source: trunk/src/param.cc @ 266

#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <string>
#include <stdlib.h>
#include <math.h>
#include <wcs.h>
#include <wcsunits.h>
#include <param.hh>
#include <config.h>
#include <duchamp.hh>
#include <ATrous/filter.hh>
#include <Utils/utils.hh>
#include <Utils/Section.hh>

// Define funtion to print bools as words, in case the compiler doesn't 
//  recognise the setf(ios::boolalpha) command...
#ifdef HAVE_STDBOOL_H
std::string stringize(bool b){
  std::stringstream ss;
  ss.setf(std::ios::boolalpha);
  ss << b;
  return ss.str();
}
#else
std::string stringize(bool b){
  std::string output;
  if(b) output="true";
  else output="false";
  return output;
}
#endif

/****************************************************************/
///////////////////////////////////////////////////
//// Functions for FitsHeader class:
///////////////////////////////////////////////////

FitsHeader::FitsHeader()
{
  this->wcs = (struct wcsprm *)calloc(1,sizeof(struct wcsprm));
  this->wcs->flag=-1;
  wcsini(true, 3, this->wcs); 
  this->wcsIsGood = false;
  this->nwcs = 0;
  this->scale=1.;
  this->offset=0.;
  this->power=1.;
  this->fluxUnits="counts";
}

FitsHeader::FitsHeader(const FitsHeader& h)
{
  this->wcs = (struct wcsprm *)calloc(1,sizeof(struct wcsprm));
  this->wcs->flag=-1;
  wcsini(true, h.wcs->naxis, this->wcs); 
  wcscopy(true, h.wcs, this->wcs); 
  wcsset(this->wcs);
  this->nwcs = h.nwcs;
  this->wcsIsGood = h.wcsIsGood;
  this->spectralUnits = h.spectralUnits;
  this->fluxUnits = h.fluxUnits;
  this->intFluxUnits = h.intFluxUnits;
  this->beamSize = h.beamSize;
  this->bmajKeyword = h.bmajKeyword;
  this->bminKeyword = h.bminKeyword;
  this->blankKeyword = h.blankKeyword;
  this->bzeroKeyword = h.bzeroKeyword;
  this->bscaleKeyword = h.bscaleKeyword;
  this->scale = h.scale;
  this->offset = h.offset;
  this->power = h.power;
}

FitsHeader& FitsHeader::operator= (const FitsHeader& h)
{
  this->wcs = (struct wcsprm *)calloc(1,sizeof(struct wcsprm));
  this->wcs->flag=-1;
  wcsini(true, h.wcs->naxis, this->wcs); 
  wcscopy(true, h.wcs, this->wcs); 
  wcsset(this->wcs);
  this->nwcs = h.nwcs;
  this->wcsIsGood = h.wcsIsGood;
  this->spectralUnits = h.spectralUnits;
  this->fluxUnits = h.fluxUnits;
  this->intFluxUnits = h.intFluxUnits;
  this->beamSize = h.beamSize;
  this->bmajKeyword = h.bmajKeyword;
  this->bminKeyword = h.bminKeyword;
  this->blankKeyword = h.blankKeyword;
  this->bzeroKeyword = h.bzeroKeyword;
  this->bscaleKeyword = h.bscaleKeyword;
  this->scale = h.scale;
  this->offset = h.offset;
  this->power = h.power;
}

void FitsHeader::setWCS(struct wcsprm *w)
{
  /** 
   *  A function that assigns the wcs parameters, and runs
   *   wcsset to set it up correctly.
   *  Performs a check to see if the WCS is good (by looking at 
   *   the lng and lat wcsprm parameters), and sets the wcsIsGood 
   *   flag accordingly.
   * \param w A WCSLIB wcsprm struct with the correct parameters.
   */
  wcscopy(true, w, this->wcs);
  wcsset(this->wcs);
  if( (w->lng!=-1) && (w->lat!=-1) ) this->wcsIsGood = true;
}

struct wcsprm *FitsHeader::getWCS()
{
  /** 
   *  A function that returns a properly initilized wcsprm object
   *  corresponding to the WCS.
   */
  struct wcsprm *wNew = (struct wcsprm *)calloc(1,sizeof(struct wcsprm));
  wNew->flag=-1;
  wcsini(true, this->wcs->naxis, wNew); 
  wcscopy(true, this->wcs, wNew); 
  wcsset(wNew);
  return wNew;
}

int FitsHeader::wcsToPix(const double *world, double *pix){      
  return wcsToPixSingle(this->wcs, world, pix);  
};
int FitsHeader::wcsToPix(const double *world, double *pix, const int npts){ 
  return wcsToPixMulti(this->wcs, world, pix, npts);  
};
int FitsHeader::pixToWCS(const double *pix, double *world){    
  return pixToWCSSingle(this->wcs, pix, world);  
};
int FitsHeader::pixToWCS(const double *pix, double *world, const int npts){
  return pixToWCSMulti(this->wcs, pix,world, npts);  
};


