clusteredxybarrenderer.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<A NAME="ClusteredXYBarRenderer()"><!-- --></A><H3>
ClusteredXYBarRenderer</H3>
<PRE>
public <B>ClusteredXYBarRenderer</B>()</PRE>
<DL>
<DD>Default constructor. Bar margin is set to 0.0.
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</DL>
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<A NAME="ClusteredXYBarRenderer(double, boolean)"><!-- --></A><H3>
ClusteredXYBarRenderer</H3>
<PRE>
public <B>ClusteredXYBarRenderer</B>(double&nbsp;margin,
                              boolean&nbsp;centerBarAtStartValue)</PRE>
<DL>
<DD>Constructs a new XY clustered bar renderer.
<P>
<DT><B>Parameters:</B><DD><CODE>margin</CODE> - the percentage amount to trim from the width of each bar.<DD><CODE>centerBarAtStartValue</CODE> - If true, bars will be centered on the start of the time period.</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="initialise(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.plot.XYPlot, org.jfree.data.XYDataset, org.jfree.chart.plot.PlotRenderingInfo)"><!-- --></A><H3>
initialise</H3>
<PRE>
public <A HREF="../../../../org/jfree/chart/renderer/XYItemRendererState.html" title="class in org.jfree.chart.renderer">XYItemRendererState</A> <B>initialise</B>(java.awt.Graphics2D&nbsp;g2,
                                      java.awt.geom.Rectangle2D&nbsp;dataArea,
                                      <A HREF="../../../../org/jfree/chart/plot/XYPlot.html" title="class in org.jfree.chart.plot">XYPlot</A>&nbsp;plot,
                                      <A HREF="../../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A>&nbsp;data,
                                      <A HREF="../../../../org/jfree/chart/plot/PlotRenderingInfo.html" title="class in org.jfree.chart.plot">PlotRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Initialises the renderer. Here we calculate the Java2D y-coordinate for zero, since all
 the bars have their bases fixed at zero. Copied from superclass to
 initialize local variables.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/jfree/chart/renderer/XYItemRenderer.html#initialise(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.plot.XYPlot, org.jfree.data.XYDataset, org.jfree.chart.plot.PlotRenderingInfo)">initialise</A></CODE> in interface <CODE><A HREF="../../../../org/jfree/chart/renderer/XYItemRenderer.html" title="interface in org.jfree.chart.renderer">XYItemRenderer</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/jfree/chart/renderer/XYBarRenderer.html#initialise(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.plot.XYPlot, org.jfree.data.XYDataset, org.jfree.chart.plot.PlotRenderingInfo)">initialise</A></CODE> in class <CODE><A HREF="../../../../org/jfree/chart/renderer/XYBarRenderer.html" title="class in org.jfree.chart.renderer">XYBarRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>g2</CODE> - the graphics device.<DD><CODE>dataArea</CODE> - the area inside the axes.<DD><CODE>plot</CODE> - the plot.<DD><CODE>data</CODE> - the data.<DD><CODE>info</CODE> - an optional info collection object to return data back to the caller.
<DT><B>Returns:</B><DD>The number of passes required by the renderer.</DL>
</DD>
</DL>
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<A NAME="setMargin(double)"><!-- --></A><H3>
setMargin</H3>
<PRE>
public void <B>setMargin</B>(double&nbsp;margin)</PRE>
<DL>
<DD>Sets the margin.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/jfree/chart/renderer/XYBarRenderer.html#setMargin(double)">setMargin</A></CODE> in class <CODE><A HREF="../../../../org/jfree/chart/renderer/XYBarRenderer.html" title="class in org.jfree.chart.renderer">XYBarRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>margin</CODE> - the margin.</DL>
</DD>
</DL>
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<A NAME="drawItem(java.awt.Graphics2D, org.jfree.chart.renderer.XYItemRendererState, java.awt.geom.Rectangle2D, org.jfree.chart.plot.PlotRenderingInfo, org.jfree.chart.plot.XYPlot, org.jfree.chart.axis.ValueAxis, org.jfree.chart.axis.ValueAxis, org.jfree.data.XYDataset, int, int, org.jfree.chart.plot.CrosshairState, int)"><!-- --></A><H3>
drawItem</H3>
<PRE>
public void <B>drawItem</B>(java.awt.Graphics2D&nbsp;g2,
                     <A HREF="../../../../org/jfree/chart/renderer/XYItemRendererState.html" title="class in org.jfree.chart.renderer">XYItemRendererState</A>&nbsp;state,
                     java.awt.geom.Rectangle2D&nbsp;dataArea,
                     <A HREF="../../../../org/jfree/chart/plot/PlotRenderingInfo.html" title="class in org.jfree.chart.plot">PlotRenderingInfo</A>&nbsp;info,
                     <A HREF="../../../../org/jfree/chart/plot/XYPlot.html" title="class in org.jfree.chart.plot">XYPlot</A>&nbsp;plot,
                     <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A>&nbsp;domainAxis,
                     <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A>&nbsp;rangeAxis,
                     <A HREF="../../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A>&nbsp;dataset,
                     int&nbsp;series,
                     int&nbsp;item,
                     <A HREF="../../../../org/jfree/chart/plot/CrosshairState.html" title="class in org.jfree.chart.plot">CrosshairState</A>&nbsp;crosshairState,
                     int&nbsp;pass)</PRE>
<DL>
<DD>Draws the visual representation of a single data item. This method
 is mostly copied from the superclass, the change is that in the
 calculated space for a singe bar we draw bars for each series next to
 each other. The width of each bar is the available width divided by
 the number of series. Bars for each series are drawn in order left to
 right.
<P>
<DD><DL>