SiPixelGainCalibrationOffline Class Reference

#include <CondFormats/SiPixelObjects/src/SiPixelGainCalibrationOffline.cc>

Classes
struct	DecodingStructure
struct	DetRegistry
class	StrictWeakOrdering

Public Types
typedef std::vector< char >::const_iterator	ContainerIterator
typedef std::pair< ContainerIterator, ContainerIterator >	Range
typedef std::vector< DetRegistry >	Registry
typedef Registry::const_iterator	RegistryIterator

Public Member Functions
void	getDetIds (std::vector< uint32_t > &DetIds_) const
float	getGain (const int &col, const int &row, const Range &range, const int &nCols, bool &isDeadColumn, bool &isNoisyColumn) const
double	getGainHigh () const
double	getGainLow () const
const int	getNCols (const uint32_t &detID) const
unsigned int	getNumberOfRowsToAverageOver () const
float	getPed (const int &col, const int &row, const Range &range, const int &nCols, bool &isDead, bool &isNoisy) const
double	getPedHigh () const
double	getPedLow () const
const Range	getRange (const uint32_t &detID) const
const std::pair< const Range, const int >	getRangeAndNCols (const uint32_t &detID) const
void	initialize ()
bool	put (const uint32_t &detID, Range input, const int &nCols)
void	setDataGain (float gain, const int &nRows, std::vector< char > &vped, bool thisColumnIsDead=false, bool thisColumnIsNoisy=false)
void	setDataPedestal (float pedestal, std::vector< char > &vped, bool thisPixelIsDead=false, bool thisPixelIsNoisy=false)
void	setDeadColumn (const int &nRows, std::vector< char > &vped)
void	setDeadPixel (std::vector< char > &vped)
void	setNoisyColumn (const int &nRows, std::vector< char > &vped)
void	setNoisyPixel (std::vector< char > &vped)
	SiPixelGainCalibrationOffline ()
	SiPixelGainCalibrationOffline (float minPed, float maxPed, float minGain, float maxGain)
	~SiPixelGainCalibrationOffline ()

Private Member Functions
float	decodeGain (unsigned int gain) const
float	decodePed (unsigned int ped) const
float	encodeGain (const float &gain)
float	encodePed (const float &ped)
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
unsigned int	deadFlag_
std::vector< DetRegistry >	indexes
float	maxGain_
float	maxPed_
float	minGain_
float	minPed_
unsigned int	nBinsToUseForEncoding_
unsigned int	noisyFlag_
unsigned int	numberOfRowsToAverageOver_
std::vector< char >	v_pedestals

Friends
class	boost::serialization::access
template<typename CondSerializationT , typename Enabled >
struct	cond::serialization::access

Detailed Description

Description: Gain calibration object for the Silicon Pixel detector. Stores pedestal at pixel granularity, gain at column granularity.

Implementation: <Notes on="" implementation>="">

Definition at line 29 of file SiPixelGainCalibrationOffline.h.

Member Typedef Documentation

typedef std::vector<char>::const_iterator SiPixelGainCalibrationOffline::ContainerIterator

Definition at line 51 of file SiPixelGainCalibrationOffline.h.

typedef std::pair<ContainerIterator, ContainerIterator> SiPixelGainCalibrationOffline::Range

Definition at line 52 of file SiPixelGainCalibrationOffline.h.

typedef std::vector<DetRegistry> SiPixelGainCalibrationOffline::Registry

Definition at line 53 of file SiPixelGainCalibrationOffline.h.

typedef Registry::const_iterator SiPixelGainCalibrationOffline::RegistryIterator

Definition at line 54 of file SiPixelGainCalibrationOffline.h.

Constructor & Destructor Documentation

SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline

(

)

Definition at line 9 of file SiPixelGainCalibrationOffline.cc.

References deadFlag_, Exception, and noisyFlag_.