double FitsHeader::pixToVel(double &x, double &y, double &z)
{
  double vel;
  if(this->wcsIsGood){
    double *pix   = new double[3]; 
    double *world = new double[3];
    pix[0] = x; pix[1] = y; pix[2] = z;
    pixToWCSSingle(this->wcs,pix,world);
    vel = this->specToVel(world[2]);
    delete [] pix;
    delete [] world;
  }
  else vel = z;
  return vel;
}

double* FitsHeader::pixToVel(double &x, double &y, double *zarray, int size)
{
  double *newzarray = new double[size];
  if(this->wcsIsGood){
    double *pix   = new double[size*3];
    for(int i=0;i<size;i++){
      pix[3*i]   = x; 
      pix[3*i+1] = y; 
      pix[3*i+2] = zarray[i];
    }
    double *world = new double[size*3];
    pixToWCSMulti(this->wcs,pix,world,size);
    delete [] pix;
    for(int i=0;i<size;i++) newzarray[i] = this->specToVel(world[3*i+2]);
    delete [] world;
  }
  else{
    for(int i=0;i<size;i++) newzarray[i] = zarray[i];
  }
  return newzarray;
}

double  FitsHeader::specToVel(const double &coord)
{
  double vel;
  if(power==1.0) vel =  coord*this->scale + this->offset;
  else vel = pow( (coord*this->scale + this->offset), this->power);
  return vel;
}

double  FitsHeader::velToSpec(const float &velocity)
{
//   return velToCoord(this->wcs,velocity,this->spectralUnits);};
  return (pow(velocity, 1./this->power) - this->offset) / this->scale;}

std::string  FitsHeader::getIAUName(double ra, double dec)
{
  if(strcmp(this->wcs->lngtyp,"RA")==0) 
    return getIAUNameEQ(ra, dec, this->wcs->equinox);
  else 
    return getIAUNameGAL(ra, dec);
}

void FitsHeader::fixUnits(Param &par)
{
  // define spectral units from the param set
  this->spectralUnits = par.getSpectralUnits();

  double sc=1.;
  double of=0.;
  double po=1.;
  if(this->wcsIsGood){
    int status = wcsunits( this->wcs->cunit[this->wcs->spec], 
                           this->spectralUnits.c_str(), 
                           &sc, &of, &po);
    if(status > 0){
      std::stringstream errmsg;
      errmsg << "WCSUNITS Error, Code = " << status
             << ": " << wcsunits_errmsg[status];
      if(status == 10) errmsg << "\nTried to get conversion from \"" 
                              << this->wcs->cunit[this->wcs->spec] << "\" to \"" 
                              << this->spectralUnits.c_str() << "\".\n";
      this->spectralUnits = this->wcs->cunit[this->wcs->spec];
      if(this->spectralUnits==""){
        errmsg << "Spectral units not specified. "
               << "For data presentation, we will use dummy units of \"SPC\".\n"
               << "Please report this occurence -- it should not happen now!"
               << "In the meantime, you may want to set the CUNIT"
               << this->wcs->spec + 1 <<" keyword to make this work.\n";
        this->spectralUnits = "SPC";
      }
      duchampError("fixUnits", errmsg.str());
      
    }
  }
  this->scale = sc;
  this->offset= of;
  this->power = po;

  // Work out the integrated flux units, based on the spectral units.
  // If flux is per beam, trim the /beam from the flux units and multiply 
  //  by the spectral units.
  // Otherwise, just muliply by the spectral units.
  if(this->fluxUnits.size()>0){
    if(this->fluxUnits.substr(this->fluxUnits.size()-5,
                              this->fluxUnits.size()   ) == "/beam"){
      this->intFluxUnits = this->fluxUnits.substr(0,this->fluxUnits.size()-5)
        +" " +this->spectralUnits;
    }
    else this->intFluxUnits = this->fluxUnits + " " + this->spectralUnits;
  }

