m_tmpdata[0].length; j++)
	{
		m_data[i][j]=m_tmpdata[i][j].doubleValue();
	}
}

Paint[] paints = {Color.green};
String[] legendLabels = {"Test Legend Label"};
AxisChartDataSet axisChartDataSet = new AxisChartDataSet( m_data, legendLabels, paints,
ChartType.BAR, barChartProperties );

String[] axisLabels = {"1900", "2000" };
IAxisDataSeries dataSeries = new DataSeries( axisLabels, "Wonka Bars", "Years", "Oompa Loompa
Productivity" );
dataSeries.addIAxisPlotDataSet( axisChartDataSet );

ChartProperties chartProperties = new ChartProperties();
AxisProperties axisProperties = new AxisProperties( true );

axisProperties.getYAxisProperties().setShowGridLines( AxisTypeProperties.GRID_LINES_NONE );
axisProperties.getYAxisProperties().setAxisStroke( new ChartStroke( new BasicStroke( 1.5f ),
Color.red ) );

DataAxisProperties yAxis = (DataAxisProperties) axisProperties.getXAxisProperties();
LegendProperties legendProperties = null;

AxisChart axisChart = new AxisChart( dataSeries, chartProperties, axisProperties,
legendProperties, 500, 400 );



--- Sreemannarayana <sp...@os...> wrote:
> I am working with simple Bar charts, JSP, Tomcat. 
> 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[][]". 
>  
> // Double[][] m_tmpdata , this passed through session.
> double[][] m_data = new double[m_tmpdata.length][m_tmpdata[0].length];
> for(int i=0; i<m_tmpdata.length; i++)
> {
>             for(int j=0; j<m_tmpdata[0].length; j++)
>             {
>                         m_data[i][j]=m_tmpdata[i][j].doubleValue();
>             }
> }
>  
>  Paint[] m_paints = TestDataGenerator.getRandomPaints(1) // since its
> simple bar charts.
>  
>  The above code is not working.
>  It’s giving exception like: 
>      "There is not an one to one mapping of "Paint" implementation to
> "data sets".
>  
>      Why am I getting this problem.?????
>  
>      If I write the code like as follows its working fine:
>  
>  Double [][] m_data = {{m_tmpdata[0][0].doubleValue(),
> m_tmpdata[1][0].doubleValue()}};
>  
>  
> Please Help me.
>  
> Thanks and regards.
> 


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Re: [jCharts-users] User defined scale calculation

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

you set the rounding to the nearest whole number, 10 to the zero'th power.  java.util.NumberFormat
will round your increment to the nearest whole number, or 100%. Set the rounding to -2 and remove
the user defined scale to see a 'good fitting' scale.



--- Vikram Rajan <vr...@st...> wrote:
> This question is borne of my inability to understand fully the scale calculation algorithm. I am
> trying to get a scale on the Y Axis that starts from 0 and has labels at increments of 5. This
> is to be used along with usePercentSigns(true). How do I set the increment value and the
> rounding power of ten to make this work? 
> 
> Currently, my code looks like this:
> 
>         double[][] data = new double[][]{ { 0.40, 0.60 } };
>         .................
>         DataAxisProperties dataAxisProperties= (DataAxisProperties)
> axisProperties.getYAxisProperties();
>         dataAxisProperties.setUsePercentSigns(true);
>         dataAxisProperties.setUserDefinedScale( 0, 0.05 );
>         dataAxisProperties.setRoundToNearest( 0 ); 
>         ..................
> 
> I am attaching the chart that this has produced.
> 
> Is this possible given the default algorithm? Or do I need to write a custom scale calculator?
> If I do, some pointers would be greatly appreciated.
> 
> thanks
> Vikram
> 
> 
> 

> ATTACHMENT part 2 application/octet-stream name=yesno.jpg



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Re: [jCharts-users] Swing app resize problem.

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

i dont think there are listeners hooked into the chart for a repaint when the frame size changes.
This could certainly be done.  The swing demo is a general showing of how to display a chart in a
non servlet framework.

I will add a task for the next release to include this functionality in the swing demo. If you
want to implement it, i believe you should override the repaint method of Frame Object to
re-render the chart according to the size of the frame; that is how we will do it.



--- Neo Mingus <neo...@ya...> wrote:
> I just started playing with jCharts, in one of the
> test/demo, the SwingTest class displays a pie chart. 
> Everything looks good, however, if I resize the frame,
> the chart will not display.  Is this a bug, or it's
> the limitation of jCharts?
> 
> __________________________________
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> The New Yahoo! Search - Faster. Easier. Bingo.
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> 
> 
> -------------------------------------------------------
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> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
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[jCharts-users] Swing app resize problem.

[Neo M. <neo...@ya...>]

I just started playing with jCharts, in one of the
test/demo, the SwingTest class displays a pie chart. 
Everything looks good, however, if I resize the frame,
the chart will not display.  Is this a bug, or it's
the limitation of jCharts?

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