                                                             :
  minPed_(0.),
  maxPed_(255.),
  minGain_(0.),
  maxGain_(255.),
  numberOfRowsToAverageOver_(80),
  nBinsToUseForEncoding_(253),
  deadFlag_(255),
  noisyFlag_(254)
{
   if (deadFlag_ > 0xFF)
      throw cms::Exception("GainCalibration Payload configuration error")
         << "[SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline] Dead flag was set to " << deadFlag_ << ", and it must be set less than or equal to 255";
   if (noisyFlag_ > 0xFF)
      throw cms::Exception("GainCalibration Payload configuration error")
         << "[SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline] Noisy flag was set to " << noisyFlag_ << ", and it must be set less than or equal to 255";
}

SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline	(	float	minPed,
		float	maxPed,
		float	minGain,
		float	maxGain
	)

Definition at line 27 of file SiPixelGainCalibrationOffline.cc.

References deadFlag_, Exception, and noisyFlag_.

                                                                                                                     :
  minPed_(minPed),
  maxPed_(maxPed),
  minGain_(minGain),
  maxGain_(maxGain),
  numberOfRowsToAverageOver_(80),
  nBinsToUseForEncoding_(253),
  deadFlag_(255),
  noisyFlag_(254)
{
   if (deadFlag_ > 0xFF)
      throw cms::Exception("GainCalibration Payload configuration error")
         << "[SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline] Dead flag was set to " << deadFlag_ << ", and it must be set less than or equal to 255";
   if (noisyFlag_ > 0xFF)
      throw cms::Exception("GainCalibration Payload configuration error")
         << "[SiPixelGainCalibrationOffline::SiPixelGainCalibrationOffline] Noisy flag was set to " << noisyFlag_ << ", and it must be set less than or equal to 255";
}

SiPixelGainCalibrationOffline::~SiPixelGainCalibrationOffline ( )

inline

Definition at line 59 of file SiPixelGainCalibrationOffline.h.

{}

Member Function Documentation

float SiPixelGainCalibrationOffline::decodeGain ( unsigned int  gain ) const

private

Definition at line 230 of file SiPixelGainCalibrationOffline.cc.

References objects.autophobj::float, maxGain_, minGain_, and nBinsToUseForEncoding_.

Referenced by getGain(), and setNoisyColumn().

                                                                         {

  double precision = (maxGain_-minGain_)/static_cast<float>(nBinsToUseForEncoding_);
  float decodedGain = (float)(gain*precision + minGain_);
  return decodedGain;
}

float SiPixelGainCalibrationOffline::decodePed ( unsigned int  ped ) const

private

Definition at line 222 of file SiPixelGainCalibrationOffline.cc.

References objects.autophobj::float, maxPed_, minPed_, and nBinsToUseForEncoding_.

Referenced by getPed(), and setNoisyColumn().

                                                                       {

  double precision = (maxPed_-minPed_)/static_cast<float>(nBinsToUseForEncoding_);
  float decodedPed = (float)(ped*precision + minPed_);
  return decodedPed;

}

float SiPixelGainCalibrationOffline::encodeGain ( const float &  gain )

private

Definition at line 196 of file SiPixelGainCalibrationOffline.cc.

References Exception, objects.autophobj::float, maxGain_, minGain_, and nBinsToUseForEncoding_.

Referenced by setDataGain(), and setNoisyColumn().

                                                                   {
  
  if(gain < minGain_ || gain > maxGain_ ) {
    throw cms::Exception("InsertFailure")
      << "[SiPixelGainCalibrationOffline::encodeGain] Trying to encode gain (" << gain << ") out of range [" << minGain_ << "," << maxGain_ << "]\n";
  } else {
    double precision   = (maxGain_-minGain_)/static_cast<float>(nBinsToUseForEncoding_);
    float  encodedGain = (float)((gain-minGain_)/precision);
    return encodedGain;
  }

}

float SiPixelGainCalibrationOffline::encodePed ( const float &  ped )

private

Definition at line 209 of file SiPixelGainCalibrationOffline.cc.

References Exception, objects.autophobj::float, maxPed_, minPed_, and nBinsToUseForEncoding_.

Referenced by setDataPedestal(), and setNoisyColumn().

                                                                 {

  if(ped < minPed_ || ped > maxPed_ ) {
    throw cms::Exception("InsertFailure")
      << "[SiPixelGainCalibrationOffline::encodePed] Trying to encode pedestal (" << ped << ") out of range [" << minPed_ << "," << maxPed_ << "]\n";
  } else {
    double precision   = (maxPed_-minPed_)/static_cast<float>(nBinsToUseForEncoding_);
    float  encodedPed = (float)((ped-minPed_)/precision);
    return encodedPed;
  }

}

void SiPixelGainCalibrationOffline::getDetIds

(

std::vector< uint32_t > &

DetIds_

)

const

Definition at line 93 of file SiPixelGainCalibrationOffline.cc.