}

/****************************************************************/
///////////////////////////////////////////////////
//// Accessor Functions for Parameter class:
///////////////////////////////////////////////////
Param::Param(){
  /** 
   * Param()
   *  Default intial values for the parameters.
   * imageFile has no default value!
   */
  std::string baseSection = "[*,*,*]";
  // Input files
  this->imageFile         = "";
  this->flagSubsection    = false;
  this->pixelSec.setSection(baseSection);
  this->flagReconExists   = false;
  this->reconFile         = "";
  this->flagSmoothExists  = false;
  this->smoothFile        = "";
  // Output files
  this->flagLog           = true;
  this->logFile           = "duchamp-Logfile.txt";
  this->outFile           = "duchamp-Results.txt";
  this->spectraFile       = "duchamp-Spectra.ps";
  this->flagOutputSmooth  = false;
  this->flagOutputRecon   = false;
  this->flagOutputResid   = false;
  this->flagVOT           = false;
  this->votFile           = "duchamp-Results.xml";
  this->flagKarma         = false;
  this->karmaFile         = "duchamp-Results.ann";
  this->flagMaps          = true;
  this->detectionMap      = "duchamp-DetectionMap.ps";
  this->momentMap         = "duchamp-MomentMap.ps";
  this->flagXOutput       = true;
  // Cube related parameters 
  this->flagBlankPix      = true;
  this->blankPixValue     = -8.00061;
  this->blankKeyword      = 1;
  this->bscaleKeyword     = -8.00061;
  this->bzeroKeyword      = 0.;
  this->flagUsingBlank    = false;
  this->flagMW            = false;
  this->maxMW             = 112;
  this->minMW             = 75;
  this->numPixBeam        = 10.;
  this->flagUsingBeam     = false;
  // Trim-related         
  this->flagTrimmed       = false;
  this->borderLeft        = 0;
  this->borderRight       = 0;
  this->borderBottom      = 0;
  this->borderTop         = 0;
  // Subsection offsets
  this->sizeOffsets       = 0;
  this->xSubOffset        = 0;
  this->ySubOffset        = 0;
  this->zSubOffset        = 0;
  // Baseline related
  this->flagBaseline      = false;
  // Detection-related    
  this->flagNegative      = false;
  // Object growth        
  this->flagGrowth        = false;
  this->growthCut         = 2.;
  // FDR analysis         
  this->flagFDR           = false;
  this->alphaFDR          = 0.01;
  // Other detection      
  this->flagStatSec       = false;
  this->statSec.setSection(baseSection);
  this->snrCut            = 3.;
  this->threshold         = 0.;
  this->flagUserThreshold = false;
  // Hanning Smoothing 
  this->flagSmooth        = false;
  this->hanningWidth      = 5;
  // A trous reconstruction parameters
  this->flagATrous        = true;
  this->reconDim          = 1;
  this->scaleMin          = 1;
  this->snrRecon          = 4.;
  this->filterCode        = 1;
  this->reconFilter.define(this->filterCode);
  // Volume-merging parameters
  this->flagAdjacent      = true;
  this->threshSpatial     = 3.;
  this->threshVelocity    = 7.;
  this->minChannels       = 3;
  this->minPix            = 2;
  // Input-Output related
  this->spectralMethod    = "peak";
  this->spectralUnits     = "km/s";
  this->pixelCentre       = "centroid";
  this->borders           = true;
  this->blankEdge         = true;
  this->verbose           = true;
};

Param::Param (const Param& p)
{
  this->imageFile         = p.imageFile;
  this->flagSubsection    = p.flagSubsection; 
  this->pixelSec          = p.pixelSec; 
  this->flagReconExists   = p.flagReconExists;
  this->reconFile         = p.reconFile;      
  this->flagSmoothExists  = p.flagSmoothExists;
  this->smoothFile        = p.smoothFile;      
  this->flagLog           = p.flagLog;        
  this->logFile           = p.logFile;       
  this->outFile           = p.outFile;        
  this->spectraFile       = p.spectraFile;    
  this->flagOutputSmooth  = p.flagOutputSmooth;
  this->flagOutputRecon   = p.flagOutputRecon;
  this->flagOutputResid   = p.flagOutputResid;
  this->flagVOT           = p.flagVOT;         
  this->votFile           = p.votFile;        
  this->flagKarma         = p.flagKarma;      
  this->karmaFile         = p.karmaFile;      
  this->flagMaps          = p.flagMaps;       
  this->detectionMap      = p.detectionMap;   
  this->momentMap         = p.momentMap;      
  this->flagXOutput       = p.flagXOutput;       
  this->flagBlankPix      = p.flagBlankPix;   
  this->blankPixValue     = p.blankPixValue;  
  this->blankKeyword      = p.blankKeyword;   
  this->bscaleKeyword     = p.bscaleKeyword;  
  this->bzeroKeyword      = p.bzeroKeyword;   
  this->flagUsingBlank    = p.flagUsingBlank; 
  this->flagMW            = p.flagMW;         
  this->maxMW             = p.maxMW;          
  this->minMW             = p.minMW;         
  this->numPixBeam        = p.numPixBeam;     
  this->flagTrimmed       = p.flagTrimmed;    
  this->borderLeft        = p.borderLeft;     
  this->borderRight       = p.borderRight;    
  this->borderBottom      = p.borderBottom;   
  this->borderTop         = p.borderTop;      
  this->sizeOffsets       = p.sizeOffsets;
  this->offsets           = new long[this->sizeOffsets];
  if(this->sizeOffsets>0)
    for(int i=0;i<this->sizeOffsets;i++) this->offsets[i] = p.offsets[i];
  this->xSubOffset        = p.xSubOffset;     
  this->ySubOffset        = p.ySubOffset;     
  this->zSubOffset        = p.zSubOffset;
  this->flagBaseline      = p.flagBaseline;
  this->flagNegative      = p.flagNegative;
  this->flagGrowth        = p.flagGrowth;
  this->growthCut         = p.growthCut;
  this->flagFDR           = p.flagFDR;
  this->alphaFDR          = p.alphaFDR;
  this->flagStatSec       = p.flagStatSec; 
  this->statSec           = p.statSec; 
  this->snrCut            = p.snrCut;
  this->threshold         = p.threshold;
  this->flagUserThreshold = p.flagUserThreshold;
  this->flagSmooth        = p.flagSmooth;
  this->hanningWidth      = p.hanningWidth;
  this->flagATrous        = p.flagATrous;
  this->reconDim          = p.reconDim;
  this->scaleMin          = p.scaleMin;
  this->snrRecon          = p.snrRecon;
  this->filterCode        = p.filterCode;
  this->reconFilter       = p.reconFilter;
  this->flagAdjacent      = p.flagAdjacent;
  this->threshSpatial     = p.threshSpatial;
  this->threshVelocity    = p.threshVelocity;
  this->minChannels       = p.minChannels;
  this->minPix            = p.minPix;
  this->spectralMethod    = p.spectralMethod;
  this->spectralUnits     = p.spectralUnits;
  this->pixelCentre       = p.pixelCentre;
  this->borders           = p.borders;
  this->verbose           = p.verbose;
}

