/***********************************************************************************************
* File Info: $Id: ScatterPlotChartServlet.java,v 1.1 2003/08/28 01:17:36 nathaniel_auvil Exp $
* Copyright (C) 2002
* Author: Nathaniel G. Auvil
* Contributor(s):
*
* Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation ("Software"), with or
* without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and notices.
* Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
* products derived from this Software without prior written permission of Nathaniel G.
* Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
*
* 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
* in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
* registered trademark of Nathaniel G. Auvil.
*
* 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
*
* THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
************************************************************************************************/
package org.krysalis.jcharts.demo.simpleservlet;
import org.krysalis.jcharts.axisChart.ScatterPlotAxisChart;
import org.krysalis.jcharts.chartData.ScatterPlotDataSeries;
import org.krysalis.jcharts.chartData.ScatterPlotDataSet;
import org.krysalis.jcharts.encoders.ServletEncoderHelper;
import org.krysalis.jcharts.properties.AxisProperties;
import org.krysalis.jcharts.properties.ChartProperties;
import org.krysalis.jcharts.properties.DataAxisProperties;
import org.krysalis.jcharts.properties.LegendProperties;
import org.krysalis.jcharts.properties.LineChartProperties;
import org.krysalis.jcharts.properties.PointChartProperties;
import org.krysalis.jcharts.properties.ScatterPlotProperties;
import org.krysalis.jcharts.properties.util.ChartFont;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.awt.geom.Point2D;
import java.io.IOException;
public class ScatterPlotChartServlet extends HttpServlet
{
//---all of my charts serviced by this Servlet will have the same properties.
protected LegendProperties legendProperties;
protected AxisProperties axisProperties;
protected ChartProperties chartProperties;
protected int width = 550;
protected int height = 360;
/**********************************************************************************************
*
**********************************************************************************************/
public void init()
{
this.legendProperties = new LegendProperties();
this.chartProperties = new ChartProperties();
this.axisProperties = new AxisProperties( true );
ChartFont axisScaleFont = new ChartFont( new Font( "Georgia Negreta cursiva", Font.PLAIN, 13 ), Color.black );
axisProperties.getXAxisProperties().setScaleChartFont( axisScaleFont );
axisProperties.getYAxisProperties().setScaleChartFont( axisScaleFont );
ChartFont axisTitleFont = new ChartFont( new Font( "Arial Narrow", Font.PLAIN, 14 ), Color.black );
axisProperties.getXAxisProperties().setTitleChartFont( axisTitleFont );
axisProperties.getYAxisProperties().setTitleChartFont( axisTitleFont );
ChartFont titleFont = new ChartFont( new Font( "Georgia Negreta cursiva", Font.PLAIN, 14 ), Color.black );
this.chartProperties.setTitleFont( titleFont );
}
/******************************************************************************************
*
*
******************************************************************************************/
private ScatterPlotProperties createScatterPlotProperties()
{
Stroke[] strokes = new Stroke[]{LineChartProperties.DEFAULT_LINE_STROKE};
Shape[] shapes = new Shape[]{PointChartProperties.SHAPE_CIRCLE};
return new ScatterPlotProperties( strokes, shapes );
}
/*****************************************************************************************
* Generates a random MultiDataSet
*
* @return ScatterPlotDataSet
******************************************************************************************/
private ScatterPlotDataSet createScatterPlotDataSet()
{
Point2D.Double[] points = new Point2D.Double[ 20 ];
for( int x = 0; x < 20; x++ )
{
//--- y = x^2
points[ x ] = ScatterPlotDataSet.createPoint2DDouble();
points[ x ].setLocation( x, Math.pow( x, 2 ) );
}
ScatterPlotDataSet scatterPlotDataSet = new ScatterPlotDataSet( this.createScatterPlotProperties() );
scatterPlotDataSet.addDataPoints( points, Color.red, "Proprietary" );
return scatterPlotDataSet;
}
/**********************************************************************************************
*
**********************************************************************************************/
public void service( HttpServletRequest req, HttpServletResponse httpServletResponse ) throws ServletException, IOException
{
try
{
ScatterPlotDataSet scatterPlotDataSet = this.createScatterPlotDataSet();
ScatterPlotDataSeries scatterPlotDataSeries = new ScatterPlotDataSeries( scatterPlotDataSet,
"X-Axis Title",
"Y-Axis Title",
"Chart Title" );
DataAxisProperties xAxisProperties = new DataAxisProperties();
xAxisProperties.setUserDefinedScale( -5, 3 );
xAxisProperties.setNumItems( 10 );
xAxisProperties.setRoundToNearest( 0 );
DataAxisProperties yAxisProperties = new DataAxisProperties();
yAxisProperties.setUserDefinedScale( -30, 50 );
yAxisProperties.setNumItems( 10 );
yAxisProperties.setRoundToNearest( 1 );
AxisProperties axisProperties = new AxisProperties( xAxisProperties, yAxisProperties );
ChartProperties chartProperties = new ChartProperties();
LegendProperties legendProperties = new LegendProperties();
ScatterPlotAxisChart scatterPlotAxisChart = new ScatterPlotAxisChart( scatterPlotDataSeries,
chartProperties,
axisProperties,
legendProperties,
500,
400 );
ServletEncoderHelper.encodeJPEG13( scatterPlotAxisChart, 1.0f, httpServletResponse );
}
catch( Throwable throwable )
{
//HACK do your error handling here...
throwable.printStackTrace();
}
}
}