jcharts-users — For users of jCharts

Re: [jCharts-users] printing jCharts servlet output

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

Sounds like IE.  Are you sure both machines have exactly the same patches from Micro$oft Windows
Update?

Also, are there different applications installed on the machines? Micro$oft likes to install
hidden updates along with application installers.

What format images are you using?  Maybe try a a different output format for your charts and IE
will see them.




--- Art Alexander <Art...@sa...> wrote:
> I have an application that uses jsp and servlets to generate an html page that contains jCharts
> output as well as other text.  It works beautifully, until the user decides to print the html
> page using the browser's print function.  The html text portion of the page prints fine, but
> there is a blank box where the graphic should be.  The maddening thing about this problem is
> that on one of our PC's, the page prints as it should-including the graph!  On all of the
> others, the graph is missing.  I would assume that this points to some difference on the client
> PC itself rather than a problem with jCharts, but we are stumped.
> 
>   
> 
> Does anyone have any suggestions as to what would cause two PCs running the same OS, connected
> to the same network, accessing the same application from the same server, running the same
> browser (IE V6), to exhibit different print behavior with respect to the embedded graphic?
> 
>  
> 
> Thanks,
> 
>  
> 
> Art
> 
>  
> 
> 


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[jCharts-users] printing jCharts servlet output

[Art A. <Art...@sa...>]

I have an application that uses jsp and servlets to generate an html =
page that contains jCharts output as well as other text.  It works =
beautifully, until the user decides to print the html page using the =
browser's print function.  The html text portion of the page prints =
fine, but there is a blank box where the graphic should be.  The =
maddening thing about this problem is that on one of our PC's, the page =
prints as it should-including the graph!  On all of the others, the =
graph is missing.  I would assume that this points to some difference on =
the client PC itself rather than a problem with jCharts, but we are =
stumped.

 =20

Does anyone have any suggestions as to what would cause two PCs running =
the same OS, connected to the same network, accessing the same =
application from the same server, running the same browser (IE V6), to =
exhibit different print behavior with respect to the embedded graphic?

=20

Thanks,

=20

Art

=20

Re: [jCharts-users] two y-axis scales?

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

Dual axis is not in the latest release, however there was a code submission for Dual axis on a
line chart which is available in the 'Patches' section on Sourceforge



--- Mike Perham <Mik...@we...> wrote:
> Hi, first I'd like to thank the jCharts dev team for a great package!
> It took me two hours to download the code, integrate it with my webapp
> and get my first chart to display.  Excellent job, folks.
>  
> I was wondering if jCharts supports two scales for the y-axis so that
> two different data sets can be displayed at their own native scale?  An
> example might help explain what I want:
>  
> Consider two different datasets - x-axis is time, y-axis is dollars for
> one set and units for the other set.  Dollars is a bar graph while units
> is a line graph.  If you have Excel installed, go to Insert | Chart...,
> Custom Types and select the "Line - Column on 2 Axes" chart.  That's
> essentially what I want.  Here's an example with two bar charts:
>  
> http://www.geocities.com/jonpeltier/Excel/Charts/format.html#Col2Axes
>  
> or at the bottom of this page:
>  
> http://www.graphpad.com/prism/tutorials/comb_bars_lines/combining_bars_a
> nd_lines.htm
>  
> Hope you get the idea.  :-)
>  
> mike
> 


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[jCharts-users] two y-axis scales?

[Mike P. <Mik...@we...>]

Hi, first I'd like to thank the jCharts dev team for a great package!
It took me two hours to download the code, integrate it with my webapp
and get my first chart to display.  Excellent job, folks.
=20
I was wondering if jCharts supports two scales for the y-axis so that
two different data sets can be displayed at their own native scale?  An
example might help explain what I want:
=20
Consider two different datasets - x-axis is time, y-axis is dollars for
one set and units for the other set.  Dollars is a bar graph while units
is a line graph.  If you have Excel installed, go to Insert | Chart...,
Custom Types and select the "Line - Column on 2 Axes" chart.  That's
essentially what I want.  Here's an example with two bar charts:
=20
http://www.geocities.com/jonpeltier/Excel/Charts/format.html#Col2Axes
=20
or at the bottom of this page:
=20
http://www.graphpad.com/prism/tutorials/comb_bars_lines/combining_bars_a
nd_lines.htm
=20
Hope you get the idea.  :-)
=20
mike

RE: [jCharts-users] getting index of a value in a dataset from Av isValueRenderEvent

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

did you try getValueIndex()?