Param& Param::operator= (const Param& p)
{
  this->imageFile         = p.imageFile;
  this->flagSubsection    = p.flagSubsection; 
  this->pixelSec          = p.pixelSec; 
  this->flagReconExists   = p.flagReconExists;
  this->reconFile         = p.reconFile;      
  this->flagSmoothExists  = p.flagSmoothExists;
  this->smoothFile        = p.smoothFile;      
  this->flagLog           = p.flagLog;        
  this->logFile           = p.logFile;       
  this->outFile           = p.outFile;        
  this->spectraFile       = p.spectraFile;    
  this->flagOutputSmooth  = p.flagOutputSmooth;
  this->flagOutputRecon   = p.flagOutputRecon;
  this->flagOutputResid   = p.flagOutputResid;
  this->flagVOT           = p.flagVOT;         
  this->votFile           = p.votFile;        
  this->flagKarma         = p.flagKarma;      
  this->karmaFile         = p.karmaFile;      
  this->flagMaps          = p.flagMaps;       
  this->detectionMap      = p.detectionMap;   
  this->momentMap         = p.momentMap;      
  this->flagXOutput       = p.flagXOutput;       
  this->flagBlankPix      = p.flagBlankPix;   
  this->blankPixValue     = p.blankPixValue;  
  this->blankKeyword      = p.blankKeyword;   
  this->bscaleKeyword     = p.bscaleKeyword;  
  this->bzeroKeyword      = p.bzeroKeyword;   
  this->flagUsingBlank    = p.flagUsingBlank; 
  this->flagMW            = p.flagMW;         
  this->maxMW             = p.maxMW;          
  this->minMW             = p.minMW;         
  this->numPixBeam        = p.numPixBeam;     
  this->flagTrimmed       = p.flagTrimmed;    
  this->borderLeft        = p.borderLeft;     
  this->borderRight       = p.borderRight;    
  this->borderBottom      = p.borderBottom;   
  this->borderTop         = p.borderTop;      
  this->sizeOffsets       = p.sizeOffsets;
  this->offsets           = new long[this->sizeOffsets];
  if(this->sizeOffsets>0)
    for(int i=0;i<this->sizeOffsets;i++) this->offsets[i] = p.offsets[i];
  this->xSubOffset        = p.xSubOffset;     
  this->ySubOffset        = p.ySubOffset;     
  this->zSubOffset        = p.zSubOffset;
  this->flagBaseline      = p.flagBaseline;
  this->flagNegative      = p.flagNegative;
  this->flagGrowth        = p.flagGrowth;
  this->growthCut         = p.growthCut;
  this->flagFDR           = p.flagFDR;
  this->alphaFDR          = p.alphaFDR;
  this->flagStatSec       = p.flagStatSec; 
  this->statSec           = p.statSec; 
  this->snrCut            = p.snrCut;
  this->threshold         = p.threshold;
  this->flagUserThreshold = p.flagUserThreshold;
  this->flagSmooth        = p.flagSmooth;
  this->hanningWidth      = p.hanningWidth;
  this->flagATrous        = p.flagATrous;
  this->reconDim          = p.reconDim;
  this->scaleMin          = p.scaleMin;
  this->snrRecon          = p.snrRecon;
  this->filterCode        = p.filterCode;
  this->reconFilter       = p.reconFilter;
  this->flagAdjacent      = p.flagAdjacent;
  this->threshSpatial     = p.threshSpatial;
  this->threshVelocity    = p.threshVelocity;
  this->minChannels       = p.minChannels;
  this->minPix            = p.minPix;
  this->spectralMethod    = p.spectralMethod;
  this->spectralUnits     = p.spectralUnits;
  this->pixelCentre       = p.pixelCentre;
  this->borders           = p.borders;
  this->verbose           = p.verbose;
}
//--------------------------------------------------------------------

