logarithmicaxis.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="setAllowNegativesFlag(boolean)"><!-- --></A><H3>
setAllowNegativesFlag</H3>
<PRE>
public void <B>setAllowNegativesFlag</B>(boolean&nbsp;flgVal)</PRE>
<DL>
<DD>Sets the 'allowNegativesFlag' flag; true to allow negative values
 in data, false to be able to plot positive values arbitrarily close to zero.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flgVal</CODE> - the new value of the flag.</DL>
</DD>
</DL>
<HR>

<A NAME="getAllowNegativesFlag()"><!-- --></A><H3>
getAllowNegativesFlag</H3>
<PRE>
public boolean <B>getAllowNegativesFlag</B>()</PRE>
<DL>
<DD>Returns the 'allowNegativesFlag' flag; true to allow negative values
 in data, false to be able to plot positive values arbitrarily close
 to zero.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the flag.</DL>
</DD>
</DL>
<HR>

<A NAME="setStrictValuesFlag(boolean)"><!-- --></A><H3>
setStrictValuesFlag</H3>
<PRE>
public void <B>setStrictValuesFlag</B>(boolean&nbsp;flgVal)</PRE>
<DL>
<DD>Sets the 'strictValuesFlag' flag; if true and 'allowNegativesFlag'
 is false then this axis will throw a runtime exception if any of its
 values are less than or equal to zero; if false then the axis will
 adjust for values less than or equal to zero as needed.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flgVal</CODE> - true for strict enforcement.</DL>
</DD>
</DL>
<HR>

<A NAME="getStrictValuesFlag()"><!-- --></A><H3>
getStrictValuesFlag</H3>
<PRE>
public boolean <B>getStrictValuesFlag</B>()</PRE>
<DL>
<DD>Returns the 'strictValuesFlag' flag; if true and 'allowNegativesFlag'
 is false then this axis will throw a runtime exception if any of its
 values are less than or equal to zero; if false then the axis will
 adjust for values less than or equal to zero as needed.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true if strict enforcement is enabled.</DL>
</DD>
</DL>
<HR>

<A NAME="setExpTickLabelsFlag(boolean)"><!-- --></A><H3>
setExpTickLabelsFlag</H3>
<PRE>
public void <B>setExpTickLabelsFlag</B>(boolean&nbsp;flgVal)</PRE>
<DL>
<DD>Sets the 'expTickLabelsFlag' flag.  If the 'log10TickLabelsFlag'
 is false then this will set whether or not "1e#"-style tick labels
 are used.  The default is to use "1e#"-style tick labels.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flgVal</CODE> - true for "1e#"-style tick labels, false for
 log10 or regular numeric tick labels.</DL>
</DD>
</DL>
<HR>

<A NAME="getExpTickLabelsFlag()"><!-- --></A><H3>
getExpTickLabelsFlag</H3>
<PRE>
public boolean <B>getExpTickLabelsFlag</B>()</PRE>
<DL>
<DD>Returns the 'expTickLabelsFlag' flag.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true for "1e#"-style tick labels, false for log10 or
 regular numeric tick labels.</DL>
</DD>
</DL>
<HR>

<A NAME="setLog10TickLabelsFlag(boolean)"><!-- --></A><H3>
setLog10TickLabelsFlag</H3>
<PRE>
public void <B>setLog10TickLabelsFlag</B>(boolean&nbsp;flag)</PRE>
<DL>
<DD>Sets the 'log10TickLabelsFlag' flag.  The default value is false.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flag</CODE> - true for "10^n"-style tick labels, false for "1e#"-style
 or regular numeric tick labels.</DL>
</DD>
</DL>
<HR>

<A NAME="getLog10TickLabelsFlag()"><!-- --></A><H3>
getLog10TickLabelsFlag</H3>
<PRE>
public boolean <B>getLog10TickLabelsFlag</B>()</PRE>
<DL>
<DD>Returns the 'log10TickLabelsFlag' flag.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true for "10^n"-style tick labels, false for "1e#"-style
 or regular numeric tick labels.</DL>
</DD>
</DL>
<HR>

<A NAME="setRange(org.jfree.data.Range)"><!-- --></A><H3>
setRange</H3>
<PRE>
public void <B>setRange</B>(<A HREF="../../../../org/jfree/data/Range.html" title="class in org.jfree.data">Range</A>&nbsp;range)</PRE>
<DL>
<DD>Overridden version that calls original and then sets up flag for
 log axis processing.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#setRange(org.jfree.data.Range)">setRange</A></CODE> in class <CODE><A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>range</CODE> - the new range.</DL>
</DD>
</DL>
<HR>

<A NAME="setupSmallLogFlag()"><!-- --></A><H3>
setupSmallLogFlag</H3>
<PRE>
protected void <B>setupSmallLogFlag</B>()</PRE>
<DL>
<DD>Sets up flag for log axis processing.  Set true if negative values
 not allowed and the lower bound is between 0 and 10.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setupNumberFmtObj()"><!-- --></A><H3>
setupNumberFmtObj</H3>
<PRE>
protected void <B>setupNumberFmtObj</B>()</PRE>
<DL>
<DD>Sets up the number formatter object according to the
 'expTickLabelsFlag' flag.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="switchedLog10(double)"><!-- --></A><H3>
switchedLog10</H3>
<PRE>
protected double <B>switchedLog10</B>(double&nbsp;val)</PRE>
<DL>
<DD>Returns the log10 value, depending on if values between 0 and
 1 are being plotted.  If negative values are not allowed and
 the lower bound is between 0 and 10 then a normal log is
 returned; otherwise the returned value is adjusted if the
 given value is less than 10.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val</CODE> - the value.
<DT><B>Returns:</B><DD>log<sub>10</sub>(val).</DL>
</DD>
</DL>
<HR>

<A NAME="adjustedLog10(double)"><!-- --></A><H3>
adjustedLog10</H3>
<PRE>
public double <B>adjustedLog10</B>(double&nbsp;val)</PRE>
<DL>
<DD>Returns an adjusted log10 value for graphing purposes.  The first
 adjustment is that negative values are changed to positive during
 the calculations, and then the answer is negated at the end.  The
 second is that, for values less than 10, an increasingly large
 (0 to 1) scaling factor is added such that at 0 the value is
 adjusted to 1, resulting in a returned result of 0.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val</CODE> - value for which log10 should be calculated.
<DT><B>Returns:</B><DD>an adjusted log<sub>10</sub>(val).</DL>
</DD>
</DL>
<HR>

<A NAME="computeLogFloor(double)"><!-- --></A><H3>
computeLogFloor</H3>
<PRE>