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> yes, I realize that the data setindex will always be 0 into the array of
> datasets, what 
> I was looking for is the index of the current array item in the dataset[0]
> array. So as 
> below int dataSetIndex = avre.getDataSetIndex(); is always 0,
> 
> 
> 
> What I am looking for is to be able to getthe index value for a call to
> acd.getValue(int dataset,
>  int index). I can hardcode the size of the graph and then user the
> getValueX() pixel locations 
> and cobjob to get the index of what bar is beign rendered, but I would
> rather have it be more 
> flexible. Please let me know if there is any way to do this or if I have to
> go the static route.
> 
> 
> -thank you
> -mtl
> 
> -----Original Message-----
> From: Nathaniel G. Auvil [mailto:nat...@ya...] 
> Sent: Wednesday, September 10, 2003 4:53 PM
> To: jch...@li...
> Subject: Re: [jCharts-users] getting index of a value in a dataset from
> AvisValueRenderEvent
> 
> 
> 
> For a BarChart, the index will allows be zero as there is only one dataset.
> Please note, those RenderEvents are not enabled on any chart with more than
> one dataset yet. (ie Clustered or Stacked
> Bars)
> 
> 
> 
> --- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> > Hello,
> >   
> >  I am implementing a PreAxisValueRenderListener for a bar graph.
> > 
> >  Here is a code snippet:
> > 	
> > 
> >   public void preRender(AxisValueRenderEvent avre) {
> > 	
> > 	
> > 	IAxisPlotDataSet iapd = avre.getiAxisPlotDataSet();
> > 	AxisChartDataSet acd = (AxisChartDataSet) iapd;
> > 
> > 	int dataSetIndex = avre.getDataSetIndex();
> > 	int indexInDataSet = null; //how do I get this
> > 
> > 	/* ... */
> > }
> > 
> >  now Id like to get the index of which piece of data
> > in the given data set is being operated on and use 
> > acd.getValue(int dataset, int index) to get a piece 
> > of data. I cannot find any way in the API to do so.
> > Is there a way?
> > 
> > -thank you in advance
> > -mtl
> > 
> > --------------------------------------------------
> > Michael Lapinski
> > Computer Scientist
> > GE Research
> > 
> > 
> > -------------------------------------------------------
> > 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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> 
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> 
> -------------------------------------------------------
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> _______________________________________________
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> 
> 
> -------------------------------------------------------
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RE: [jCharts-users] Rtating X -Axis label 90 degress

[Lapinski, M. (Research) <lap...@cr...>]

Sorry, 
  I made an error in the code as to when I set that prop, I was over writing
the pinter to the vertical object.

-thanks again 
-mtl

--------------------------------------------------
Michael Lapinski
Computer Scientist
GE Research

-----Original Message-----
From: Nathaniel G. Auvil [mailto:nat...@ya...] 
Sent: Friday, September 12, 2003 10:50 AM
To: jch...@li...
Subject: Re: [jCharts-users] Rtating X -Axis label 90 degress



I can not duplicate your example of the labels not being centered under the
bar. Can you attach an example and code if possible?  What version of
jCharts? what jvm version?


per the user guide:

axisProperties.setXAxisLabelsAreVertical( true );



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello, 
>   is there a way to, in a bar graph to rotate the labels for the X 
> axis so that the labels are releative to their values? ie
> 
> 
>   _   _   _
>  | | | | | |
>  | | | | | |
> _|_|_|_|_|_|_  
>   1   2   3
>   0   0   0
>   0   0   0
>   0   0   0
> 
> instead of:
> 
>   _   _   _
>  | | | | | |
>  | | | | | |
> _|_|_|_|_|_|_
>   1000 2000 3000
> 
> as you can see the labels don't correspond to the correct values this 
> way.
> 
> -thank you
> -mtl
> 
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> 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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-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
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_______________________________________________
jCharts-users mailing list
jCh...@li...
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Re: [jCharts-users] Rtating X -Axis label 90 degress

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

I can not duplicate your example of the labels not being centered under the bar. Can you attach an
example and code if possible?  What version of jCharts? what jvm version?


per the user guide:

axisProperties.setXAxisLabelsAreVertical( true );



