source: tags/release-1.1.4/src/Utils/utils.hh @ 1441

// -----------------------------------------------------------------------
// utils.hh: Prototypes for utility functions.
// -----------------------------------------------------------------------
// Copyright (C) 2006, Matthew Whiting, ATNF
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or (at your
// option) any later version.
//
// Duchamp is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with Duchamp; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
//
// Correspondence concerning Duchamp may be directed to:
//    Internet email: Matthew.Whiting [at] atnf.csiro.au
//    Postal address: Dr. Matthew Whiting
//                    Australia Telescope National Facility, CSIRO
//                    PO Box 76
//                    Epping NSW 1710
//                    AUSTRALIA
// -----------------------------------------------------------------------
#ifndef UTILS_H
#define UTILS_H

#include <wcslib/wcs.h>
#include <string>

struct wcsprm; // just foreshadow this.

// define the speed of light for WCS-related accessor functions 
const float C_kms = 299792.458;

int linear_regression(int num, float *x, float *y, int ilow, int ihigh, 
                      float &slope, float &errSlope, 
                      float &intercept, float &errIntercept, float &r);
void zscale(long imagesize, float *image, float &z1, float &z2);
void zscale(long imagesize, float *image, float &z1, float &z2, float nullVal);
template <class T> void sort(T *arr, int begin, int end);
template <class T1, class T2> void sort(T1 *arr, T2 *matchingArray, 
                                        int begin, int end);

// STATISTICS-RELATED ROUTINES
template <class T> T absval(T value);
template <class T> void findMinMax(const T *array, const int size, 
                                   T &min, T &max);
template <class T> float findMean(T *array, int size);
template <class T> float findStddev(T *array, int size);
template <class T> T findMedian(T *array, int size);
template <class T> T findMADFM(T *array, int size);
template <class T> void findMedianStats(T *array, int size, 
                                        T &median, T &madfm);
template <class T> void findMedianStats(T *array, int size, bool *isGood, 
                                        T &median, T &madfm);
template <class T> void findNormalStats(T *array, int size, 
                                        float &mean, float &stddev);
template <class T> void findNormalStats(T *array, int size, bool *isGood, 
                                        float &mean, float &stddev);
template <class T> void findAllStats(T *array, int size, 
                                     float &mean, float &stddev,
                                     T &median, T &madfm);
template <class T> void findAllStats(T *array, int size, bool *mask, 
                                     float &mean, float &stddev,
                                     T &median, T &madfm);


// POSITION-RELATED ROUTINES
std::string getIAUNameEQ(double ra, double dec, float equinox);
std::string getIAUNameGAL(double ra, double dec);
std::string decToDMS(double dec, std::string type);
double dmsToDec(std::string dms);
double angularSeparation(double &ra1, double &dec1, double &ra2, double &dec2);

// WCS-RELATED ROUTINES
int wcsToPixSingle(struct wcsprm *wcs, const double *world, double *pix);
int pixToWCSSingle(struct wcsprm *wcs, const double *pix, double *world);
int wcsToPixMulti(struct wcsprm *wcs, const double *world, 
                  double *pix, const int npts);
int pixToWCSMulti(struct wcsprm *wcs, const double *pix, 
                  double *world, const int npts);
double pixelToVelocity(struct wcsprm *wcs, double &x, double &y, 
                       double &z, std::string velUnits);
double coordToVel(struct wcsprm *wcs, const double coord, std::string outputUnits);
double velToCoord(struct wcsprm *wcs, const float velocity, std::string outputUnits);

// FILTER SMOOTHING ROUTINES
void waveletSmooth(int dim,float *array, int arraySize, float sigma);
void hanningSmooth(float *array, int arraySize, int hanningSize);
void tophatSmooth(float *array, int arraySize, int width);

#endif