ColumnDataReader Class Reference

#include <ColumnDataReader.hpp>

Inherits AbstractDataReader.

Collaboration diagram for ColumnDataReader:
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List of all members.

Public Member Functions

 ColumnDataReader (const std::string &rDirectory, const std::string &rBaseName, bool makeAbsolute=true)
 ColumnDataReader (const FileFinder &rDirectory, const std::string &rBaseName)
std::vector< double > GetValues (const std::string &rVariableName)
std::vector< double > GetValues (const std::string &rVariableName, int fixedDimension)
std::vector< double > GetUnlimitedDimensionValues ()
bool HasValues (const std::string &rVariableName)
unsigned GetFieldWidth ()

Private Member Functions

void PushColumnEntryFromLine (const std::string &rLine, int col)
void ReadColumnFromFile (const std::string &rFilename, int col)
void ReadValueFromFile (const std::string &rFilename, int col, int row)
void CheckFiles (const std::string &rDirectory, const std::string &rBaseName)

Private Attributes

std::map< std::string, int > mVariablesToColumns
std::map< std::string,
std::string > 		mVariablesToUnits
int mNumFixedDimensions
bool mHasUnlimitedDimension
int mNumVariables
std::string mInfoFilename
std::string mDataFilename
std::string mAncillaryFilename
std::vector< double > mValues
unsigned mFieldWidth

Static Private Attributes

static const int SPACING = 2

Detailed Description

A concrete column data reader class.

Definition at line 43 of file ColumnDataReader.hpp.

Constructor & Destructor Documentation

ColumnDataReader::ColumnDataReader ( const std::string &  rDirectory,
const std::string &  rBaseName,
bool  makeAbsolute = true 
)

Read data from the given files into memory. The files should be formatted as if written by ColumnDataWriter, with fixed width columns (except for the header line) and fields in scientific notation.

This will attempt to determine the field width from the input file. However, it needs some data to work with in order to do so. Provided at least one correctly formatted entry exists, it will be able to determine the field width, assuming that space is allowed for 3 digits in the exponent. Release 1.1 and earlier of Chaste only allowed 2 digits for the exponent; we can cope with this provided that the first data entry in the file has another entry immediately to the right of it.

Parameters:
rDirectory The directory the files are stored in
rBaseName The base name of the files to read (i.e. without the extensions)
makeAbsolute Whether to convert directory to an absolute path using the OutputFileHandler (defaults to true)

Definition at line 52 of file ColumnDataReader.cpp.

References CheckFiles(), and OutputFileHandler::GetOutputDirectoryFullPath().

ColumnDataReader::ColumnDataReader ( const FileFinder &  rDirectory,
const std::string &  rBaseName 
)

Alternative constructor using FileFinder to specify the directory files are stored in.

Parameters:
rDirectory The directory the files are stored in
rBaseName The base name of the files to read (i.e. without the extensions)

Definition at line 74 of file ColumnDataReader.cpp.

References CheckFiles(), EXCEPTION, FileFinder::Exists(), FileFinder::GetAbsolutePath(), and FileFinder::IsDir().

Member Function Documentation

void ColumnDataReader::CheckFiles ( const std::string &  rDirectory,
const std::string &  rBaseName 
) [private]

Set up internal data structures based on file structure, checking that they contain data in roughly the expected format.

Parameters:
rDirectory Absolute path of the directory the files are stored in
rBaseName The base name of the files to read (i.e. without the extensions)

Definition at line 84 of file ColumnDataReader.cpp.

References EXCEPTION, FILE_SUFFIX_WIDTH, mAncillaryFilename, mDataFilename, mFieldWidth, mHasUnlimitedDimension, mInfoFilename, mNumFixedDimensions, mNumVariables, mVariablesToColumns, mVariablesToUnits, NOT_READ, and SPACING.

Referenced by ColumnDataReader().

unsigned ColumnDataReader::GetFieldWidth (  ) 

Get the field width (the number of characters (excl. preceding '+' or '-') printed for each data entry in the file).

Definition at line 402 of file ColumnDataReader.cpp.

References mFieldWidth.

std::vector< double > ColumnDataReader::GetUnlimitedDimensionValues (  ) 

Get the entries for a given variable with unlimited dimension.

Definition at line 315 of file ColumnDataReader.cpp.

References EXCEPTION, mAncillaryFilename, mDataFilename, mHasUnlimitedDimension, mNumFixedDimensions, mValues, and ReadColumnFromFile().

std::vector< double > ColumnDataReader::GetValues ( const std::string &  rVariableName,
int  fixedDimension 
) [virtual]

Get the entries for a given variable with fixed dimension.