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello, 
>   is there a way to, in a bar graph to rotate the labels for the X axis so
> that 
> the labels are releative to their values? ie
> 
> 
>   _   _   _
>  | | | | | |
>  | | | | | |
> _|_|_|_|_|_|_  
>   1   2   3
>   0   0   0
>   0   0   0
>   0   0   0
> 
> instead of:
> 
>   _   _   _
>  | | | | | |
>  | | | | | |
> _|_|_|_|_|_|_
>   1000 2000 3000
> 
> as you can see the labels don't correspond to the correct values this way.
> 
> -thank you
> -mtl
> 
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> 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] Rtating X -Axis label 90 degress

[Lapinski, M. (Research) <lap...@cr...>]

Hello, 
  is there a way to, in a bar graph to rotate the labels for the X axis so
that 
the labels are releative to their values? ie


  _   _   _
 | | | | | |
 | | | | | |
_|_|_|_|_|_|_  
  1   2   3
  0   0   0
  0   0   0
  0   0   0

instead of:

  _   _   _
 | | | | | |
 | | | | | |
_|_|_|_|_|_|_
  1000 2000 3000

as you can see the labels don't correspond to the correct values this way.

-thank you
-mtl


--------------------------------------------------
Michael Lapinski
Computer Scientist
GE Research

[jCharts-users] Re: Antialiasing

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

i just tried 0.7.4 on redhat 9.0, jdk 1.4.2, and everything looked good to me.  

Can you attach an image?  What platform are you on? jdk version? the legacy jpg encoder or the
1.4.x jpg encoder?



--- "Wax, Michael" <Mic...@ad...> wrote:
> Sorry to respond to you directly, but the list didn't send me your reply.
> 
> I'm using 0.7.4.
> 
> ___________________________________ 
> 
> what version of jcharts are you using?
>  
>  
>  
>  --- "Wax, Michael" <Michael_Wax@ad...> wrote:
>  > We are not changing the defaults, but antialiasing seems to be turned
> off:
>  > pie charts (JPEGs) are very jaggy.  Is there a way to fix this?
>  > 
>  > _
>  > This message and any attachments are intended only for the use of the
> addressee and
>  > may contain information that is privileged and confidential. If the
> reader of the 
>  > message is not the intended recipient or an authorized representative of
> the
>  > intended recipient, you are hereby notified that any dissemination of
> this
>  > communication is strictly prohibited. If you have received this
> communication in
>  > error, please notify us immediately by e-mail and delete the message and
> any
>  > attachments from your system.
>  > 
>  
>  
>  =====
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>  
>  __________________________________
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Re: [jCharts-users] Antialiasing

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

what version of jcharts are you using?



--- "Wax, Michael" <Mic...@ad...> wrote:
> We are not changing the defaults, but antialiasing seems to be turned off:
> pie charts (JPEGs) are very jaggy.  Is there a way to fix this?
> 
> _
> This message and any attachments are intended only for the use of the addressee and
> may contain information that is privileged and confidential. If the reader of the 
> message is not the intended recipient or an authorized representative of the
> intended recipient, you are hereby notified that any dissemination of this
> communication is strictly prohibited. If you have received this communication in
> error, please notify us immediately by e-mail and delete the message and any
> attachments from your system.
> 


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[jCharts-users] Antialiasing

[Wax, M. <Mic...@ad...>]

We are not changing the defaults, but antialiasing seems to be turned =
off:
pie charts (JPEGs) are very jaggy.  Is there a way to fix this?

_
This message and any attachments are intended only for the use of the =
addressee and
may contain information that is privileged and confidential. If the =
reader of the=20
message is not the intended recipient or an authorized representative of =
the
intended recipient, you are hereby notified that any dissemination of =
this
communication is strictly prohibited. If you have received this =
communication in
error, please notify us immediately by e-mail and delete the message and =
any
attachments from your system.

RE: [jCharts-users] getting index of a value in a dataset from Av isValueRenderEvent

[Lapinski, M. (Research) <lap...@cr...>]

yes, I realize that the data setindex will always be 0 into the array of
datasets, what 
I was looking for is the index of the current array item in the dataset[0]
array. So as 
below int dataSetIndex = avre.getDataSetIndex(); is always 0,



What I am looking for is to be able to getthe index value for a call to
acd.getValue(int dataset,
 int index). I can hardcode the size of the graph and then user the
getValueX() pixel locations 
and cobjob to get the index of what bar is beign rendered, but I would
rather have it be more 
flexible. Please let me know if there is any way to do this or if I have to
go the static route.


