[jCharts-users] Fwd: Re: Regarding jCharts Samples

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--- "Nathaniel G. Auvil" <nat...@ya...> wrote:
> Date: Tue, 3 Dec 2002 17:46:20 -0800 (PST)
> From: "Nathaniel G. Auvil" <nat...@ya...>
> Subject: Re: Regarding jCharts Samples
> To: Ravi <rvb...@re...>
> 
> 
> do you set the mime type for the return image?  If you enocde using the method which takes a
> HttpServletResponse it does this automatically.
> 
> Have you tried mozilla or another browser?  Just curious if you saw the same behavior.
> 
> Could you just make you Servlet mapping: "ChartServlet.jpg" in your web.xml file?
> 
> 
> 
> 
> --- Ravi <rvb...@re...> wrote:
> > Hello Nathaniel,
> > 
> > Thankyou for your support with my previous queries regarding 
> > jCharts.
> > 
> > I ve a minor query about printing the charts from a jsp page, i ve 
> > modified the sample provided, the code snippet is as follows:
> > 
> > .......
> > <tr>
> >  	<td bgcolor="Silver"><img border="0" src="../ChartServlet" 
> > useMap="#chartMap"></td>
> > 
> > </tr>
> > .......
> > 
> > on the jsp page with chart loaded and displayed, i ve a print 
> > button which uses javascript to call browser's print function 
> > (ctrl-P internet explorer), in the print i get everything other 
> > than the chart image, the html code snippet renederd to the 
> > browser is as :
> > ...
> > <tr>
> >  	<td colspan="5" align="center"><img border="0" 
> > src="../ChartServlet" useMap="#chartMap"></td>
> > </tr>
> > ...
> > 
> > now if you see the src property of img shows no extension to the 
> > image file.
> > 
> > 
> > for testing purpose, i [Saved As] the rendered jsp to html on my 
> > local disk, there was jpg extension given to image name showed 
> > below:
> > 
> > ....
> > 
> > <tr>
> >  	<td colspan="5" align="center"><img border="0" 
> > src="../ChartServlet.jpg" useMap="#chartMap"></td>
> > </tr>
> > 
> > ...
> > 
> > I printed this, the chart is also printed.
> > 
> > But the application, i m using jCharts, has an online printing 
> > functionality where no chart image is printed.
> > 
> > I would be thankful, if you can help me out with this problem as 
> > the development using jCharts is over.
> > 
> > 
> > Note: there is no problem with charts being displayed on the 
> > screen.
> > 
> > 
> > Reply Awaited.
> > 
> > Regards,
> > 
> > Ravi Bhatia.
> > Team Lead, CIPL
> > 
> > 
> > 
> > #############
> > 
> > On Wed, 13 Nov 2002 Nathaniel G. Auvil wrote :
> > >
> > >I am not sure what you are asking.
> > >
> > >The ChartServlet used in the demo code was just for that demo 
> > >code and not intended to be part of
> > >the core jcharts API.  You certainly can copy it from the demo 
> > >and modify it to do whatever you
> > >need.
> > >
> > >Each chart on a page needs a separate request to the Server.  so 
> > >you would need two or more <img>
> > >tags.
> > >
> > >Yes, the encode(...) methods return void.  Would you prefer them 
> > >to return something?
> > >
> > >
> > >
> > >
> > >--- Ravi <rvb...@re...> wrote:
> > > > Hello Nathaniel,
> > > >
> > > > Thank you for the guidance. I ve a query about chart servlet, 
> > >i
> > > > used the servlet for viewing more than 1 graph on one page 
> > >with
> > > > different data inputs and different types of graphs 
> > >(charts).
> > > > Secondly, the encoder/encoder13 class returns nothing 
> > >(void),
> > > > could you pls. clear my doubt about the encoding technique you 
> > >ve
> > > > used. I m stuck at this point for using jChart for more than 
> > >1
> > > > graph on jsp page and about the encoding technique.
> > > >
> > > > Reply awaited.
> > > >
> > > > Regards,
> > > > Ravi.
> > > >
> > > >
> > > > On Fri, 01 Nov 2002 Nathaniel G. Auvil wrote :
> > > > >
> > > > >hi ravi.
> > > > >
> > > > >all the user guide charts use randomly generated data for 
> > >the
> > > > >plots.  If you download the user
> > > > >guide, it includes all the source used to generate the 
> > >charts.
> > > > >
> > > > >
> > > > >here is the code it used to generate a LineChart:
> > > > >
> > > > >
> > > > 
> > >
> >/******************************************************************************************/
> > > > > 	private void basicChart() throws ChartDataException
> > > > > 	{
> > > > > 		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= TestDataGenerator.getRandomNumbers( 1, 7, 
> > >0,
> > > > >6000 );
> > > > > 		String[] legendLabels= { "Bugs" };
> > > > > 		Paint[] paints= TestDataGenerator.getRandomPaints( 1 );
> > > > >
> > > > > 		Stroke[] strokes= { 
> > >LineChartProperties.DEFAULT_LINE_STROKE
> > > > >};
> > > > > 		Shape[] shapes= { PointChartProperties.SHAPE_CIRCLE };
> > > > > 		LineChartProperties lineChartProperties= new
> > > > >LineChartProperties( strokes, shapes );
> > > > >
> > > > > 		AxisChartDataSet axisChartDataSet= new AxisChartDataSet( 
> > >data,
> > > > >legendLabels, paints,
> > > > >ChartType.LINE, lineChartProperties );
> > > > >
> > > > > 		dataSeries.addIAxisChartDataSet( axisChartDataSet );
> > > > >
> > > > > 		ChartProperties chartProperties= new ChartProperties();
> > > > > 		AxisProperties axisProperties= new AxisProperties();
> > > > > 		LegendProperties legendProperties= new 
> > >LegendProperties();
> > > > >
> > > > > 		AxisChart axisChart= new AxisChart( dataSeries,
> > > > >chartProperties, axisProperties,
> > > > >legendProperties, AxisCharts.width, AxisCharts.height );
> > > > >
> > > > > 		super.exportImage( axisChart, "basicChart" );
> > > > > 	}
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >--- "Ravi Bhatia." <rvb...@re...> wrote:
> > > > > > Hello,
> > > > > >
> > > > > > This is in reference to Jchart Examples mentioned in 
> > >your
> > > > > > site. The snippet provided for Linechart is not 
> > >generating
> > > > >the
> > > > > > corresponding chart when we executed in JSP page. Would
> > > > > > you pls help us in this regard.  We would be grateful if 
> > >you
> > > > > > could send us some code-snippets which will fetch the 
> > >data
> > > > > > from outside entity dynamically and plot the graph
> > > > > > accordingly.
> > > > > >
> > > > > > thanking you.
> > > > > > awaiting your reply.
> > > > > >
> > > > > > Ravi Bhatia.
> > > > > > Technical Team Lead.
> > > > > > CIPL, Mumbai.
> > > > >
> > > > >
> > > > >=====
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> =====
> An easy read on your Digital Rights Disappearing
> [http://newsforge.com/newsforge/02/10/21/1449250.shtml?tid=19]
> 
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