xydifferencerenderer.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

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<DT><B>Parameters:</B><DD><CODE>paint</CODE> - the paint (<code>null</code> not permitted).</DL>
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<A NAME="getNegativePaint()"><!-- --></A><H3>
getNegativePaint</H3>
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public java.awt.Paint <B>getNegativePaint</B>()</PRE>
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<DD>Returns the paint used to highlight negative differences.
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<DT><B>Returns:</B><DD>the paint (never <code>null</code>).</DL>
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<A NAME="setNegativePaint(java.awt.Paint)"><!-- --></A><H3>
setNegativePaint</H3>
<PRE>
public void <B>setNegativePaint</B>(java.awt.Paint&nbsp;paint)</PRE>
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<DD>Sets the paint used to highlight negative differences.
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<DT><B>Parameters:</B><DD><CODE>paint</CODE> - the paint (<code>null</code> not permitted).</DL>
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<A NAME="getPlotShapes()"><!-- --></A><H3>
getPlotShapes</H3>
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public boolean <B>getPlotShapes</B>()</PRE>
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<DD>Returns a flag that controls whether or not shapes are drawn for each data value.
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<DT><B>Returns:</B><DD>a boolean.</DL>
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<A NAME="setPlotShapes(boolean)"><!-- --></A><H3>
setPlotShapes</H3>
<PRE>
public void <B>setPlotShapes</B>(boolean&nbsp;flag)</PRE>
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<DD>Sets a flag that controls whether or not shapes are drawn for each data value.
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<DT><B>Parameters:</B><DD><CODE>flag</CODE> - the flag.</DL>
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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>
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<DD>Initialises the renderer and returns a state object that should be passed to subsequent
 calls to the drawItem() method.  This method will be called before the first
 item is rendered, giving the renderer an opportunity to initialise any
 state information it wants to maintain.  The renderer can do nothing if it chooses.
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<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/AbstractXYItemRenderer.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/AbstractXYItemRenderer.html" title="class in org.jfree.chart.renderer">AbstractXYItemRenderer</A></CODE></DL>
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<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>
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<A NAME="getPassCount()"><!-- --></A><H3>
getPassCount</H3>
<PRE>
public int <B>getPassCount</B>()</PRE>
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<DD>Returns <code>2</code>, the number of passes required by the renderer.  The <A HREF="../../../../org/jfree/chart/plot/XYPlot.html" title="class in org.jfree.chart.plot"><CODE>XYPlot</CODE></A> 
 will run through the dataset this number of times.
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<DT><B>Specified by:</B><DD><CODE><A HREF="../../.