int Param::getopts(int argc, char ** argv)
{
  /**  
   *   A function that reads in the command-line options, in a manner 
   *    tailored for use with the main Duchamp program.
   *
   *   \param argc The number of command line arguments.
   *   \param argv The array of command line arguments.
   */

  int returnValue;
  if(argc==1){
    std::cout << ERR_USAGE_MSG;
    returnValue = FAILURE;
  }
  else {
    std::string file;
    Param *newpars = new Param;
    *this = *newpars;
    delete newpars;
    char c;
    while( ( c = getopt(argc,argv,"p:f:hv") )!=-1){
      switch(c) {
      case 'p':
        file = optarg;
        if(this->readParams(file)==FAILURE){
          std::stringstream errmsg;
          errmsg << "Could not open parameter file " << file << ".\n";
          duchampError("Duchamp",errmsg.str());
          returnValue = FAILURE;
        }
        else returnValue = SUCCESS;
        break;
      case 'f':
        file = optarg;
        this->imageFile = file;
        returnValue = SUCCESS;
        break;
      case 'v':
        std::cout << PROGNAME << " version " << VERSION << std::endl;
        returnValue = FAILURE;
        break;
      case 'h':
      default :
        std::cout << ERR_USAGE_MSG;
        returnValue = FAILURE;
        break;
      }
    }
  }
  return returnValue;
}
//--------------------------------------------------------------------




/****************************************************************/
///////////////////////////////////////////////////
//// Other Functions using the  Parameter class:
///////////////////////////////////////////////////

inline std::string makelower( std::string s )
{
  // "borrowed" from Matt Howlett's 'fred'
  std::string out = "";
  for( int i=0; i<s.size(); ++i ) {
    out += tolower(s[i]);
  }
  return out;
}

inline bool boolify( std::string s )
{
  /**
   * bool boolify(string)
   *  Convert a std::string to a bool variable
   *  "1" and "true" get converted to true
   *  "0" and "false" (and anything else) get converted to false
   */
  if((s=="1") || (makelower(s)=="true")) return true;
  else if((s=="0") || (makelower(s)=="false")) return false;
  else return false;
}

inline std::string readSval(std::stringstream& ss)
{
  std::string val; ss >> val; return val;
}

inline bool readFlag(std::stringstream& ss)
{
  std::string val; ss >> val; return boolify(val);
}

inline float readFval(std::stringstream& ss)
{
  float val; ss >> val; return val;
}

inline int readIval(std::stringstream& ss)
{
  int val; ss >> val; return val;
}

int Param::readParams(std::string paramfile)
{
  /**
   * The parameters are read in from a disk file, on the assumption that each
   *  line of the file has the format "parameter value" (eg. alphafdr 0.1)
   * 
   * The case of the parameter name does not matter, nor does the
   * formatting of the spaces (it can be any amount of whitespace or
   * tabs). 
   *
   * \param paramfile A std::string containing the parameter filename.
   */
  std::ifstream fin(paramfile.c_str());
  if(!fin.is_open()) return FAILURE;
  std::string line;
  while( !std::getline(fin,line,'\n').eof()){

    if(line[0]!='#'){
      std::stringstream ss;
      ss.str(line);
      std::string arg;
      ss >> arg;
      arg = makelower(arg);
      if(arg=="imagefile")       this->imageFile = readSval(ss);
      if(arg=="flagsubsection")  this->flagSubsection = readFlag(ss); 
      if(arg=="subsection")      this->pixelSec.setSection(readSval(ss));
      if(arg=="flagreconexists") this->flagReconExists = readFlag(ss); 
      if(arg=="reconfile")       this->reconFile = readSval(ss); 
      if(arg=="flagsmoothexists")this->flagSmoothExists = readFlag(ss); 
      if(arg=="smoothfile")      this->smoothFile = readSval(ss); 

      if(arg=="flaglog")         this->flagLog = readFlag(ss); 
      if(arg=="logfile")         this->logFile = readSval(ss); 
      if(arg=="outfile")         this->outFile = readSval(ss); 
      if(arg=="spectrafile")     this->spectraFile = readSval(ss); 
      if(arg=="flagoutputsmooth")this->flagOutputSmooth = readFlag(ss); 
      if(arg=="flagoutputrecon") this->flagOutputRecon = readFlag(ss); 
      if(arg=="flagoutputresid") this->flagOutputResid = readFlag(ss); 
      if(arg=="flagvot")         this->flagVOT = readFlag(ss); 
      if(arg=="votfile")         this->votFile = readSval(ss); 
      if(arg=="flagkarma")       this->flagKarma = readFlag(ss); 
      if(arg=="karmafile")       this->karmaFile = readSval(ss); 
      if(arg=="flagmaps")        this->flagMaps = readFlag(ss); 
      if(arg=="detectionmap")    this->detectionMap = readSval(ss); 
      if(arg=="momentmap")       this->momentMap = readSval(ss); 
      if(arg=="flagxoutput")     this->flagXOutput = readFlag(ss); 