-thank you
-mtl

-----Original Message-----
From: Nathaniel G. Auvil [mailto:nat...@ya...] 
Sent: Wednesday, September 10, 2003 4:53 PM
To: jch...@li...
Subject: Re: [jCharts-users] getting index of a value in a dataset from
AvisValueRenderEvent



For a BarChart, the index will allows be zero as there is only one dataset.
Please note, those RenderEvents are not enabled on any chart with more than
one dataset yet. (ie Clustered or Stacked
Bars)



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello,
>   
>  I am implementing a PreAxisValueRenderListener for a bar graph.
> 
>  Here is a code snippet:
> 	
> 
>   public void preRender(AxisValueRenderEvent avre) {
> 	
> 	
> 	IAxisPlotDataSet iapd = avre.getiAxisPlotDataSet();
> 	AxisChartDataSet acd = (AxisChartDataSet) iapd;
> 
> 	int dataSetIndex = avre.getDataSetIndex();
> 	int indexInDataSet = null; //how do I get this
> 
> 	/* ... */
> }
> 
>  now Id like to get the index of which piece of data
> in the given data set is being operated on and use 
> acd.getValue(int dataset, int index) to get a piece 
> of data. I cannot find any way in the API to do so.
> Is there a way?
> 
> -thank you in advance
> -mtl
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> 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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__________________________________
Do you Yahoo!?
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-------------------------------------------------------
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

Re: [jCharts-users] getting index of a value in a dataset from AvisValueRenderEvent

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

For a BarChart, the index will allows be zero as there is only one dataset.  Please note, those
RenderEvents are not enabled on any chart with more than one dataset yet. (ie Clustered or Stacked
Bars)



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello,
>   
>  I am implementing a PreAxisValueRenderListener for a bar graph.
> 
>  Here is a code snippet:
> 	
> 
>   public void preRender(AxisValueRenderEvent avre) {
> 	
> 	
> 	IAxisPlotDataSet iapd = avre.getiAxisPlotDataSet();
> 	AxisChartDataSet acd = (AxisChartDataSet) iapd;
> 
> 	int dataSetIndex = avre.getDataSetIndex();
> 	int indexInDataSet = null; //how do I get this
> 
> 	/* ... */
> }
> 
>  now Id like to get the index of which piece of data 
> in the given data set is being operated on and use 
> acd.getValue(int dataset, int index) to get a piece 
> of data. I cannot find any way in the API to do so.
> Is there a way?
> 
> -thank you in advance
> -mtl
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> 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] getting index of a value in a dataset from AvisValueRenderEvent

[Lapinski, M. (Research) <lap...@cr...>]

Hello,
  
 I am implementing a PreAxisValueRenderListener for a bar graph.

 Here is a code snippet:
	

  public void preRender(AxisValueRenderEvent avre) {
	
	
	IAxisPlotDataSet iapd = avre.getiAxisPlotDataSet();
	AxisChartDataSet acd = (AxisChartDataSet) iapd;

	int dataSetIndex = avre.getDataSetIndex();
	int indexInDataSet = null; //how do I get this

	/* ... */
}

 now Id like to get the index of which piece of data 
in the given data set is being operated on and use 
acd.getValue(int dataset, int index) to get a piece 
of data. I cannot find any way in the API to do so.
Is there a way?

-thank you in advance
-mtl

--------------------------------------------------
Michael Lapinski
Computer Scientist
GE Research

Re: [jCharts-users] Displaying ledgend

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

pass NULL for the LegendProperties Object.



--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello,
>  how do I disable the displayign of the legend?
>  LegendProperties doesn't have anything that 
>  looks relevant.
> 
> -thank you
> -mtl
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> -----Original Message-----
> From: Nathaniel G. Auvil [mailto:nat...@ya...] 
> Sent: Friday, September 05, 2003 1:47 AM
> To: jch...@li...
> Subject: Re: [jCharts-users] X Axis labels
> 
> 
> 
> try this:
> 
> axisProperties.getXAxisProperties().setShowAxisLabels( false );
> 
> 
> 
> 
> --- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> > Hello,
> >  Is there a way to create a bar graph without
> >  specifying labels for the X axis?
> > 
> >  I have tried using just null for the list and also " ",
> >  both result in errors.
> > 
> > -thank you
> > -mtl
> > 
> > --------------------------------------------------
> > Michael Lapinski
> > Computer Scientist
> > GE Research
> > 
> > 
> > -------------------------------------------------------
> > 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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> 
> __________________________________
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> Yahoo! SiteBuilder - Free, easy-to-use web site design software
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> 
> -------------------------------------------------------
> 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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> Welcome to geek heaven.
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> _______________________________________________
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[jCharts-users] Displaying ledgend

[Lapinski, M. (Research) <lap...@cr...>]

Hello,
 how do I disable the displayign of the legend?
 LegendProperties doesn't have anything that 
 looks relevant.

