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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_13) on Mon Jul 14 01:33:47 CEST 2008 --><TITLE>DataTable (RapidMiner Class Documentation)</TITLE><META NAME="keywords" CONTENT="com.rapidminer.datatable.DataTable interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="DataTable (RapidMiner Class Documentation)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/DataTable.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../com/rapidminer/datatable/CorrelationMatrixRow2DataTableRowWrapper.html" title="class in com.rapidminer.datatable"><B>PREV CLASS</B></A> <A HREF="../../../com/rapidminer/datatable/DataTableExampleSetAdapter.html" title="class in com.rapidminer.datatable"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?com/rapidminer/datatable/DataTable.html" target="_top"><B>FRAMES</B></A> <A HREF="DataTable.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">com.rapidminer.datatable</FONT><BR>Interface DataTable</H2><DL><DT><B>All Superinterfaces:</B> <DD>java.lang.Iterable<<A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A>>, <A HREF="../../../com/rapidminer/report/Reportable.html" title="interface in com.rapidminer.report">Reportable</A>, <A HREF="../../../com/rapidminer/report/Tableable.html" title="interface in com.rapidminer.report">Tableable</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../com/rapidminer/datatable/AbstractDataTable.html" title="class in com.rapidminer.datatable">AbstractDataTable</A>, <A HREF="../../../com/rapidminer/datatable/DataTableExampleSetAdapter.html" title="class in com.rapidminer.datatable">DataTableExampleSetAdapter</A>, <A HREF="../../../com/rapidminer/datatable/DataTableKernelModelAdapter.html" title="class in com.rapidminer.datatable">DataTableKernelModelAdapter</A>, <A HREF="../../../com/rapidminer/datatable/DataTablePairwiseMatrixExtractionAdapter.html" title="class in com.rapidminer.datatable">DataTablePairwiseMatrixExtractionAdapter</A>, <A HREF="../../../com/rapidminer/datatable/DataTableSymmetricalMatrixAdapter.html" title="class in com.rapidminer.datatable">DataTableSymmetricalMatrixAdapter</A>, <A HREF="../../../com/rapidminer/datatable/SimpleDataTable.html" title="class in com.rapidminer.datatable">SimpleDataTable</A></DD></DL><HR><DL><DT><PRE>public interface <B>DataTable</B><DT>extends java.lang.Iterable<<A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A>>, <A HREF="../../../com/rapidminer/report/Tableable.html" title="interface in com.rapidminer.report">Tableable</A></DL></PRE><P>A data table that contains Object arrays that record process results, data, etc. Instances of this class are automatically created by <A HREF="../../../com/rapidminer/Process.html#getDataTables()"><CODE>Process.getDataTables()</CODE></A> and are used mainly by the <A HREF="../../../com/rapidminer/operator/visualization/ProcessLogOperator.html" title="class in com.rapidminer.operator.visualization"><CODE>ProcessLogOperator</CODE></A>. On the other hand, also <A HREF="../../../com/rapidminer/example/ExampleSet.html" title="interface in com.rapidminer.example"><CODE>ExampleSet</CODE></A>s can also be used as an data table object.<P><P><DL><DT><B>Version:</B></DT> <DD>$Id: DataTable.java,v 1.6 2008/07/07 10:52:20 ingomierswa Exp $</DD><DT><B>Author:</B></DT> <DD>Ingo Mierswa</DD></DL><HR><P><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></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="../../../com/rapidminer/datatable/DataTable.html#add(com.rapidminer.datatable.DataTableRow)">add</A></B>(<A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A> row)</CODE><BR> Adds the given <A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable"><CODE>DataTableRow</CODE></A> to the table.</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="../../../com/rapidminer/datatable/DataTable.html#addDataTableListener(com.rapidminer.datatable.DataTableListener)">addDataTableListener</A></B>(<A HREF="../../../com/rapidminer/datatable/DataTableListener.html" title="interface in com.rapidminer.datatable">DataTableListener</A> dataTableListener)</CODE><BR> Adds a table listener listening for data changes.</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="../../../com/rapidminer/datatable/DataTable.html#containsMissingValues()">containsMissingValues</A></B>()</CODE><BR> Returns true if this data table contains missing values.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getColumnIndex(java.lang.String)">getColumnIndex</A></B>(java.lang.String name)</CODE><BR> Returns the column index of the column with the given name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getColumnName(int)">getColumnName</A></B>(int i)</CODE><BR> Returns the name of the i-th column.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getColumnNames()">getColumnNames</A></B>()</CODE><BR> Returns an array of all column names.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getColumnWeight(int)">getColumnWeight</A></B>(int i)</CODE><BR> Returns the weight of the column or Double.NaN if no weight is available.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getName()">getName</A></B>()</CODE><BR> Returns the name of this data table.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getNumberOfColumns()">getNumberOfColumns</A></B>()</CODE><BR> Returns the total number of columns.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getNumberOfRows()">getNumberOfRows</A></B>()</CODE><BR> Returns the total number of rows.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getNumberOfSpecialColumns()">getNumberOfSpecialColumns</A></B>()</CODE><BR> Returns the total number of special columns.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getNumberOfValues(int)">getNumberOfValues</A></B>(int column)</CODE><BR> Returns the number of different values for the i-th column.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getRow(int)">getRow</A></B>(int index)</CODE><BR> Returns the data table row with the given index.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#getValueAsString(com.rapidminer.datatable.DataTableRow, int)">getValueAsString</A></B>(<A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A> row, int column)</CODE><BR> Must deliver the proper value as string, i.e. the mapped value for nominal columns.</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="../../../com/rapidminer/datatable/DataTable.html#isDate(int)">isDate</A></B>(int index)</CODE><BR> Indicates if the column with the given index is nominal.</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="../../../com/rapidminer/datatable/DataTable.html#isDateTime(int)">isDateTime</A></B>(int index)</CODE><BR> Indicates if the column with the given index is nominal.</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="../../../com/rapidminer/datatable/DataTable.html#isNominal(int)">isNominal</A></B>(int index)</CODE><BR> Indicates if the column with the given index is nominal.</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="../../../com/rapidminer/datatable/DataTable.html#isNumerical(int)">isNumerical</A></B>(int index)</CODE><BR> Indicates if the column with the given index is nominal.</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="../../../com/rapidminer/datatable/DataTable.html#isSpecial(int)">isSpecial</A></B>(int column)</CODE><BR> Returns true if this column is a special column which might usually not be used for some plotters, for example weights or labels.</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="../../../com/rapidminer/datatable/DataTable.html#isSupportingColumnWeights()">isSupportingColumnWeights</A></B>()</CODE><BR> Returns true if this data table is supporting column weights.</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="../../../com/rapidminer/datatable/DataTable.html#isTime(int)">isTime</A></B>(int index)</CODE><BR> Indicates if the column with the given index is nominal.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Iterator<<A HREF="../../../com/rapidminer/datatable/DataTableRow.html" title="interface in com.rapidminer.datatable">DataTableRow</A>></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/datatable/DataTable.html#iterator()">iterator</A></B>()</CODE>⌨️ 快捷键说明
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