simpleexamplesource.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 01:36:26 CEST 2008 --><TITLE>SimpleExampleSource (RapidMiner Class Documentation)</TITLE><META NAME="keywords" CONTENT="com.rapidminer.operator.io.SimpleExampleSource class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="SimpleExampleSource (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/SimpleExampleSource.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/operator/io/ResultWriter.html" title="class in com.rapidminer.operator.io"><B>PREV CLASS</B></A> <A HREF="../../../../com/rapidminer/operator/io/SparseFormatExampleSource.html" title="class in com.rapidminer.operator.io"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?com/rapidminer/operator/io/SimpleExampleSource.html" target="_top"><B>FRAMES</B></A> <A HREF="SimpleExampleSource.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 | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <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.operator.io</FONT><BR>Class SimpleExampleSource</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/rapidminer/operator/Operator.html" title="class in com.rapidminer.operator">com.rapidminer.operator.Operator</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.rapidminer.operator.io.SimpleExampleSource</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/rapidminer/gui/wizards/ConfigurationListener.html" title="interface in com.rapidminer.gui.wizards">ConfigurationListener</A>, <A HREF="../../../../com/rapidminer/gui/wizards/PreviewListener.html" title="interface in com.rapidminer.gui.wizards">PreviewListener</A>, <A HREF="../../../../com/rapidminer/parameter/ParameterHandler.html" title="interface in com.rapidminer.parameter">ParameterHandler</A>, <A HREF="../../../../com/rapidminer/tools/LoggingHandler.html" title="interface in com.rapidminer.tools">LoggingHandler</A></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/rapidminer/operator/io/CSVExampleSource.html" title="class in com.rapidminer.operator.io">CSVExampleSource</A></DD></DL><HR><DL><DT><PRE>public class <B>SimpleExampleSource</B><DT>extends <A HREF="../../../../com/rapidminer/operator/Operator.html" title="class in com.rapidminer.operator">Operator</A></DL></PRE><P><p> This operator reads an example set from (a) file(s). Probably you can use the default parameter values for the most file formats (including the format produced by the ExampleSetWriter, CSV, ...). In fact, in many cases this operator is more appropriate for CSV based file formats than the <A HREF="../../../../com/rapidminer/operator/io/CSVExampleSource.html" title="class in com.rapidminer.operator.io"><CODE>CSVExampleSource</CODE></A> operator itself. </p> <p> In contrast to the usual ExampleSource operator this operator is able to read the attribute names from the first line of the data file. However, there is one restriction: the data can only be read from one file instead of multiple files. If you need a fully flexible operator for data loading you should use the more powerful ExampleSource operator. </p> <p> The column split points can be defined with regular expressions (please refer to the Java API). The default split parameter ",\s*|;\s*|\s+" should work for most file formats. This regular expression describes the following column separators <ul> <li>the character "," followed by a whitespace of arbitrary length (also no white space)</li> <li>the character ";" followed by a whitespace of arbitrary length (also no white space)</li> <li>a whitespace of arbitrary length (min. 1)</li> </ul> A logical XOR is defined by "|". Other useful separators might be "\t" for tabulars, " " for a single whitespace, and "\s" for any whitespace. </p> <p> Quoting is also possible with ". However, using quotes slows down parsing and is therefore not recommended. The user should ensure that the split characters are not included in the data columns and that quotes are not needed. Additionally you can specify comment characters which can be used at arbitrary locations of the data lines. Unknown attribute values can be marked with empty strings or a question mark. </p><P><P><DL><DT><B>Version:</B></DT> <DD>$Id: SimpleExampleSource.java,v 1.8 2006/04/12 18:04:24 ingomierswa Exp $</DD><DT><B>Author:</B></DT> <DD>Ingo Mierswa</DD><DT><B>Keywords:</B></DT> <DD>csv</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_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>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/rapidminer/operator/io/SimpleExampleSource.html#PARAMETER_COLUMN_SEPARATORS">PARAMETER_COLUMN_SEPARATORS</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/rapidminer/operator/io/SimpleExampleSource.html#PARAMETER_COMMENT_CHARS">PARAMETER_COMMENT_CHARS</A></B></CODE><BR> The parameter name for "Lines beginning with these characters are ignored.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/rapidminer/operator/io/SimpleExampleSource.html#PARAMETER_DATAMANAGEMENT">PARAMETER_DATAMANAGEMENT</A></B></CODE><BR> The parameter name for "Determines, how the data is represented internally.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor">⌨️ 快捷键说明
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