-thank you
-mtl

--------------------------------------------------
Michael Lapinski
Computer Scientist
GE Research

-----Original Message-----
From: Nathaniel G. Auvil [mailto:nat...@ya...] 
Sent: Friday, September 05, 2003 1:47 AM
To: jch...@li...
Subject: Re: [jCharts-users] X Axis labels



try this:

axisProperties.getXAxisProperties().setShowAxisLabels( false );




--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello,
>  Is there a way to create a bar graph without
>  specifying labels for the X axis?
> 
>  I have tried using just null for the list and also " ",
>  both result in errors.
> 
> -thank you
> -mtl
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf 
> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/jcharts-users


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Re: [jCharts-users] RE: Does JCharts support Time Series chart?

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

ok, now i think i see what you are saying.  I will add a feature request for this so it does not
slip through the cracks...


--- Ashutosh Satyam <ash...@al...> wrote:
> Question is not converting Date to String and pass it in for the xAxisLabels.
> Rather what I'm looking for is, I supply the data to be plotted on my Time Series chart say like
>  (x,y) where x = time and y = value on the Y-Axis.
> 
> Based on all the data supplied, the API generates the x-Axis labels for me. Something similar
> like
> we have currently for Bar Charts where a user can define the scale for the Y-Axis or else it
> is automatically computed based on the provided data to be plotted.
> 
> And for Date we can have different formats, say like I want to plot it in terms of milliseconds,
> time, day,
> date etc. I hope this time I'm clear.
> 
> Regards,
> Ashutosh
> 
> 
> 


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[jCharts-users] RE: Does JCharts support Time Series chart?

[Ashutosh S. <ash...@al...>]

Question is not converting Date to String and pass it in for the =
xAxisLabels.
Rather what I'm looking for is, I supply the data to be plotted on my =
Time Series chart say like
 (x,y) where x =3D time and y =3D value on the Y-Axis.

Based on all the data supplied, the API generates the x-Axis labels for =
me. Something similar like
we have currently for Bar Charts where a user can define the scale for =
the Y-Axis or else it
is automatically computed based on the provided data to be plotted.

And for Date we can have different formats, say like I want to plot it =
in terms of milliseconds, time, day,
date etc. I hope this time I'm clear.

Regards,
Ashutosh

[jCharts-users] Added mailing lists to Gmane

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

http://www.gmane.org is a service that enables to read mailing lists 
using a news reader.

The following user-writeable krysalis mailing lists have been added to 
gmane:

gmane.comp.krysalis.jcharts.devel
gmane.comp.krysalis.jcharts.user
gmane.comp.krysalis.metamorphosis.sandbox

The following cvs-commit read-only lists have been also added:

gmane.comp.krysalis.cvs
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This message should trigger their effective creation.

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

Re: [jCharts-users] RE: Does JCharts support Time Series chart?

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

Why not convert the Date to a String yourself and pass it in?


--- Ashutosh Satyam <ash...@al...> wrote:
> A Line chart takes String[] for the xAxisLabels.  Instead I want to pass java.util.Date object
> for the
> x-Axis. So, I can address locale specific issue too. Basically I'm looking for an API, which
> allows
> me to provide the Date. So, it should be able to interpret it accordingly. 
> 
> Are you planning to implement it in near future.
> 
> Regards,
> Ashutosh.
>     
> --- Ashutosh Satyam <ash...@al...> wrote:
> > I recently downloaded jcharts0.7.4.
> > Found the included docs and the example war file quite useful in using and understanding this
> > library.
> > I need to plot a Time Series chart, say like a chart depicting the memory usage of the system
> > i.e. (Memory Usage v/s Time).
> 
> Why can't you use a Line Chart for this?  Did you take a look at the Samples or User Guide?
> 
> 
> 
> > I have an impression that it's not possible to render such a chart using the existing API.
> >
> > What I see in the current available implementation, for the base class Chart are - Axis Chart,
> > ScatterPlotAxisChart and PieChart2D.
> >
> > If in case it's possible to plot, Time Series Chart using these API's. Kindly let me know.
> >
> > Thanks & Regards,
> > Ashutosh
> >
> 
> 
> 
> 
> -------------------------------------------------------
> 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] RE: Does JCharts support Time Series chart?

