chartutilities.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeChartAsPNG(java.io.OutputStream, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo, boolean, int)"><!-- --></A><H3>
writeChartAsPNG</H3>
<PRE>
public static void <B>writeChartAsPNG</B>(java.io.OutputStream&nbsp;out,
                                   <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                   int&nbsp;width,
                                   int&nbsp;height,
                                   <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info,
                                   boolean&nbsp;encodeAlpha,
                                   int&nbsp;compression)
                            throws java.io.IOException</PRE>
<DL>
<DD>Writes a chart to an output stream in PNG format.  This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - carries back chart rendering info (<code>null</code> permitted).<DD><CODE>encodeAlpha</CODE> - encode alpha?<DD><CODE>compression</CODE> - the PNG compression level (0-9).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeScaledChartAsPNG(java.io.OutputStream, org.jfree.chart.JFreeChart, int, int, int, int)"><!-- --></A><H3>
writeScaledChartAsPNG</H3>
<PRE>
public static void <B>writeScaledChartAsPNG</B>(java.io.OutputStream&nbsp;out,
                                         <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                         int&nbsp;width,
                                         int&nbsp;height,
                                         int&nbsp;widthScaleFactor,
                                         int&nbsp;heightScaleFactor)
                                  throws java.io.IOException</PRE>
<DL>
<DD>Writes a scaled version of a chart to an output stream in PNG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the unscaled chart width.<DD><CODE>height</CODE> - the unscaled chart height.<DD><CODE>widthScaleFactor</CODE> - the horizontal scale factor.<DD><CODE>heightScaleFactor</CODE> - the vertical scale factor.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O problems.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsPNG(java.io.File, org.jfree.chart.JFreeChart, int, int)"><!-- --></A><H3>
saveChartAsPNG</H3>
<PRE>
public static void <B>saveChartAsPNG</B>(java.io.File&nbsp;file,
                                  <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                  int&nbsp;width,
                                  int&nbsp;height)
                           throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to the specified file in PNG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file name (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsPNG(java.io.File, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
saveChartAsPNG</H3>
<PRE>
public static void <B>saveChartAsPNG</B>(java.io.File&nbsp;file,
                                  <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                  int&nbsp;width,
                                  int&nbsp;height,
                                  <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)
                           throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to a file in PNG format.  This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - the chart rendering info (<code>null</code> permitted).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsPNG(java.io.File, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo, boolean, int)"><!-- --></A><H3>
saveChartAsPNG</H3>
<PRE>
public static void <B>saveChartAsPNG</B>(java.io.File&nbsp;file,
                                  <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                  int&nbsp;width,
                                  int&nbsp;height,
                                  <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info,
                                  boolean&nbsp;encodeAlpha,
                                  int&nbsp;compression)
                           throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to a file in PNG format.  This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - the chart rendering info (<code>null</code> permitted).<DD><CODE>encodeAlpha</CODE> - encode alpha?<DD><CODE>compression</CODE> - the PNG compression level (0-9).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeChartAsJPEG(java.io.OutputStream, org.jfree.chart.JFreeChart, int, int)"><!-- --></A><H3>
writeChartAsJPEG</H3>
<PRE>
public static void <B>writeChartAsJPEG</B>(java.io.OutputStream&nbsp;out,
                                    <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                    int&nbsp;width,
                                    int&nbsp;height)
                             throws java.io.IOException</PRE>
<DL>
<DD>Writes a chart to an output stream in JPEG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeChartAsJPEG(java.io.OutputStream, float, org.jfree.chart.JFreeChart, int, int)"><!-- --></A><H3>
writeChartAsJPEG</H3>
<PRE>
public static void <B>writeChartAsJPEG</B>(java.io.OutputStream&nbsp;out,
                                    float&nbsp;quality,
                                    <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                    int&nbsp;width,
                                    int&nbsp;height)
                             throws java.io.IOException</PRE>
<DL>
<DD>Writes a chart to an output stream in JPEG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>quality</CODE> - the quality setting.<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeChartAsJPEG(java.io.OutputStream, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
writeChartAsJPEG</H3>
<PRE>
public static void <B>writeChartAsJPEG</B>(java.io.OutputStream&nbsp;out,
                                    <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                    int&nbsp;width,
                                    int&nbsp;height,
                                    <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)
                             throws java.io.IOException</PRE>
<DL>
<DD>Writes a chart to an output stream in JPEG format. This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - the chart rendering info (<code>null</code> permitted).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="writeChartAsJPEG(java.io.OutputStream, float, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
writeChartAsJPEG</H3>
<PRE>
public static void <B>writeChartAsJPEG</B>(java.io.OutputStream&nbsp;out,
                                    float&nbsp;quality,
                                    <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                    int&nbsp;width,
                                    int&nbsp;height,
                                    <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)
                             throws java.io.IOException</PRE>
<DL>
<DD>Writes a chart to an output stream in JPEG format.  This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream (<code>null</code> not permitted).<DD><CODE>quality</CODE> - the output quality (0.0f to 1.0f).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - the chart rendering info (<code>null</code> permitted).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsJPEG(java.io.File, org.jfree.chart.JFreeChart, int, int)"><!-- --></A><H3>
saveChartAsJPEG</H3>
<PRE>
public static void <B>saveChartAsJPEG</B>(java.io.File&nbsp;file,
                                   <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                   int&nbsp;width,
                                   int&nbsp;height)
                            throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to a file in JPEG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsJPEG(java.io.File, float, org.jfree.chart.JFreeChart, int, int)"><!-- --></A><H3>
saveChartAsJPEG</H3>
<PRE>
public static void <B>saveChartAsJPEG</B>(java.io.File&nbsp;file,
                                   float&nbsp;quality,
                                   <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                   int&nbsp;width,
                                   int&nbsp;height)
                            throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to a file in JPEG format.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file (<code>null</code> not permitted).<DD><CODE>quality</CODE> - the JPEG quality setting.<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsJPEG(java.io.File, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
saveChartAsJPEG</H3>
<PRE>
public static void <B>saveChartAsJPEG</B>(java.io.File&nbsp;file,
                                   <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                   int&nbsp;width,
                                   int&nbsp;height,
                                   <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)
                            throws java.io.IOException</PRE>
<DL>
<DD>Saves a chart to a file in JPEG format.  This method allows you to pass in a 
 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart"><CODE>ChartRenderingInfo</CODE></A> object, to collect information about the chart 
 dimensions/entities.  You will need this info if you want to create an HTML image map.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the file name (<code>null</code> not permitted).<DD><CODE>chart</CODE> - the chart (<code>null</code> not permitted).<DD><CODE>width</CODE> - the image width.<DD><CODE>height</CODE> - the image height.<DD><CODE>info</CODE> - the chart rendering info (<code>null</code> permitted).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there are any I/O errors.</DL>
</DD>
</DL>
<HR>

<A NAME="saveChartAsJPEG(java.io.File, float, org.jfree.chart.JFreeChart, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
saveChartAsJPEG</H3>
<PRE>
public static void <B>saveChartAsJPEG</B>(java.io.File&nbsp;file,
                                   float&nbsp;quality,
                                   <A HREF="../../../org/jfree/chart/JFreeChart.html" title="class in org.jfree.chart">JFreeChart</A>&nbsp;chart,
                                   int&nbsp;width,
                                   int&nbsp;height,