References begin, end, indexes, and AlCaHLTBitMon_ParallelJobs::p.

Referenced by initialize().

                                                                                {
  // returns vector of DetIds in map
  SiPixelGainCalibrationOffline::RegistryIterator begin = indexes.begin();
  SiPixelGainCalibrationOffline::RegistryIterator end   = indexes.end();
  for (SiPixelGainCalibrationOffline::RegistryIterator p=begin; p != end; ++p) {
    DetIds_.push_back(p->detid);
  }
}

float SiPixelGainCalibrationOffline::getGain	(	const int &	col,
		const int &	row,
		const Range &	range,
		const int &	nCols,
		bool &	isDeadColumn,
		bool &	isNoisyColumn
	)		const

Definition at line 173 of file SiPixelGainCalibrationOffline.cc.

References cuy::col, SiPixelGainCalibrationOffline::DecodingStructure::datum, deadFlag_, decodeGain(), Exception, noisyFlag_, numberOfRowsToAverageOver_, and alignCSCRings::s.

Referenced by setNoisyColumn().

                                                                                                                                                                {

  unsigned int lengthOfColumnData = (range.second-range.first)/nCols;
  //determine what row averaged range we are in (i.e. ROC 1 or ROC 2)
  unsigned int lengthOfAveragedDataInEachColumn = numberOfRowsToAverageOver_ + 1;
  unsigned int numberOfAveragedDataBlocksToSkip = row / numberOfRowsToAverageOver_;

  // gain average is stored in the last location of current row averaged column data block
  const DecodingStructure & s = (const DecodingStructure & ) *(range.first+(col)*(lengthOfColumnData) + ( (numberOfAveragedDataBlocksToSkip+1) * lengthOfAveragedDataInEachColumn) - 1);

  if ((s.datum & 0xFF) == deadFlag_)
     isDeadColumn = true;
  if ((s.datum & 0xFF) == noisyFlag_)
     isNoisyColumn = true;

  int maxRow = lengthOfColumnData - (lengthOfColumnData % numberOfRowsToAverageOver_) - 1;
  if (col >= nCols || row > maxRow){
    throw cms::Exception("CorruptedData")
      << "[SiPixelGainCalibrationOffline::getPed] Pixel out of range: col " << col;
  }  
  return decodeGain(s.datum & 0xFF);
}

double SiPixelGainCalibrationOffline::getGainHigh ( ) const

inline

Definition at line 76 of file SiPixelGainCalibrationOffline.h.

References maxGain_.

{ return maxGain_; }

double SiPixelGainCalibrationOffline::getGainLow ( ) const

inline

Definition at line 75 of file SiPixelGainCalibrationOffline.h.

References minGain_.

{ return minGain_; }

const int SiPixelGainCalibrationOffline::getNCols

(

const uint32_t &

detID

)

const

Definition at line 64 of file SiPixelGainCalibrationOffline.cc.

References indexes, and AlCaHLTBitMon_ParallelJobs::p.

Referenced by initialize().

                                                                             {
  // get number of columns of DetId
  RegistryIterator p = std::lower_bound(indexes.begin(),indexes.end(),DetId,SiPixelGainCalibrationOffline::StrictWeakOrdering());
  if (p==indexes.end()|| p->detid!=DetId) 
    return 0;
  else
    return p->ncols; 
}

unsigned int SiPixelGainCalibrationOffline::getNumberOfRowsToAverageOver ( ) const

inline

Definition at line 74 of file SiPixelGainCalibrationOffline.h.

References numberOfRowsToAverageOver_.

{ return numberOfRowsToAverageOver_; }

float SiPixelGainCalibrationOffline::getPed	(	const int &	col,
		const int &	row,
		const Range &	range,
		const int &	nCols,
		bool &	isDead,
		bool &	isNoisy
	)		const

Definition at line 149 of file SiPixelGainCalibrationOffline.cc.

