filedatarowreader.html
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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 01:33:50 CEST 2008 --><TITLE>FileDataRowReader (RapidMiner Class Documentation)</TITLE><META NAME="keywords" CONTENT="com.rapidminer.example.table.FileDataRowReader class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="FileDataRowReader (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/FileDataRowReader.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/example/table/ExampleTable.html" title="interface in com.rapidminer.example.table"><B>PREV CLASS</B></A> <A HREF="../../../../com/rapidminer/example/table/FloatArrayDataRow.html" title="class in com.rapidminer.example.table"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?com/rapidminer/example/table/FileDataRowReader.html" target="_top"><B>FRAMES</B></A> <A HREF="FileDataRowReader.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 | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <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.example.table</FONT><BR>Class FileDataRowReader</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/rapidminer/example/table/AbstractDataRowReader.html" title="class in com.rapidminer.example.table">com.rapidminer.example.table.AbstractDataRowReader</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.rapidminer.example.table.FileDataRowReader</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/rapidminer/example/table/DataRowReader.html" title="interface in com.rapidminer.example.table">DataRowReader</A>, java.util.Iterator<<A HREF="../../../../com/rapidminer/example/table/DataRow.html" title="class in com.rapidminer.example.table">DataRow</A>></DD></DL><HR><DL><DT><PRE>public class <B>FileDataRowReader</B><DT>extends <A HREF="../../../../com/rapidminer/example/table/AbstractDataRowReader.html" title="class in com.rapidminer.example.table">AbstractDataRowReader</A></DL></PRE><P><p> FileDataRowReader implements a DataRowReader that reads DataRows from a file. This is the main data reader for many file formats (including csv) and is used by the ExampleSource operator and the attribute editor. </p> <p> This class supports the reading of data from multiple source files. Each attribute (including special attributes like labels, weights, ...) might be read from another file. Please note that only the minimum number of lines of all files will be read, i.e. if one of the data source files has less lines than the others, only this number of data rows will be read. </p> <p> The split points can be defined with regular expressions (please refer to the Java API). Quoting is possible but not suggested since the runtime is higher. The user should ensure that the split characters are not included in the data columns. Please refer to <A HREF="../../../../com/rapidminer/example/table/RapidMinerLineReader.html" title="class in com.rapidminer.example.table"><CODE>RapidMinerLineReader</CODE></A> for further information. </p> <p> Unknown attribute values can be marked with empty strings or "?". </p><P><P><DL><DT><B>Version:</B></DT> <DD>$Id: FileDataRowReader.java,v 2.21 2006/03/27 13:21:58 ingomierswa Exp $</DD><DT><B>Author:</B></DT> <DD>Ingo Mierswa</DD></DL><HR><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_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>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/rapidminer/example/table/FileDataRowReader.html#FileDataRowReader(com.rapidminer.example.table.DataRowFactory, java.util.List, double, int, java.lang.String, char[], boolean, boolean, java.nio.charset.Charset, com.rapidminer.tools.RandomGenerator)">FileDataRowReader</A></B>(<A HREF="../../../../com/rapidminer/example/table/DataRowFactory.html" title="class in com.rapidminer.example.table">DataRowFactory</A> factory, java.util.List<<A HREF="../../../../com/rapidminer/tools/att/AttributeDataSource.html" title="class in com.rapidminer.tools.att">AttributeDataSource</A>> attributeDataSources, double sampleRatio, int sampleSize, java.lang.String separatorsRegExpr, char[] commentChars, boolean useQuotes, boolean trimLines, java.nio.charset.Charset encoding, <A HREF="../../../../com/rapidminer/tools/RandomGenerator.html" title="class in com.rapidminer.tools">RandomGenerator</A> random)</CODE><BR> Constructs a new FileDataRowReader.</TD></TR></TABLE> <!-- ========== 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> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/rapidminer/example/table/FileDataRowReader.html#hasNext()">hasNext</A></B>()</CODE><BR> Checks if another line exists and reads.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../com/rapidminer/example/table/DataRow.html" title="class in com.rapidminer.example.table">DataRow</A></CODE></FONT></TD>⌨️ 快捷键说明
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