      if(arg=="flagnegative")    this->flagNegative = readFlag(ss);
      if(arg=="flagblankpix")    this->flagBlankPix = readFlag(ss); 
      if(arg=="blankpixvalue")   this->blankPixValue = readFval(ss); 
      if(arg=="flagmw")          this->flagMW = readFlag(ss); 
      if(arg=="maxmw")           this->maxMW = readIval(ss); 
      if(arg=="minmw")           this->minMW = readIval(ss); 
      if(arg=="beamsize")        this->numPixBeam = readFval(ss); 

      if(arg=="flagbaseline")    this->flagBaseline = readFlag(ss); 
      if(arg=="minpix")          this->minPix = readIval(ss); 
      if(arg=="flaggrowth")      this->flagGrowth = readFlag(ss); 
      if(arg=="growthcut")       this->growthCut = readFval(ss); 

      if(arg=="flagfdr")         this->flagFDR = readFlag(ss); 
      if(arg=="alphafdr")        this->alphaFDR = readFval(ss); 

      if(arg=="flagstatsec")     this->flagStatSec = readFlag(ss); 
      if(arg=="statsec")         this->statSec.setSection(readSval(ss));
      if(arg=="snrcut")          this->snrCut = readFval(ss); 
      if(arg=="threshold"){
                                 this->threshold = readFval(ss);
                                 this->flagUserThreshold = true;
      }
      
      if(arg=="flagsmooth")      this->flagSmooth = readFlag(ss);
      if(arg=="hanningwidth")    this->hanningWidth = readIval(ss);

      if(arg=="flagatrous")      this->flagATrous = readFlag(ss); 
      if(arg=="recondim")        this->reconDim = readIval(ss); 
      if(arg=="scalemin")        this->scaleMin = readIval(ss); 
      if(arg=="snrrecon")        this->snrRecon = readFval(ss); 
      if(arg=="filtercode"){
                                 this->filterCode = readIval(ss); 
                                 this->reconFilter.define(this->filterCode);
      }

      if(arg=="flagadjacent")    this->flagAdjacent = readFlag(ss); 
      if(arg=="threshspatial")   this->threshSpatial = readFval(ss); 
      if(arg=="threshvelocity")  this->threshVelocity = readFval(ss); 
      if(arg=="minchannels")     this->minChannels = readIval(ss); 

      if(arg=="spectralmethod")  this->spectralMethod = makelower(readSval(ss));
      if(arg=="spectralunits")   this->spectralUnits = makelower(readSval(ss));
      if(arg=="pixelcentre")     this->pixelCentre = makelower(readSval(ss));
      if(arg=="drawborders")     this->borders = readFlag(ss); 
      if(arg=="drawblankedges")  this->blankEdge = readFlag(ss); 
      if(arg=="verbose")         this->verbose = readFlag(ss); 
    }
  }
  if(this->flagATrous) this->flagSmooth = false;

  // Make sure spectralMethod is an acceptable type -- default is "peak"
  if((this->spectralMethod!="peak")&&(this->spectralMethod!="sum")){
    duchampWarning("readParams","Changing spectralMethod to \"peak\".\n");
    this->spectralMethod = "peak";
  }

  // Make sure pixelCentre is an acceptable type -- default is "peak"
  if((this->pixelCentre!="centroid")&&
     (this->pixelCentre!="average") &&
     (this->pixelCentre!="peak")       ){
    duchampWarning("readParams","Changing pixelCentre to \"centroid\".\n");
    this->pixelCentre = "centroid";
  }

  return SUCCESS;
}


std::ostream& operator<< ( std::ostream& theStream, Param& par)
{
  /**
   * Print out the parameter set in a formatted, easy to read style.
   * Lists the parameters, a description of them, and their value.
   */

  // Only show the [blankPixValue] bit if we are using the parameter
  // otherwise we have read it from the FITS header.
  std::string blankParam = "";
  if(par.getFlagUsingBlank()) blankParam = "[blankPixValue]";
  std::string beamParam = "";
  if(par.getFlagUsingBeam()) beamParam = "[beamSize]";