References SiPixelGainCalibrationOffline::DecodingStructure::datum, deadFlag_, decodePed(), Exception, noisyFlag_, numberOfRowsToAverageOver_, and alignCSCRings::s.

Referenced by setNoisyColumn().

                                                                                                                                                   {

  unsigned int lengthOfColumnData = (range.second-range.first)/nCols;
  //determine what row averaged range we are in (i.e. ROC 1 or ROC 2)
  unsigned int lengthOfAveragedDataInEachColumn = numberOfRowsToAverageOver_ + 1;
  unsigned int numberOfAveragedDataBlocksToSkip = row / numberOfRowsToAverageOver_;
  unsigned int offSetInCorrectDataBlock         = row % numberOfRowsToAverageOver_;

  const DecodingStructure & s = (const DecodingStructure & ) *(range.first + col*(lengthOfColumnData) + (numberOfAveragedDataBlocksToSkip * lengthOfAveragedDataInEachColumn) + offSetInCorrectDataBlock);

  int maxRow = lengthOfColumnData - (lengthOfColumnData % numberOfRowsToAverageOver_) - 1;
  if (col >= nCols || row > maxRow){
    throw cms::Exception("CorruptedData")
      << "[SiPixelGainCalibrationOffline::getPed] Pixel out of range: col " << col << " row " << row;
  }  

  if ((s.datum & 0xFF) == deadFlag_)
     isDead = true;
  if ((s.datum & 0xFF) == noisyFlag_)
     isNoisy = true;

  return decodePed(s.datum & 0xFF);  
}

double SiPixelGainCalibrationOffline::getPedHigh ( ) const

inline

Definition at line 78 of file SiPixelGainCalibrationOffline.h.

References maxPed_.

{ return maxPed_; }

double SiPixelGainCalibrationOffline::getPedLow ( ) const

inline

Definition at line 77 of file SiPixelGainCalibrationOffline.h.

References minPed_.

{ return minPed_; }

const SiPixelGainCalibrationOffline::Range SiPixelGainCalibrationOffline::getRange

(

const uint32_t &

detID

)

const

Definition at line 73 of file SiPixelGainCalibrationOffline.cc.

References indexes, AlCaHLTBitMon_ParallelJobs::p, and v_pedestals.

Referenced by initialize().

                                                                                                            {
  // get SiPixelGainCalibrationOffline Range of DetId
  
  RegistryIterator p = std::lower_bound(indexes.begin(),indexes.end(),DetId,SiPixelGainCalibrationOffline::StrictWeakOrdering());
  if (p==indexes.end()|| p->detid!=DetId) 
    return SiPixelGainCalibrationOffline::Range(v_pedestals.end(),v_pedestals.end()); 
  else 
    return SiPixelGainCalibrationOffline::Range(v_pedestals.begin()+p->ibegin,v_pedestals.begin()+p->iend);
}

const std::pair< const SiPixelGainCalibrationOffline::Range, const int > SiPixelGainCalibrationOffline::getRangeAndNCols

(

const uint32_t &

detID

)

const

Definition at line 84 of file SiPixelGainCalibrationOffline.cc.

References indexes, AlCaHLTBitMon_ParallelJobs::p, and v_pedestals.

Referenced by initialize().

                                                                           {
  RegistryIterator p = std::lower_bound(indexes.begin(),indexes.end(),DetId,SiPixelGainCalibrationOffline::StrictWeakOrdering());
  if (p==indexes.end()|| p->detid!=DetId) 
    return std::make_pair(SiPixelGainCalibrationOffline::Range(v_pedestals.end(),v_pedestals.end()), 0); 
  else 
    return std::make_pair(SiPixelGainCalibrationOffline::Range(v_pedestals.begin()+p->ibegin,v_pedestals.begin()+p->iend), p->ncols);
}

void SiPixelGainCalibrationOffline::initialize ( )

inline

Definition at line 61 of file SiPixelGainCalibrationOffline.h.

References muonCSCDigis_cfi::gain, getDetIds(), getNCols(), getRange(), getRangeAndNCols(), input, muonCSCDigis_cfi::pedestal, put(), setDataGain(), and setDataPedestal().

{}

bool SiPixelGainCalibrationOffline::put	(	const uint32_t &	detID,
		Range	input,
		const int &	nCols
	)

Definition at line 45 of file SiPixelGainCalibrationOffline.cc.