Parameters:
rVariableName 
fixedDimension 

Implements AbstractDataReader.

Definition at line 258 of file ColumnDataReader.cpp.

References EXCEPTION, FILE_SUFFIX_WIDTH, mDataFilename, mHasUnlimitedDimension, mNumFixedDimensions, mValues, mVariablesToColumns, and ReadValueFromFile().

std::vector< double > ColumnDataReader::GetValues ( const std::string &  rVariableName  )  [virtual]

Get the entries for a given variable.

Parameters:
rVariableName 

Implements AbstractDataReader.

Definition at line 237 of file ColumnDataReader.cpp.

References EXCEPTION, mDataFilename, mNumFixedDimensions, mValues, mVariablesToColumns, and ReadColumnFromFile().

bool ColumnDataReader::HasValues ( const std::string &  rVariableName  ) 

Determine whether the data file has entries for a given variable.

Parameters:
rVariableName 

Definition at line 396 of file ColumnDataReader.cpp.

References mVariablesToColumns.

void ColumnDataReader::PushColumnEntryFromLine ( const std::string &  rLine,
int  col 
) [private]

Push back an entry from the data file into mValues.

Parameters:
rLine the line of the data file
col the column number

Definition at line 381 of file ColumnDataReader.cpp.

References mFieldWidth, mValues, and SPACING.

Referenced by ReadColumnFromFile(), and ReadValueFromFile().

void ColumnDataReader::ReadColumnFromFile ( const std::string &  rFilename,
int  col 
) [private]

Read in a given column from a data file into mValues.

Parameters:
rFilename the file name
col the column number

Definition at line 355 of file ColumnDataReader.cpp.

References mValues, and PushColumnEntryFromLine().

Referenced by GetUnlimitedDimensionValues(), and GetValues().

void ColumnDataReader::ReadValueFromFile ( const std::string &  rFilename,
int  col,
int  row 
) [private]

Push back an entry from a file into mValues.

Parameters:
rFilename the file name
col the column number
row the row number

Definition at line 335 of file ColumnDataReader.cpp.

References EXCEPTION, and PushColumnEntryFromLine().

Referenced by GetValues().

Member Data Documentation

std::string ColumnDataReader::mAncillaryFilename [private]

The name of the ancillary file.

Definition at line 54 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), and GetUnlimitedDimensionValues().

std::string ColumnDataReader::mDataFilename [private]

The name of the data file.

Definition at line 53 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), GetUnlimitedDimensionValues(), and GetValues().

unsigned ColumnDataReader::mFieldWidth [private]

Width of each column in the text file (excludes column headers). Determined from the first data entry

Definition at line 56 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), GetFieldWidth(), and PushColumnEntryFromLine().

bool ColumnDataReader::mHasUnlimitedDimension [private]

Whether the data file has an unlimited dimension.

Definition at line 50 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), GetUnlimitedDimensionValues(), and GetValues().

std::string ColumnDataReader::mInfoFilename [private]

The name of the info file.

Definition at line 52 of file ColumnDataReader.hpp.

Referenced by CheckFiles().

int ColumnDataReader::mNumFixedDimensions [private]

The number of fixed dimensions in data file.

Definition at line 49 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), GetUnlimitedDimensionValues(), and GetValues().

int ColumnDataReader::mNumVariables [private]

The number of variables in the data file.

Definition at line 51 of file ColumnDataReader.hpp.

Referenced by CheckFiles().

std::vector<double> ColumnDataReader::mValues [private]

Vector to hold values for a variable.

Definition at line 55 of file ColumnDataReader.hpp.

Referenced by GetUnlimitedDimensionValues(), GetValues(), PushColumnEntryFromLine(), and ReadColumnFromFile().

std::map<std::string, int> ColumnDataReader::mVariablesToColumns [private]

Map between variable names and data column numbers.

Todo:
Change int to unsigned? (#991)

Definition at line 47 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), GetValues(), and HasValues().

std::map<std::string, std::string> ColumnDataReader::mVariablesToUnits [private]

Map between variable names and variable units.

Definition at line 48 of file ColumnDataReader.hpp.

Referenced by CheckFiles().

const int ColumnDataReader::SPACING = 2 [static, private]

Space between columns (includes minus sign)

Definition at line 57 of file ColumnDataReader.hpp.

Referenced by CheckFiles(), and PushColumnEntryFromLine().

The documentation for this class was generated from the following files:
Generated on Thu Dec 22 13:03:31 2011 for Chaste by  doxygen 1.6.3