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<BR> Returns an enumeration describing the available options.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#main(java.lang.String[])">main</A></B>(java.lang.String[] argv)</CODE><BR> Main method for testing this class.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#setExpression(java.lang.String)">setExpression</A></B>(java.lang.String expr)</CODE><BR> Set the expression to apply</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#setIgnoreRange(java.lang.String)">setIgnoreRange</A></B>(java.lang.String rangeList)</CODE><BR> Set which attributes are to be ignored</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#setInputFormat(weka.core.Instances)">setInputFormat</A></B>(<A HREF="../../../../weka/core/Instances.html" title="class in weka.core">Instances</A> instanceInfo)</CODE><BR> Sets the format of the input instances.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#setInvertSelection(boolean)">setInvertSelection</A></B>(boolean invert)</CODE><BR> Set whether selected columns should be select or unselect.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../weka/filters/unsupervised/attribute/MathExpression.html#setOptions(java.lang.String[])">setOptions</A></B>(java.lang.String[] options)</CODE><BR> Parses a given list of options.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_weka.filters.unsupervised.attribute.PotentialClassIgnorer"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class weka.filters.unsupervised.attribute.<A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html" title="class in weka.filters.unsupervised.attribute">PotentialClassIgnorer</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#getIgnoreClass()">getIgnoreClass</A>, <A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#getOutputFormat()">getOutputFormat</A>, <A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#ignoreClassTipText()">ignoreClassTipText</A>, <A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#setIgnoreClass(boolean)">setIgnoreClass</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_weka.filters.Filter"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class weka.filters.<A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../weka/filters/Filter.html#batchFilterFile(weka.filters.Filter, java.lang.String[])">batchFilterFile</A>, <A HREF="../../../../weka/filters/Filter.html#filterFile(weka.filters.Filter, java.lang.String[])">filterFile</A>, <A HREF="../../../../weka/filters/Filter.html#isFirstBatchDone()">isFirstBatchDone</A>, <A HREF="../../../../weka/filters/Filter.html#isNewBatch()">isNewBatch</A>, <A HREF="../../../../weka/filters/Filter.html#isOutputFormatDefined()">isOutputFormatDefined</A>, <A HREF="../../../../weka/filters/Filter.html#makeCopies(weka.filters.Filter, int)">makeCopies</A>, <A HREF="../../../../weka/filters/Filter.html#makeCopy(weka.filters.Filter)">makeCopy</A>, <A HREF="../../../../weka/filters/Filter.html#numPendingOutput()">numPendingOutput</A>, <A HREF="../../../../weka/filters/Filter.html#output()">output</A>, <A HREF="../../../../weka/filters/Filter.html#outputPeek()">outputPeek</A>, <A HREF="../../../../weka/filters/Filter.html#useFilter(weka.core.Instances, weka.filters.Filter)">useFilter</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Field Detail</B></FONT></TH></TR></TABLE><A NAME="m_defaultExpression"><!-- --></A><H3>m_defaultExpression</H3><PRE>public static final java.lang.String <B>m_defaultExpression</B></PRE><DL><DD>The default modification expression<P><DL><DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#weka.filters.unsupervised.attribute.MathExpression.m_defaultExpression">Constant Field Values</A></DL></DL><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><A NAME="MathExpression()"><!-- --></A><H3>MathExpression</H3><PRE>public <B>MathExpression</B>()</PRE><DL><DD>Constructor<P></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="globalInfo()"><!-- --></A><H3>globalInfo</H3><PRE>public java.lang.String <B>globalInfo</B>()</PRE><DL><DD>Returns a string describing this filter<P><DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>a description of the filter suitable for displaying in the explorer/experimenter gui</DL></DD></DL><HR><A NAME="getCapabilities()"><!-- --></A><H3>getCapabilities</H3><PRE>public <A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>getCapabilities</B>()</PRE><DL><DD>Returns the Capabilities of this filter.