References SiPixelGainCalibrationOffline::DetRegistry::detid, SiPixelGainCalibrationOffline::DetRegistry::ibegin, SiPixelGainCalibrationOffline::DetRegistry::iend, indexes, SiPixelGainCalibrationOffline::DetRegistry::ncols, AlCaHLTBitMon_ParallelJobs::p, sd, and v_pedestals.

Referenced by initialize(), and SiPixelFakeGainOfflineESSource::produce().

                                                                                            {
  // put in SiPixelGainCalibrationOffline of DetId

  Registry::iterator p = std::lower_bound(indexes.begin(),indexes.end(),DetId,SiPixelGainCalibrationOffline::StrictWeakOrdering());
  if (p!=indexes.end() && p->detid==DetId)
    return false;
  
  size_t sd= input.second-input.first;
  DetRegistry detregistry;
  detregistry.detid=DetId;
  detregistry.ncols=nCols;
  detregistry.ibegin=v_pedestals.size();
  detregistry.iend=v_pedestals.size()+sd;
  indexes.insert(p,detregistry);

  v_pedestals.insert(v_pedestals.end(),input.first,input.second);
  return true;
}

template<class Archive >

void SiPixelGainCalibrationOffline::serialize ( Archive &  ar, const unsigned int  version  )

private

void SiPixelGainCalibrationOffline::setDataGain	(	float	gain,
		const int &	nRows,
		std::vector< char > &	vped,
		bool	thisColumnIsDead = false,
		bool	thisColumnIsNoisy = false
	)

Definition at line 102 of file SiPixelGainCalibrationOffline.cc.

References deadFlag_, encodeGain(), Exception, sistrip::extrainfo::gain_, noisyFlag_, and numberOfRowsToAverageOver_.

Referenced by initialize(), SiPixelFakeGainOfflineESSource::produce(), setDeadColumn(), and setNoisyColumn().

                                                                                                                                                 {
  
  float theEncodedGain=0;
  if(!thisColumnIsDead && !thisColumnIsNoisy)
    theEncodedGain = encodeGain(gain);

  unsigned int gain_  = (static_cast<unsigned int>(theEncodedGain)) & 0xFF;

  // if this whole column is dead, set a char based dead flag in the blob.
  if (thisColumnIsDead)
     gain_ = deadFlag_ & 0xFF;
  if (thisColumnIsNoisy)
     gain_ = noisyFlag_ & 0xFF;

  vped.resize(vped.size()+1);
  //check to make sure the column is being placed in the right place in the blob
  if (nRows != (int)numberOfRowsToAverageOver_)
  {
    throw cms::Exception("GainCalibration Payload configuration error")
      << "[SiPixelGainCalibrationOffline::setDataGain] You are setting a gain averaged over nRows = " << nRows << " where this payload is set ONLY to average over " << numberOfRowsToAverageOver_ << " nRows";
  }

  if (vped.size() % (nRows + 1) != 0) 
  {
    throw cms::Exception("FillError")
      << "[SiPixelGainCalibrationOffline::setDataGain] Column gain average (OR SETTING AN ENTIRE COLUMN DEAD/NOISY) must be filled after the pedestal for each row has been added. An additional source of this error would be setting a pixel dead/noisy AND setting its pedestal";
  }  
  // insert in vector of char
  ::memcpy((void*)(&vped[vped.size()-1]),(void*)(&gain_),1);
}

void SiPixelGainCalibrationOffline::setDataPedestal	(	float	pedestal,
		std::vector< char > &	vped,
		bool	thisPixelIsDead = false,
		bool	thisPixelIsNoisy = false
	)

Definition at line 133 of file SiPixelGainCalibrationOffline.cc.

References deadFlag_, encodePed(), and noisyFlag_.

Referenced by initialize(), SiPixelFakeGainOfflineESSource::produce(), setDeadPixel(), and setNoisyPixel().