[Ashutosh S. <ash...@al...>]

A Line chart takes String[] for the xAxisLabels.  Instead I want to pass =
java.util.Date object for the
x-Axis. So, I can address locale specific issue too. Basically I'm =
looking for an API, which allows
me to provide the Date. So, it should be able to interpret it =
accordingly.=20

Are you planning to implement it in near future.

Regards,
Ashutosh.
   =20
--- Ashutosh Satyam <ash...@al...> wrote:
> I recently downloaded jcharts0.7.4.
> Found the included docs and the example war file quite useful in using =
and understanding this
> library.
> I need to plot a Time Series chart, say like a chart depicting the =
memory usage of the system
> i.e. (Memory Usage v/s Time).

Why can't you use a Line Chart for this?  Did you take a look at the =
Samples or User Guide?



> I have an impression that it's not possible to render such a chart =
using the existing API.
>
> What I see in the current available implementation, for the base class =
Chart are - Axis Chart,
> ScatterPlotAxisChart and PieChart2D.
>
> If in case it's possible to plot, Time Series Chart using these API's. =
Kindly let me know.
>
> Thanks & Regards,
> Ashutosh
>

Re: [jCharts-users] X Axis labels

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

try this:

axisProperties.getXAxisProperties().setShowAxisLabels( false );




--- "Lapinski, Michael (Research)" <lap...@cr...> wrote:
> Hello,
>  Is there a way to create a bar graph without 
>  specifying labels for the X axis?
> 
>  I have tried using just null for the list and also " ", 
>  both result in errors.
> 
> -thank you
> -mtl
> 
> --------------------------------------------------
> Michael Lapinski
> Computer Scientist
> GE Research
> 
> 
> -------------------------------------------------------
> 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] RE: jchart speed and scalability

[<dea...@ve...>]

Thanks Chris,
That was exactly what I was looking for.  I'm not going to be using a
database, other than using a standard naming convention off the filesystem
tree (solaris 8 ufs).  I know using a database might improve performance,
but the sheer amount of data we are dealing with really prohibits this esp.
from a maintain-ability standpoint.  Luckily, my employer has dedicated a
significant amount of hardware for this task, including 2 SunV880's with
NetApps and a GIGE backbone.  I'll be using perl to generate the data
points and to populate the filesystem tree, then using a scheduling servet
and the new java 1.4 nio features to read-in the data and gen the graphs.
Once we can get a proof-of-concept platform going, maybe we could use some
optimization consultancy from the developers.  Keep those opts rolling
Nathaniel!
-dean
"A journey of a thousand miles must begin with a single step."
Lao-tzu, The Way of Lao-tzu

[jCharts-users] X Axis labels

[Lapinski, M. (Research) <lap...@cr...>]

Hello,
 Is there a way to create a bar graph without 
 specifying labels for the X axis?

 I have tried using just null for the list and also " ", 
 both result in errors.

-thank you
-mtl

--------------------------------------------------
Michael Lapinski
Computer Scientist
GE Research

RE: [jCharts-users] jchart speed and scalability

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

Yeah, this is great stuff.

I know of a couple of areas that need some performance work too, so these times should be improved
slightly once those things are done.




