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Class weka.core.converters.CSVLoader

java.lang.Object
    |
    +----weka.core.converters.AbstractLoader
            |
            +----weka.core.converters.CSVLoader

public class CSVLoader
extends AbstractLoader
Reads a text file that is comma or tab delimited..

Version:
$Revision: 1.2 $
Author:
Mark Hall (mhall@cs.waikato.ac.nz)
See Also:
Loader

Constructor Index

 o CSVLoader()
 

Method Index

 o getDataSet()
Return the full data set.
 o getNextInstance()
CSVLoader is unable to process a data set incrementally.
 o getStructure()
Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
 o globalInfo()
Returns a string describing this attribute evaluator
 o main(String[])
Main method.
 o reset()
Resets the loader ready to read a new data set
 o setSource(File)
Resets the Loader object and sets the source of the data set to be the supplied File object.

Constructor Detail

 o CSVLoader
public CSVLoader()

Method Detail

 o globalInfo
public java.lang.String globalInfo()
          Returns a string describing this attribute evaluator
Returns:
a description of the evaluator suitable for displaying in the explorer/experimenter gui
 o reset
public void reset()
          Resets the loader ready to read a new data set
 o setSource
public void setSource(java.io.File file) throws java.io.IOException
          Resets the Loader object and sets the source of the data set to be the supplied File object.
Parameters:
file - the source file.
Throws:
java.io.IOException - if an error occurs
Overrides:
setSource in class AbstractLoader
 o getStructure
public Instances getStructure() throws java.io.IOException
          Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Returns:
the structure of the data set as an empty set of Instances
Throws:
java.io.IOException - if an error occurs
Overrides:
getStructure in class AbstractLoader
 o getDataSet
public Instances getDataSet() throws java.io.IOException
          Return the full data set. If the structure hasn't yet been determined by a call to getStructure then method should do so before processing the rest of the data set.
Returns:
the structure of the data set as an empty set of Instances
Throws:
java.io.IOException - if there is no source or parsing fails
Overrides:
getDataSet in class AbstractLoader
 o getNextInstance
public Instance getNextInstance() throws java.io.IOException
          CSVLoader is unable to process a data set incrementally.
Returns:
never returns without throwing an exception
Throws:
java.io.IOException - always. CSVLoader is unable to process a data set incrementally.
Overrides:
getNextInstance in class AbstractLoader
 o main
public static void main(java.lang.String args[])
          Main method.
Parameters:
args - should contain the name of an input file.

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