org.encog.util
Class ReadCSV

java.lang.Object
  org.encog.util.ReadCSV

public class ReadCSV
extends java.lang.Object

Read and parse CSV format files.

Constructor Summary

ReadCSV(java.io.InputStream is, boolean headers, char delim)
Construct a CSV reader from an input stream.

ReadCSV(java.lang.String filename, boolean headers, char delim)
Construct a CSV reader from a filename.

Method Summary

void	close() Close the file.
static java.lang.String	displayDate(java.util.Date date) Format a date.
static double[]	fromCommas(java.lang.String str) Get an array of double's from a string of comma separated text.
java.lang.String	get(int i) Get the specified column as a string.
java.lang.String	get(java.lang.String column) Get the column by its string name, as a string.
int	getColumnCount() Get the column count.
java.util.Date	getDate(java.lang.String column) Get the column as a date.
double	getDouble(int index) Get the column as a double specified by index.
double	getDouble(java.lang.String column) Get the specified column as a double.
int	getInt(java.lang.String col) Obtain a column as an integer referenced by a string.
boolean	next() Read the next line.
static java.util.Date	parseDate(java.lang.String when) Parse a date.
static void	toCommas(java.lang.StringBuilder result, double[] data) Convert an array of doubles to a comma separated list.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReadCSV

public ReadCSV(java.io.InputStream is,
               boolean headers,
               char delim)

Construct a CSV reader from an input stream.

Parameters:

is - The InputStream to read from.

headers - Are headers present?

delim - What is the delimiter.

ReadCSV

public ReadCSV(java.lang.String filename,
               boolean headers,
               char delim)

Construct a CSV reader from a filename.

Parameters:

filename - The filename.

headers - The headers.

delim - The delimiter.

Method Detail

displayDate

public static java.lang.String displayDate(java.util.Date date)

Format a date.

Parameters:

date - The date to format.

Returns:

The formatted date.

fromCommas

public static double[] fromCommas(java.lang.String str)

Get an array of double's from a string of comma separated text.

Parameters:

str - The string that contains a list of numbers.

Returns:

An array of doubles parsed from the string.

parseDate

public static java.util.Date parseDate(java.lang.String when)

Parse a date.

Parameters:

when - The date string.

Returns:

The parsed date.

toCommas

public static void toCommas(java.lang.StringBuilder result,
                            double[] data)

Convert an array of doubles to a comma separated list.

Parameters:

result - This string will have the values appended to it.

data - The array of doubles to use.

close

public void close()

Close the file.

get

public java.lang.String get(int i)

Get the specified column as a string.

Parameters:

i - The column index, starting at zero.

Returns:

The column as a string.

get

public java.lang.String get(java.lang.String column)

Get the column by its string name, as a string. This will only work if column headers were defined that have string names.

Parameters:

column - The column name.

Returns:

The column data as a string.

getColumnCount

public int getColumnCount()

Get the column count.

Returns:

The column count.

getDate

public java.util.Date getDate(java.lang.String column)

Get the column as a date.

Parameters:

column - The column header name.

Returns:

The column as a date.

getDouble

public double getDouble(int index)

Get the column as a double specified by index.

Parameters:

index - The column index, starting at zero.

Returns:

The data at the specified column.

getDouble

public double getDouble(java.lang.String column)

Get the specified column as a double.

Parameters:

column - The column name that we want to get.

Returns:

The column data as a double.

getInt

public int getInt(java.lang.String col)

Obtain a column as an integer referenced by a string.

Parameters:

col - The column header name being read.

Returns:

The column data as an integer.

next

public boolean next()

Read the next line.

Returns:

True if there are more lines to read.