<P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html#getCapabilities()">getCapabilities</A></CODE> in interface <CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html" title="interface in weka.core">CapabilitiesHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#getCapabilities()">getCapabilities</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL></DD><DD><DL><DT><B>Returns:</B><DD>the capabilities of this object<DT><B>See Also:</B><DD><A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core"><CODE>Capabilities</CODE></A></DL></DD></DL><HR><A NAME="setInputFormat(weka.core.Instances)"><!-- --></A><H3>setInputFormat</H3><PRE>public boolean <B>setInputFormat</B>(<A HREF="../../../../weka/core/Instances.html" title="class in weka.core">Instances</A> instanceInfo) throws java.lang.Exception</PRE><DL><DD>Sets the format of the input instances.<P><DD><DL><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#setInputFormat(weka.core.Instances)">setInputFormat</A></CODE> in class <CODE><A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html" title="class in weka.filters.unsupervised.attribute">PotentialClassIgnorer</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>instanceInfo</CODE> - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).<DT><B>Returns:</B><DD>true if the outputFormat may be collected immediately<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if the input format can't be set successfully</DL></DD></DL><HR><A NAME="input(weka.core.Instance)"><!-- --></A><H3>input</H3><PRE>public boolean <B>input</B>(<A HREF="../../../../weka/core/Instance.html" title="class in weka.core">Instance</A> instance) throws java.lang.Exception</PRE><DL><DD>Input an instance for filtering. Filter requires all training instances be read before producing output.<P><DD><DL><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#input(weka.core.Instance)">input</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>instance</CODE> - the input instance<DT><B>Returns:</B><DD>true if the filtered instance may now be collected with output().<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if no input format has been set.<DD><CODE>java.lang.NullPointerException</CODE> - if the input format has not been defined.<DD><CODE>java.lang.Exception</CODE> - if the input instance was not of the correct format or if there was a problem with the filtering.</DL></DD></DL><HR><A NAME="batchFinished()"><!-- --></A><H3>batchFinished</H3><PRE>public boolean <B>batchFinished</B>() throws java.lang.Exception</PRE><DL><DD>Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances.<P><DD><DL><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#batchFinished()">batchFinished</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL></DD><DD><DL><DT><B>Returns:</B><DD>true if there are instances pending output<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if no input structure has been defined<DD><CODE>java.lang.NullPointerException</CODE> - if no input structure has been defined,<DD><CODE>java.lang.Exception</CODE> - if there was a problem finishing the batch.</DL></DD></DL><HR><A NAME="setOptions(java.lang.String[])"><!-- --></A><H3>setOptions</H3><PRE>public void <B>setOptions</B>(java.lang.String[] options) throws java.lang.Exception</PRE><DL><DD>Parses a given list of options. <p/> <!-- options-start --> Valid options are: <p/> <pre> -unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)</pre> <pre> -E <expression> Specify the expression to apply. Eg. pow(A,6)/(MEAN+MAX) Supported operators are +, -, *, /, pow, log, abs, cos, exp, sqrt, tan, sin, ceil, floor, rint, (, ), MEAN, MAX, MIN, SD, COUNT, SUM, SUMSQUARED, ifelse</pre> <pre> -R <index1,index2-index4,...> Specify list of columns to ignore. First and last are valid indexes. (default none)</pre> <pre> -V Invert matching sense (i.e. only modify specified columns)</pre> <!-- options-end --><P><DD><DL><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/OptionHandler.html#setOptions(java.lang.String[])">setOptions</A></CODE> in interface <CODE><A HREF="../../../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html#setOptions(java.lang.String[])">setOptions</A></CODE> in class <CODE><A HREF="../../../../weka/filters/unsupervised/attribute/PotentialClassIgnorer.html" title="class in weka.filters.unsupervised.attribute">PotentialClassIgnorer</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>options</CODE> - the list of options as an array of strings<DT><B>Throws:</B>⌨️ 快捷键说明
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