--- Chris McKay <ch...@de...> wrote:
> Hi,
> 
> We've some rough benchmarks. For a stacked 29 bar chart:
> 
> Here is the Jcharts 0.74 result. The times are in milliseconds
> $ java org/jCharts/demo/simpleServlet/TestGenerate
> elapsed Time = 2952
> elapsed Time = 816
> elapsed Time = 799
> elapsed Time = 717
> elapsed Time = 792
> 
> and JfreeCharts results:
> $ java org/jfree/chart/demo/TestGenerateFree
> elapsed Time = 3860
> elapsed Time = 1730
> elapsed Time = 1539
> elapsed Time = 1607
> elapsed Time = 1556
> 
> The tests were done on a laptop with Gnome and OpenOffice, emacs and a
> heap of things running. It was running standard i686 RH 2.4.20-18.7
> Linux kernel on a single CPU 1GHz machine. The tests were done with
> JDK1.4 (JfreeCharts needed it to generate the
> charts... some libraries). We also found that the size of the chart had
> a major influence on the performance.
> 
> 
> So that was one reason (amongst others) that we choose jCharts. 
> 
> Subsequent to that we have done stability tests against the 1.0
> development version with some of our modifications to the source.
> (shortly to be put back into the dev tree). Our favourite chart is a
> combo stacked 3D bar chart with 2 data sets and 2 line charts and left
> and right Y axis, of about 13 data points a piece. 
> 
> We've got a few other pieces in the equation so the jCharts engine is
> being fed by a servlet that is passed the data and chart parameters over
> http.
> 
> I ran Apache Bench against it so it was a servlet on one machine talking
> to a servlet gening a chart to disk and returning a unique file name on
> the charting machine.
> 
> We got these figures:
> 
> Machine 1 - my overworked DB server (bless it):
> 
> OS: Linux version 2.4.18-19.7.x
> CPU: Intel Pentium III (Katmai) 450 MHz processor (891.11 BogoMIPS)
> Memory: 382424k/393216k available
> 
> Software: jCharts 1.0+ with SUN JVM 1.4.1_01, Tomcat 4.1.12, also a
> whole bunch of stuff, 2 x Oracle instances, iPlanet LDAP server, Apache
> 
> 192 processes: 190 sleeping, 2 running, 0 zombie, 0 stopped CPU states:
> 0.5% user, 0.3% system, 0.0% nice, 0.3% idle Mem: 384884K av, 376868K
> used, 8016K free, 0K shrd, 43016K buff Swap: 1052248K av, 133632K used,
> 918616K free 181448K cached 
> 
> C:\Program Files\Apache Group\Apache2\bin>ab -n 10 -c 1
> http://webserver.defacto.local:8081/Charts/Test
> This is ApacheBench, Version 2.0.40-dev <$Revision: 1.121.2.1 $>
> apache-2.0
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> Copyright (c) 1998-2002 The Apache Software Foundation,
> http://www.apache.org/
> 
> Benchmarking dbserver.defacto.local (be patient).....done
> 
> 
> Server Software:        Apache
> Server Hostname:        webserver.defacto.local
> Server Port:            8081
> 
> Document Path:          /Charts/Test
> Document Length:        65 bytes
> 
> Concurrency Level:      1
> Time taken for tests:   11.953125 seconds
> Complete requests:      10
> Failed requests:        0
> Write errors:           0
> Total transferred:      1870 bytes
> HTML transferred:       650 bytes
> Requests per second:    0.84 [#/sec] (mean)
> Time per request:       1195.313 [ms] (mean)
> Time per request:       1195.313 [ms] (mean, across all concurrent
> requests)
> Transfer rate:          0.08 [Kbytes/sec] received
> 
> Connection Times (ms)
>               min  mean[+/-sd] median   max
> Connect:        0    0   0.0      0       0
> Processing:  1078 1194 220.1   1109    1796
> Waiting:     1078 1194 220.1   1109    1796
> Total:       1078 1194 220.1   1109    1796
> 
> So it clanked away at a little under a chart a second.
> 
> I banged up the concurrent threads to 10
> 
> C:\Program Files\Apache Group\Apache2\bin>ab -n 100 -c 10
> http://webserver.defacto.local:8081/Charts/Test
> This is ApacheBench, Version 2.0.40-dev <$Revision: 1.121.2.1 $>
> apache-2.0
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> Copyright (c) 1998-2002 The Apache Software Foundation,
> http://www.apache.org/
> 
> Benchmarking dbserver.defacto.local (be patient).....done
> 
> 
> Server Software:        Apache
> Server Hostname:        webserver.defacto.local
> Server Port:            8081
> 
> Document Path:          /Charts/Test
> Document Length:        65 bytes
> 
> Concurrency Level:      10
> Time taken for tests:   115.31250 seconds
> Complete requests:      100
> Failed requests:        11
>    (Connect: 0, Length: 11, Exceptions: 0)