                                                                                                                                      {

  float theEncodedPedestal  = encodePed(pedestal);

  unsigned int ped_  = (static_cast<unsigned int>(theEncodedPedestal)) & 0xFF;

  if (thisPixelIsDead)
     ped_ = deadFlag_ & 0xFF;
  if (thisPixelIsNoisy)
     ped_ = noisyFlag_ & 0xFF;

  vped.resize(vped.size()+1);
  // insert in vector of char
  ::memcpy((void*)(&vped[vped.size()-1]),(void*)(&ped_),1);
}

void SiPixelGainCalibrationOffline::setDeadColumn ( const int &  nRows, std::vector< char > &  vped  )

inline

Definition at line 82 of file SiPixelGainCalibrationOffline.h.

References setDataGain().

{ setDataGain(0 /*dummy value, not used*/, nRows, vped,  true ); }

void SiPixelGainCalibrationOffline::setDeadPixel ( std::vector< char > &  vped )

inline

Definition at line 81 of file SiPixelGainCalibrationOffline.h.

References setDataPedestal().

{ setDataPedestal(0 /*dummy value, not used*/,    vped,  true ); }

void SiPixelGainCalibrationOffline::setNoisyColumn ( const int &  nRows, std::vector< char > &  vped  )

inline

Definition at line 86 of file SiPixelGainCalibrationOffline.h.

References cuy::col, decodeGain(), decodePed(), encodeGain(), encodePed(), getGain(), getPed(), and setDataGain().

{ setDataGain(0 /*dummy value, not used*/, nRows, vped,  false, true ); }

void SiPixelGainCalibrationOffline::setNoisyPixel ( std::vector< char > &  vped )

inline

Definition at line 85 of file SiPixelGainCalibrationOffline.h.

References setDataPedestal().

{ setDataPedestal(0 /*dummy value, not used*/,    vped,  false, true ); }

Friends And Related Function Documentation

friend class boost::serialization::access

friend

Definition at line 110 of file SiPixelGainCalibrationOffline.h.

template<typename CondSerializationT , typename Enabled >

friend struct cond::serialization::access

friend

Definition at line 110 of file SiPixelGainCalibrationOffline.h.

Member Data Documentation

unsigned int SiPixelGainCalibrationOffline::deadFlag_

private

Definition at line 106 of file SiPixelGainCalibrationOffline.h.

Referenced by getGain(), getPed(), setDataGain(), setDataPedestal(), and SiPixelGainCalibrationOffline().

std::vector<DetRegistry> SiPixelGainCalibrationOffline::indexes

private

Definition at line 101 of file SiPixelGainCalibrationOffline.h.

Referenced by getDetIds(), getNCols(), getRange(), getRangeAndNCols(), and put().

float SiPixelGainCalibrationOffline::maxGain_

private

Definition at line 102 of file SiPixelGainCalibrationOffline.h.

Referenced by decodeGain(), encodeGain(), and getGainHigh().

float SiPixelGainCalibrationOffline::maxPed_

private

Definition at line 102 of file SiPixelGainCalibrationOffline.h.

Referenced by decodePed(), encodePed(), and getPedHigh().

float SiPixelGainCalibrationOffline::minGain_

private

Definition at line 102 of file SiPixelGainCalibrationOffline.h.

Referenced by decodeGain(), encodeGain(), and getGainLow().

float SiPixelGainCalibrationOffline::minPed_

private

Definition at line 102 of file SiPixelGainCalibrationOffline.h.

Referenced by decodePed(), encodePed(), and getPedLow().

unsigned int SiPixelGainCalibrationOffline::nBinsToUseForEncoding_

private

Definition at line 105 of file SiPixelGainCalibrationOffline.h.

Referenced by decodeGain(), decodePed(), encodeGain(), and encodePed().

unsigned int SiPixelGainCalibrationOffline::noisyFlag_

private

Definition at line 107 of file SiPixelGainCalibrationOffline.h.

Referenced by getGain(), getPed(), setDataGain(), setDataPedestal(), and SiPixelGainCalibrationOffline().

unsigned int SiPixelGainCalibrationOffline::numberOfRowsToAverageOver_

private

Definition at line 104 of file SiPixelGainCalibrationOffline.h.

Referenced by getGain(), getNumberOfRowsToAverageOver(), getPed(), and setDataGain().

std::vector<char> SiPixelGainCalibrationOffline::v_pedestals

private

Definition at line 100 of file SiPixelGainCalibrationOffline.h.

Referenced by getRange(), getRangeAndNCols(), and put().