Line data    Source code

       1             : //# Copyright (C) 2009
       2             : //# Associated Universities, Inc. Washington DC, USA.
       3             : //#
       4             : //# This library is free software; you can redistribute it and/or modify it
       5             : //# under the terms of the GNU Library General Public License as published by
       6             : //# the Free Software Foundation; either version 2 of the License, or (at your
       7             : //# option) any later version.
       8             : //#
       9             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      10             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      11             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      12             : //# License for more details.
      13             : //#
      14             : //# You should have received a copy of the GNU Library General Public License
      15             : //# along with this library; if not, write to the Free Software Foundation,
      16             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      17             : //#
      18             : //# Correspondence concerning AIPS++ should be addressed as follows:
      19             : //#        Internet email: casa-feedback@nrao.edu.
      20             : //#        Postal address: AIPS++ Project Office
      21             : //#                        National Radio Astronomy Observatory
      22             : //#                        520 Edgemont Road
      23             : //#                        Charlottesville, VA 22903-2475 USA
      24             : //#
      25             : //# $Id$
      26             : 
      27             : #ifndef IMAGEANALYSIS_IMAGEMETADATABASE_H
      28             : #define IMAGEANALYSIS_IMAGEMETADATABASE_H
      29             : 
      30             : #include <casacore/images/Images/ImageInterface.h>
      31             : #include <imageanalysis/ImageTypedefs.h>
      32             : #include <casacore/casa/aips.h>
      33             : 
      34             : namespace casa {
      35             : 
      36             : // <summary>
      37             : // Base class for image metadata access.
      38             : // </summary>
      39             : 
      40             : // <use visibility=export>
      41             : 
      42             : // <reviewed reviewer="" date="" tests="" demos="">
      43             : // </reviewed>
      44             : 
      45             : // <prerequisite>
      46             : //   <li> <linkto class=casacore::ImageInterface>ImageInterface</linkto>
      47             : // </prerequisite>
      48             : 
      49             : // <etymology>
      50             : // </etymology>
      51             : 
      52             : // <synopsis> 
      53             : // </synopsis>
      54             : 
      55             : // <example>
      56             : // </example>
      57             : 
      58             : // <motivation> 
      59             : 
      60             : // </motivation>
      61             : 
      62             : class ImageMetaDataConstants {
      63             : public:
      64             :     const static casacore::String MASKS;
      65             :     
      66             :     const static casacore::String _BEAMMAJOR, _BEAMMINOR, _BEAMPA, _BMAJ, _BMIN, _BPA,
      67             :         _BUNIT, _CDELT, _CRPIX, _CRVAL, _CTYPE, _CUNIT, _DATAMAX, _DATAMIN,
      68             :         _EPOCH, _EQUINOX, _IMTYPE, _MAXPIXPOS, _MAXPOS, _MINPIXPOS,
      69             :         _MINPOS, _OBJECT, _OBSDATE, _OBSERVER, _PROJECTION,
      70             :         _RESTFREQ, _REFFREQTYPE, _SHAPE, _TELESCOPE;
      71             : 
      72             : };
      73             : 
      74             : template <class T> class ImageMetaDataBase {
      75             : 
      76             : public:
      77             : 
      78             : 
      79             :     ImageMetaDataBase() = delete;
      80             :     
      81           0 :     virtual ~ImageMetaDataBase() {}
      82             : 
      83             :     casacore::CoordinateSystem coordsys(const std::vector<casacore::Int>& axes) const;
      84             : 
      85             :     casacore::DataType dataType() const;
      86             : 
      87             :     casacore::uInt nChannels() const;
      88             : 
      89             :     // Is the specified channel number valid for this image?
      90             :     casacore::Bool isChannelNumberValid(const casacore::uInt chan) const;
      91             : 
      92             :     // Get the pixel number on the polarization axis of the specified stokes parameter.
      93             :     // If the specified stokes parameter does not exist in the image, the value returned
      94             :     // is not gauranteed to be anything other than outside the range of 0 to nStokes-1
      95             :     // inclusive. Return -1 if the specified stokes parameter is not present or
      96             :     // if this image does not have a polarization axis.
      97             :  
      98             :     casacore::Int stokesPixelNumber(const casacore::String& stokesString) const;
      99             : 
     100             :     // get the stokes parameter at the specified pixel value on the polarization axis.
     101             :     // returns "" if the specified pixel is out of range or if no polarization axis.
     102             : 
     103             :     casacore::String stokesAtPixel(const casacore::uInt pixel) const;
     104             : 
     105             :     // Get the number of stokes parameters in this image.
     106             :     casacore::uInt nStokes() const;
     107             : 
     108             :     // is the specified stokes parameter present in the image?
     109             :     casacore::Bool isStokesValid(const casacore::String& stokesString) const;
     110             : 
     111             :     // Get the shape of the direction axes. Returns a two element
     112             :     // casacore::Vector if there is a direction coordinate, if not returns a zero element
     113             :     // vector.
     114             : 
     115             :     casacore::Vector<casacore::Int> directionShape() const;
     116             : 
     117             :     // if the specified stokes parameter is valid. A message suitable for
     118             :     // error notification is returned in the form of an in-out parameter
     119             :     //if one or both of these is invalid.
     120             :     casacore::Bool areChannelAndStokesValid(
     121             :         casacore::String& message, const casacore::uInt chan, const casacore::String& stokesString
     122             :     ) const;
     123             : 
     124             :     // get the bounding box in the image for the specified region.