> Write errors:           0
> Total transferred:      18689 bytes
> HTML transferred:       6489 bytes
> Requests per second:    0.87 [#/sec] (mean)
> Time per request:       11503.125 [ms] (mean)
> Time per request:       1150.313 [ms] (mean, across all concurrent
> requests)
> Transfer rate:          0.16 [Kbytes/sec] received
> 
> Connection Times (ms)
>               min  mean[+/-sd] median   max
> Connect:        0    0   0.0      0       0
> Processing:  4093 11313 2792.3  11109   17312
> Waiting:     4093 11313 2792.2  11109   17312
> Total:       4093 11313 2792.3  11109   17312
> 
> Percentage of the requests served within a certain time (ms)
>   50%  11109
>   66%  11796
>   75%  13546
>   80%  14015
>   90%  15171
>   95%  16078
>   98%  16625
>   99%  17312
>  100%  17312 (longest request)
> 
> C:\Program Files\Apache Group\Apache2\bin>
> Length errors are due to filename sometimes having differing sizes
> 
> And it still churned out about 1 chart a second.
> 
> I did the same test on the production server:
> 
> OS: Windows 2000 Advanced Server
> CPU: 2 x Pentium Xeon 1.2Ghz processor
> Memory: 4Gb
> Software: jCharts 1.0+ with SUN JVM 1.4.1_01, Tomcat 4.1.24,
> ActiveDirectory, not much else 
>  
> [root@DBServer bin]# ab -n 100 -c 10
> http://dbserver.defacto.local:8081/Charts/Test
> This is ApacheBench, Version 1.3d <$Revision: 1.67 $> apache-1.3
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> Copyright (c) 1998-2002 The Apache Software Foundation,
> http://www.apache.org/
> 
> Benchmarking dbserver.defacto.local (be patient).....done
> Server Software:        Apache
> 
> Server Hostname:        dbserver.defacto.local
> Server Port:            8081
> 
> Document Path:          /Charts/Test
> Document Length:        65 bytes
> 
> Concurrency Level:      10
> Time taken for tests:   14.040 seconds
> Complete requests:      100
> Failed requests:        38
>    (Connect: 0, Length: 38, Exceptions: 0)
> Broken pipe errors:     0
> Total transferred:      18662 bytes
> HTML transferred:       6462 bytes
> Requests per second:    7.12 [#/sec] (mean)
> Time per request:       1404.00 [ms] (mean)
> Time per request:       140.40 [ms] (mean, across all concurrent
> requests)
> Transfer rate:          1.33 [Kbytes/sec] received
> 
> Connnection Times (ms)
>               min  mean[+/-sd] median   max
> Connect:        0     7   22.5      0   100
> Processing:   456  1338  434.0   1288  2568
> Waiting:      456  1337  434.1   1288  2568
> Total:        456  1345  435.6   1288  2568
> 
> Percentage of the requests served within a certain time (ms)
>   50%   1288
>   66%   1506
>   75%   1660
>   80%   1753
>   90%   1894
>   95%   2059
>   98%   2406
>   99%   2545
>  100%   2568 (last request)
> 
> 
> I get the feeling that pure chart creation is down to CPU and JVM
> implementation, scalability probabably is memory and servlet engine.
> Probably a bit of Tomcat tuning on the production machine wouldn't have
> gone amiss.
> 
> Chris
> 
> 
> To: jch...@li...
> From: dea...@ve...
> Date: Wed, 3 Sep 2003 15:11:28 -0700
> Subject: [jCharts-users] jchart speed and scalability
> Reply-To: jch...@li...
> 
> hi folks,
> I just got the jCharts0.7.4 up and running using jboss3.2.1 on both
> linux
> and solaris boxes (JDK1.4.1_02) using the supplied example WAR package.
> I
> am rather new to using java servlets let alone jcharts, but I would like
> to
> know if there are any benchmarks out there on how fast these charts are
> generated.  For example, let's say we only want to generate a line chart
> (X,Y) with 95 data points using servlets instead of jsp.   Now,
> excluding
> any startup-time delays due to the java servlet engine, how fast could
> the
> graph be rendered (e.g in comparison to perl/GD and/or Jfreechart)?
> Now,
> how about scalability, let's just say same question except many more
> users
> accessing different graphs at the same time.  In a multi-processor
> environment, is scalability mostly dependent on the java servlet engine?
> Also, same question but without using servlets or jsp or any java
> application server at all?  I know benchmarks are very difficult to do,
> but
> I'm just looking for a rough estimate.  I'm going to run some of my own
> testing and benchmarks soon also.  Thank you.
> -dean
> 
> 
> 
> 
> -------------------------------------------------------
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