  // BUG -- can get error: `boolalpha' is not a member of type `ios' -- old compilers: gcc 2.95.3?
  //   theStream.setf(std::ios::boolalpha);
  theStream.setf(std::ios::left);
  theStream  <<"\n---- Parameters ----"<<std::endl;
  theStream  << std::setfill('.');
  const int widthText = 38;
  const int widthPar  = 18;
  if(par.getFlagSubsection())
    theStream<<std::setw(widthText)<<"Image to be analysed"                 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[imageFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<(par.getImageFile()+par.getSubsection()) <<std::endl;
  else 
    theStream<<std::setw(widthText)<<"Image to be analysed"                 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[imageFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getImageFile()      <<std::endl;
  if(par.getFlagReconExists() && par.getFlagATrous()){
    theStream<<std::setw(widthText)<<"Reconstructed array exists?"          
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[reconExists]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagReconExists())<<std::endl;
    theStream<<std::setw(widthText)<<"FITS file containing reconstruction"  
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[reconFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getReconFile()      <<std::endl;
  }
  if(par.getFlagSmoothExists() && par.getFlagSmooth()){
    theStream<<std::setw(widthText)<<"Hanning-smoothed array exists?"          
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[smoothExists]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagSmoothExists())<<std::endl;
    theStream<<std::setw(widthText)<<"FITS file containing smoothed array"  
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[smoothFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getSmoothFile()      <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Intermediate Logfile"
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[logFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getLogFile()        <<std::endl;
  theStream  <<std::setw(widthText)<<"Final Results file"                   
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[outFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getOutFile()        <<std::endl;
  theStream  <<std::setw(widthText)<<"Spectrum file"                        
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[spectraFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getSpectraFile()    <<std::endl;
  if(par.getFlagVOT()){
    theStream<<std::setw(widthText)<<"VOTable file"                         
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[votFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getVOTFile()        <<std::endl;
  }
  if(par.getFlagKarma()){
    theStream<<std::setw(widthText)<<"Karma annotation file"                
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[karmaFile]"
             <<"  =  " <<resetiosflags(std::ios::right)
             
             <<par.getKarmaFile()      <<std::endl;
  }
  if(par.getFlagMaps()){
    theStream<<std::setw(widthText)<<"0th Moment Map"                       
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[momentMap]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getMomentMap()      <<std::endl;
    theStream<<std::setw(widthText)<<"Detection Map"                        
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[detectionMap]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getDetectionMap()   <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Display a map in a pgplot xwindow?" 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagXOutput]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagXOutput())     <<std::endl;
  if(par.getFlagATrous()){                             
    theStream<<std::setw(widthText)<<"Saving reconstructed cube?"           
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagoutputrecon]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagOutputRecon())<<std::endl;
    theStream<<std::setw(widthText)<<"Saving residuals from reconstruction?"
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagoutputresid]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagOutputResid())<<std::endl;
  }                                                    
  if(par.getFlagSmooth()){                             
    theStream<<std::setw(widthText)<<"Saving Hanning-smoothed cube?"           
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagoutputsmooth]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagOutputSmooth())<<std::endl;
  }                                                    
  theStream  <<"------"<<std::endl;
  theStream  <<std::setw(widthText)<<"Searching for Negative features?"     
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagNegative]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagNegative())   <<std::endl;
  theStream  <<std::setw(widthText)<<"Fixing Blank Pixels?"                 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagBlankPix]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagBlankPix())   <<std::endl;
  if(par.getFlagBlankPix()){
    theStream<<std::setw(widthText)<<"Blank Pixel Value"                    
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<< blankParam
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getBlankPixVal()    <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Removing Milky Way channels?"         
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagMW]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagMW())         <<std::endl;
  if(par.getFlagMW()){
    theStream<<std::setw(widthText)<<"Milky Way Channels"                   
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[minMW - maxMW]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getMinMW()
             <<"-" <<par.getMaxMW()          <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Beam Size (pixels)"                   
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<< beamParam
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getBeamSize()       <<std::endl;
  theStream  <<std::setw(widthText)<<"Removing baselines before search?"    
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagBaseline]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagBaseline())   <<std::endl;
  theStream  <<std::setw(widthText)<<"Minimum # Pixels in a detection"      
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[minPix]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getMinPix()         <<std::endl;
  theStream  <<std::setw(widthText)<<"Minimum # Channels in a detection"    
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[minChannels]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getMinChannels()    <<std::endl;
  theStream  <<std::setw(widthText)<<"Growing objects after detection?"     
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagGrowth]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagGrowth())     <<std::endl;
  if(par.getFlagGrowth()) {                            
    theStream<<std::setw(widthText)<<"SNR Threshold for growth"             
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[growthCut]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getGrowthCut()      <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Hanning-smoothing each spectrum first?"        
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagSmooth]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagSmooth())     <<std::endl;
  if(par.getFlagSmooth())                              
    theStream<<std::setw(widthText)<<"Width of hanning filter"      
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[hanningWidth]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getHanningWidth()       <<std::endl;
  theStream  <<std::setw(widthText)<<"Using A Trous reconstruction?"        
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagATrous]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagATrous())     <<std::endl;
  if(par.getFlagATrous()){                             
    theStream<<std::setw(widthText)<<"Number of dimensions in reconstruction"      
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[reconDim]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getReconDim()       <<std::endl;
    theStream<<std::setw(widthText)<<"Minimum scale in reconstruction"      
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[scaleMin]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getMinScale()       <<std::endl;
    theStream<<std::setw(widthText)<<"SNR Threshold within reconstruction"  
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[snrRecon]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getAtrousCut()      <<std::endl;
    theStream<<std::setw(widthText)<<"Filter being used for reconstruction" 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[filterCode]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getFilterCode() 
             << " (" << par.getFilterName()  << ")" <<std::endl;
  }                                                    
  if(par.getFlagStatSec()){
    theStream<<std::setw(widthText)<<"Section used by statistics calculation"
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[statSec]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.statSec.getSection()          <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Using FDR analysis?"                  
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagFDR]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagFDR())        <<std::endl;
  if(par.getFlagFDR()){                                
    theStream<<std::setw(widthText)<<"Alpha value for FDR analysis"         
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[alphaFDR]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getAlpha()          <<std::endl;
  }                                                    
  else {
    if(par.getFlagUserThreshold()){
      theStream<<std::setw(widthText)<<"Detection Threshold"                        
               <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[threshold]"
               <<"  =  " <<resetiosflags(std::ios::right)
               <<par.getThreshold()            <<std::endl;
    }
    else{
      theStream<<std::setw(widthText)<<"SNR Threshold (in sigma)"
               <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[snrCut]"
               <<"  =  " <<resetiosflags(std::ios::right)
               <<par.getCut()            <<std::endl;
    }
  }
  theStream  <<std::setw(widthText)<<"Using Adjacent-pixel criterion?"      
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[flagAdjacent]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<stringize(par.getFlagAdjacent())   <<std::endl;
  if(!par.getFlagAdjacent()){
    theStream<<std::setw(widthText)<<"Max. spatial separation for merging"  
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[threshSpatial]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getThreshS()        <<std::endl;
  }
  theStream  <<std::setw(widthText)<<"Max. velocity separation for merging" 
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[threshVelocity]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getThreshV()        <<std::endl;
  theStream  <<std::setw(widthText)<<"Method of spectral plotting"          
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[spectralMethod]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getSpectralMethod() <<std::endl;
  theStream  <<std::setw(widthText)<<"Type of object centre used in results"
             <<std::setw(widthPar)<<setiosflags(std::ios::right)<<"[pixelCentre]"
             <<"  =  " <<resetiosflags(std::ios::right)
             <<par.getPixelCentre() <<std::endl;
  theStream  <<"--------------------\n\n";
  theStream  << std::setfill(' ');
  theStream.unsetf(std::ios::left);
  //  theStream.unsetf(std::ios::boolalpha);
}


