categoryaxis.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<PRE>
public double <B>getUpperMargin</B>()</PRE>
<DL>
<DD>Returns the upper margin for the axis.
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</DL>
</DD>
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<DT><B>Returns:</B><DD>the margin.</DL>
</DD>
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<A NAME="setUpperMargin(double)"><!-- --></A><H3>
setUpperMargin</H3>
<PRE>
public void <B>setUpperMargin</B>(double&nbsp;margin)</PRE>
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<DD>Sets the upper margin for the axis and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to all registered
 listeners.
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<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>margin</CODE> - the margin as a percentage of the axis length (for example, 0.05 is five 
                percent).</DL>
</DD>
</DL>
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<A NAME="getCategoryMargin()"><!-- --></A><H3>
getCategoryMargin</H3>
<PRE>
public double <B>getCategoryMargin</B>()</PRE>
<DL>
<DD>Returns the category margin.
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<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the margin.</DL>
</DD>
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<A NAME="setCategoryMargin(double)"><!-- --></A><H3>
setCategoryMargin</H3>
<PRE>
public void <B>setCategoryMargin</B>(double&nbsp;margin)</PRE>
<DL>
<DD>Sets the category margin and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to all registered
 listeners.
 <P>
 The overall category margin is distributed over N-1 gaps, where N is the number of 
 categories on the axis.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>margin</CODE> - the margin as a percentage of the axis length (for example, 0.05 is five 
                percent).</DL>
</DD>
</DL>
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<A NAME="getMaxCategoryLabelWidthRatio()"><!-- --></A><H3>
getMaxCategoryLabelWidthRatio</H3>
<PRE>
public float <B>getMaxCategoryLabelWidthRatio</B>()</PRE>
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<DD>Returns the category label width ratio.
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<DT><B>Returns:</B><DD>the ratio.</DL>
</DD>
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<A NAME="setMaxCategoryLabelWidthRatio(float)"><!-- --></A><H3>
setMaxCategoryLabelWidthRatio</H3>
<PRE>
public void <B>setMaxCategoryLabelWidthRatio</B>(float&nbsp;ratio)</PRE>
<DL>
<DD>Sets the maximum category label width ratio and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to
 all registered listeners.
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<DT><B>Parameters:</B><DD><CODE>ratio</CODE> - the ratio.</DL>
</DD>
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<A NAME="getCategoryLabelPositionOffset()"><!-- --></A><H3>
getCategoryLabelPositionOffset</H3>
<PRE>
public int <B>getCategoryLabelPositionOffset</B>()</PRE>
<DL>
<DD>Returns the offset between the axis and the category labels (before label positioning 
 is taken into account).
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</DL>
</DD>
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<DT><B>Returns:</B><DD>the offset (in Java2D units).</DL>
</DD>
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<A NAME="setCategoryLabelPositionOffset(int)"><!-- --></A><H3>
setCategoryLabelPositionOffset</H3>
<PRE>
public void <B>setCategoryLabelPositionOffset</B>(int&nbsp;offset)</PRE>
<DL>
<DD>Sets the offset between the axis and the category labels (before label positioning 
 is taken into account).
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</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>offset</CODE> - the offset (in Java2D units).</DL>
</DD>
</DL>
<HR>

<A NAME="getCategoryLabelPositions()"><!-- --></A><H3>
getCategoryLabelPositions</H3>
<PRE>
public <A HREF="../../../../org/jfree/chart/axis/CategoryLabelPositions.html" title="class in org.jfree.chart.axis">CategoryLabelPositions</A> <B>getCategoryLabelPositions</B>()</PRE>
<DL>
<DD>Returns the category label position specification (this contains label positioning info 
 for all four possible axis locations).
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</DL>
</DD>
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<DT><B>Returns:</B><DD>the positions (never <code>null</code>).</DL>
</DD>
</DL>
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<A NAME="setCategoryLabelPositions(org.jfree.chart.axis.CategoryLabelPositions)"><!-- --></A><H3>
setCategoryLabelPositions</H3>
<PRE>
public void <B>setCategoryLabelPositions</B>(<A HREF="../../../../org/jfree/chart/axis/CategoryLabelPositions.html" title="class in org.jfree.chart.axis">CategoryLabelPositions</A>&nbsp;positions)</PRE>
<DL>
<DD>Sets the category label position specification for the axis and sends an 
 <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to all registered listeners.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>positions</CODE> - the positions (<code>null</code> not permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="addCategoryLabelToolTip(java.lang.Comparable, java.lang.String)"><!-- --></A><H3>
addCategoryLabelToolTip</H3>
<PRE>
public void <B>addCategoryLabelToolTip</B>(java.lang.Comparable&nbsp;category,
                                    java.lang.String&nbsp;tooltip)</PRE>
<DL>
<DD>Adds a tooltip to the specified category and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to 
 all registered listeners.
<P>
<DD><DL>
</DL>
</DD>
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<DT><B>Parameters:</B><DD><CODE>category</CODE> - the category (<code>null<code> not permitted).<DD><CODE>tooltip</CODE> - the tooltip text (<code>null</code> permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="removeCategoryLabelToolTip(java.lang.Comparable)"><!-- --></A><H3>
removeCategoryLabelToolTip</H3>
<PRE>
public void <B>removeCategoryLabelToolTip</B>(java.lang.Comparable&nbsp;category)</PRE>
<DL>
<DD>Removes the tooltip for the specified category and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to 
 all registered listeners.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>category</CODE> - the category (<code>null<code> not permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="clearCategoryLabelToolTips()"><!-- --></A><H3>
clearCategoryLabelToolTips</H3>
<PRE>
public void <B>clearCategoryLabelToolTips</B>()</PRE>
<DL>
<DD>Clears the category label tooltips and sends an <A HREF="../../../../org/jfree/chart/event/AxisChangeEvent.html" title="class in org.jfree.chart.event"><CODE>AxisChangeEvent</CODE></A> to all registered
 listeners.
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</DL>
</DD>
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</DD>
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<HR>

<A NAME="getCategoryJava2DCoordinate(org.jfree.chart.axis.CategoryAnchor, int, int, java.awt.geom.Rectangle2D, org.jfree.ui.RectangleEdge)"><!-- --></A><H3>
getCategoryJava2DCoordinate</H3>
<PRE>
public double <B>getCategoryJava2DCoordinate</B>(<A HREF="../../../../org/jfree/chart/axis/CategoryAnchor.html" title="class in org.jfree.chart.axis">CategoryAnchor</A>&nbsp;anchor,
                                          int&nbsp;category,
                                          int&nbsp;categoryCount,
                                          java.awt.geom.Rectangle2D&nbsp;area,
                                          org.jfree.ui.RectangleEdge&nbsp;edge)</PRE>
<DL>
<DD>Returns the Java 2D coordinate for a category.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>anchor</CODE> - the anchor point.<DD><CODE>category</CODE> - the category index.<DD><CODE>categoryCount</CODE> - the category count.<DD><CODE>area</CODE> - the data area.<DD><CODE>edge</CODE> - the location of the axis.