     125             :     casacore::Record* getBoundingBox(const casacore::Record& region) const;
     126             : 
     127             :     // convert the header info to a casacore::Record and list to logger if verbose=true
     128             :     virtual casacore::Record toRecord(casacore::Bool verbose) const = 0;
     129             : 
     130             :     // get the value of the datum corresponding to the given casacore::FITS keyword.
     131             :     casacore::ValueHolder getFITSValue(const casacore::String& key) const;
     132             : 
     133             :     // if doVelocity=true, compute spectral velocities as well as frequencies, if false, only
     134             :     // compute frequencies.
     135             :     // <src>dirFrame</src> and <src>freqFrame</src> are the codes for the
     136             :     // frames for which it is desired that the returned measures should be specified.
     137             :     // In both cases, one can specify "native" for the native coordinate frame,
     138             :     // "cl" for the conversion layer frame, or any valid frame string from casacore::MDirection::showType()
     139             :     // or casacore::MFrequency::showType().
     140             :     casacore::Record toWorld(
     141             :         const casacore::Vector<double>& value, const casacore::String& format = "n",
     142             :         casacore::Bool doVelocity=true, const casacore::String& dirFrame="cl",
     143             :         const casacore::String& freqFrame="cl"
     144             :     ) const;
     145             : 
     146             : protected:
     147             :     ImageMetaDataBase(SPCIIT);
     148             :     
     149             :     casacore::LogIO& _getLog() { return _log; }
     150             : 
     151             :     virtual const casacore::ImageInfo& _getInfo() const = 0;
     152             : 
     153             :     virtual const casacore::CoordinateSystem& _getCoords() const = 0;
     154             : 
     155             :     virtual casacore::Vector<casacore::String> _getAxisNames() const = 0;
     156             : 
     157             :     virtual casacore::Vector<casacore::String> _getAxisUnits() const = 0;
     158             : 
     159             :     virtual casacore::GaussianBeam _getBeam() const = 0;
     160             : 
     161             :     virtual casacore::String _getBrightnessUnit() const = 0;
     162             : 
     163             :     virtual casacore::String _getImType() const = 0;
     164             : 
     165             :     virtual std::vector<casacore::Quantity> _getIncrements() const = 0;
     166             : 
     167             :     virtual casacore::Vector<casacore::String> _getMasks() const = 0;
     168             : 
     169             :     virtual casacore::String _getObject() const = 0;
     170             : 
     171             :     virtual casacore::String _getEquinox() const = 0;
     172             : 
     173             :     virtual casacore::MEpoch _getObsDate() const = 0;
     174             : 
     175             :     casacore::String _getEpochString() const;
     176             : 
     177             :     virtual casacore::String _getObserver() const = 0;
     178             : 
     179             :     virtual casacore::String _getProjection() const;
     180             : 
     181             :     virtual casacore::String _getRefFreqType() const = 0;
     182             : 
     183             :     virtual casacore::Vector<casacore::Double> _getRefPixel() const = 0;
     184             : 
     185             :     virtual casacore::Vector<casacore::Quantity> _getRefValue() const = 0;
     186             : 
     187             :     virtual casacore::Quantity _getRestFrequency() const = 0;
     188             : 
     189             :     casacore::IPosition _getShape() const;
     190             : 
     191             :     virtual casacore::Record _getStatistics() const = 0;
     192             : 
     193             :     virtual casacore::String _getTelescope() const = 0;
     194             : 
     195             :     casacore::Record _makeHeader() const;
     196             : 
     197             :     void _toLog(const casacore::Record& header) const;
     198             : 
     199             :     casacore::uInt _getAxisNumber(const casacore::String& key) const;
     200             : 
     201             :     casacore::Record _calcStats() const;
     202             : 
     203             :     const casacore::TableRecord _miscInfo() const;
     204             : 
     205             :     casacore::uInt _ndim() const;
     206             : 
     207             :     virtual casacore::Vector<casacore::String> _getStokes() const = 0;
     208             : 
     209             : private:
     210             :     SPCIIT _image;
     211             :     mutable casacore::LogIO _log;
     212             :     mutable casacore::IPosition _shape;
     213             : 
     214             :     // precision < 0 => use default precision when printing numbers
     215             :     void _fieldToLog(const casacore::Record& header, const casacore::String& field, casacore::Int precision=-1) const;
     216             : 
     217             :     casacore::String _doStandardFormat(casacore::Double value, const casacore::String& unit) const;
     218             : 
     219             :     casacore::Record _calcStatsT(
     220             :         std::shared_ptr<const casacore::ImageInterface<T> > image
     221             :     ) const;
     222             : 
     223             :     static casacore::Record _worldVectorToRecord(
     224             :         const casacore::CoordinateSystem& csys, const casacore::Vector<casacore::Double>& world, casacore::Int c,
     225             :         const casacore::String& format,
     226             :         casacore::Bool isAbsolute, casacore::Bool showAsAbsolute, casacore::Bool doVelocity,
     227             :         casacore::MDirection::Types dirFrame, casacore::MFrequency::Types freqFrame
     228             :     );
     229             : 
     230             :     static casacore::Record _worldVectorToMeasures(
     231             :         const casacore::CoordinateSystem& csys,
     232             :         const casacore::Vector<casacore::Double>& world, casacore::Int c, casacore::Bool abs, casacore::Bool doVelocity,
     233             :         casacore::MDirection::Types dirFrame, casacore::MFrequency::Types freqFrame
     234             :     );
     235             : 
     236             : };
     237             : 
     238             : }
     239             : 
     240             : #ifndef AIPS_NO_TEMPLATE_SRC
     241             : #include <imageanalysis/ImageAnalysis/ImageMetaDataBase.tcc>
     242             : #endif //# AIPS_NO_TEMPLATE_SRC
     243             : 
     244             : #endif