stackedxybarrenderer.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<DD>Initialises the renderer and returns a state object that should be passed to all subsequent
 calls to the drawItem() method. Here there is nothing to do.
<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>a state object.</DL>
</DD>
</DL>
<HR>

<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.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/jfree/chart/renderer/XYItemRenderer.html#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)">drawItem</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#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)">drawItem</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>state</CODE> - the renderer state.<DD><CODE>dataArea</CODE> - the area within which the plot is being drawn.<DD><CODE>info</CODE> - collects information about the drawing.<DD><CODE>plot</CODE> - the plot (can be used to obtain standard color information etc).<DD><CODE>domainAxis</CODE> - the domain axis.<DD><CODE>rangeAxis</CODE> - the range axis.<DD><CODE>dataset</CODE> - the dataset.<DD><CODE>series</CODE> - the series index (zero-based).<DD><CODE>item</CODE> - the item index (zero-based).<DD><CODE>crosshairState</CODE> - crosshair information for the plot (<code>null</code> permitted).<DD><CODE>pass</CODE> - the pass index.</DL>
</DD>
</DL>
<HR>

<A NAME="getPreviousHeight(org.jfree.data.XYDataset, int, int)"><!-- --></A><H3>
getPreviousHeight</H3>
<PRE>
protected double <B>getPreviousHeight</B>(<A HREF="../../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A>&nbsp;data,
                                   int&nbsp;series,
                                   int&nbsp;index)</PRE>
<DL>
<DD>Calculates the stacked value of the all series up to, but not including <code>series</code>
 for the specified category, <code>category</code>.  It returns 0.0 if <code>series</code>
 is the first series, i.e. 0.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data.<DD><CODE>series</CODE> - the series.<DD><CODE>index</CODE> - the index.
<DT><B>Returns:</B><DD>double returns a cumulative value for all series' values up to
 but excluding <code>series</code> for <code>index</code>.</DL>
</DD>
</DL>
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