void Param::copyHeaderInfo(FitsHeader &head)
{
  /**
   * A function to copy across relevant header keywords from the 
   *  FitsHeader class to the Param class, as they are needed by
   *  functions in the Param class.
   * The parameters are the keywords BLANK, BSCALE, BZERO, and the beam size. 
   */

  this->blankKeyword  = head.getBlankKeyword();
  this->bscaleKeyword = head.getBscaleKeyword();
  this->bzeroKeyword  = head.getBzeroKeyword();
  this->blankPixValue = this->blankKeyword * this->bscaleKeyword + 
    this->bzeroKeyword;

  this->numPixBeam    = head.getBeamSize();
}

std::string Param::outputSmoothFile()
{
  /** 
   * This function produces the required filename in which to save
   *  the Hanning-smoothed array. If the input image is image.fits, then
   *  the output will be eg. image.SMOOTH-3.fits, where the width of the 
   *  Hanning filter was 3 pixels.
   */
  std::string inputName = this->imageFile;
  std::stringstream ss;
  ss << inputName.substr(0,inputName.size()-5);  
                          // remove the ".fits" on the end.
  if(this->flagSubsection) ss<<".sub";
  ss << ".SMOOTH-" << this->hanningWidth
     << ".fits";
  return ss.str();
}

std::string Param::outputReconFile()
{
  /** 
   * This function produces the required filename in which to save
   *  the reconstructed array. If the input image is image.fits, then
   *  the output will be eg. image.RECON-3-2-4-1.fits, where the numbers are
   *  3=reconDim, 2=filterCode, 4=snrRecon, 1=minScale
   */
  std::string inputName = this->imageFile;
  std::stringstream ss;
  ss << inputName.substr(0,inputName.size()-5);  // remove the ".fits" on the end.
  if(this->flagSubsection) ss<<".sub";
  ss << ".RECON-" << this->reconDim 
     << "-"       << this->filterCode
     << "-"       << this->snrRecon
     << "-"       << this->scaleMin
     << ".fits";
  return ss.str();
}

std::string Param::outputResidFile()
{
  /** 
   * This function produces the required filename in which to save
   *  the reconstructed array. If the input image is image.fits, then
   *  the output will be eg. image.RESID-3-2-4-1.fits, where the numbers are
   *  3=reconDim, 2=filterCode, 4=snrRecon, 1=scaleMin
   */
  std::string inputName = this->imageFile;
  std::stringstream ss;
  ss << inputName.substr(0,inputName.size()-5);  // remove the ".fits" on the end.
  if(this->flagSubsection) ss<<".sub";
  ss << ".RESID-" << this->reconDim 
     << "-"       << this->filterCode
     << "-"       << this->snrRecon
     << "-"       << this->scaleMin
     << ".fits";
  return ss.str();
}