Classes
class	MultibandPixel

class	MultibandImageBase

class	MultibandImage

class	MultibandMask

class	MultibandTripleBase

class	MultibandMaskedImage

Functions
def	makeImageFromSingles (cls, filters, singles)

def	makeImageFromKwargs (cls, filters, filterKwargs, singleType=ImageF, **kwargs)

def	tripleFromSingles (cls, filters, singles, **kwargs)

def	tripleFromArrays (cls, filters, image, mask, variance, bbox=None)

def	makeTripleFromKwargs (cls, filters, filterKwargs, singleType, **kwargs)

Function Documentation

◆ makeImageFromKwargs()

def lsst.afw.image.image._multiband.makeImageFromKwargs	(		cls,
			filters,
			filterKwargs,
			singleType = `ImageF`,
		**	kwargs
	)

Build a MultibandImage from a set of keyword arguments

Parameters
----------
filters : `list`
   List of filter names.
singleType : class
   Class of the single band objects.
   This is ignored unless `singles` and `array`
   are both `None`, in which case it is required.
filterKwargs : `dict`
   Keyword arguments to initialize a new instance of an inherited class
   that are different for each filter.
   The keys are the names of the arguments and the values
   should also be dictionaries, with filter names as keys
   and the value of the argument for a given filter as values.
kwargs : `dict`
   Keyword arguments to initialize a new instance of an
   inherited class that are the same in all bands.

Definition at line 297 of file _multiband.py.

 def makeImageFromKwargs(cls, filters, filterKwargs, singleType=ImageF, **kwargs):
     """Build a MultibandImage from a set of keyword arguments
  
     Parameters
     ----------
     filters : `list`
        List of filter names.
     singleType : class
        Class of the single band objects.
        This is ignored unless `singles` and `array`
        are both `None`, in which case it is required.
     filterKwargs : `dict`
        Keyword arguments to initialize a new instance of an inherited class
        that are different for each filter.
        The keys are the names of the arguments and the values
        should also be dictionaries, with filter names as keys
        and the value of the argument for a given filter as values.
     kwargs : `dict`
        Keyword arguments to initialize a new instance of an
        inherited class that are the same in all bands.
     """
     # Attempt to load a set of images
     singles = []
     for f in filters:
         if filterKwargs is not None:
             for key, value in filterKwargs:
                 kwargs[key] = value[f]
         singles.append(singleType(**kwargs))
     return cls.makeImageFromSingles(filters, singles)
  
  

◆ makeImageFromSingles()

def lsst.afw.image.image._multiband.makeImageFromSingles	(	cls,
		filters,
		singles
	)

Construct a MultibandImage from a collection of single band images

Parameters
----------
filters : `list`
   List of filter names.
singles : `list`
   A list of single band objects.
   If `array` is not `None`, then `singles` is ignored

Definition at line 279 of file _multiband.py.

 def makeImageFromSingles(cls, filters, singles):
     """Construct a MultibandImage from a collection of single band images
  
     Parameters
     ----------
     filters : `list`
        List of filter names.
     singles : `list`
        A list of single band objects.
        If `array` is not `None`, then `singles` is ignored
     """
     array = np.array([image.array for image in singles], dtype=singles[0].array.dtype)
     if not np.all([image.getBBox() == singles[0].getBBox() for image in singles[1:]]):
         raise ValueError("Single band images did not all have the same bounding box")
     bbox = singles[0].getBBox()
     return cls(filters, array, bbox)
  
  

◆ makeTripleFromKwargs()

def lsst.afw.image.image._multiband.makeTripleFromKwargs	(		cls,
			filters,
			filterKwargs,
			singleType,
		**	kwargs
	)

Build a MultibandImage from a set of keyword arguments

Parameters
----------
filters : `list`
   List of filter names.
singleType : `class`
   Class of the single band objects.
   This is ignored unless `singles` and `array`
   are both `None`, in which case it is required.
filterKwargs : `dict`
   Keyword arguments to initialize a new instance of an inherited class
   that are different for each filter.
   The keys are the names of the arguments and the values
   should also be dictionaries, with filter names as keys
   and the value of the argument for a given filter as values.
kwargs : `dict`
   Keyword arguments to initialize a new instance of an inherited
   class that are the same in all bands.

Definition at line 770 of file _multiband.py.

 def makeTripleFromKwargs(cls, filters, filterKwargs, singleType, **kwargs):
     """Build a MultibandImage from a set of keyword arguments
  
     Parameters
     ----------
     filters : `list`
        List of filter names.
     singleType : `class`
        Class of the single band objects.
        This is ignored unless `singles` and `array`
        are both `None`, in which case it is required.
     filterKwargs : `dict`
        Keyword arguments to initialize a new instance of an inherited class
        that are different for each filter.
        The keys are the names of the arguments and the values
        should also be dictionaries, with filter names as keys
        and the value of the argument for a given filter as values.
     kwargs : `dict`
        Keyword arguments to initialize a new instance of an inherited
        class that are the same in all bands.
     """
     # Attempt to load a set of images
     singles = []
     for f in filters:
         if filterKwargs is not None:
             for key, value in filterKwargs:
                 kwargs[key] = value[f]
         singles.append(singleType(**kwargs))
     return tripleFromSingles(cls, filters, singles)
  
  

◆ tripleFromArrays()

def lsst.afw.image.image._multiband.tripleFromArrays	(	cls,
		filters,
		image,
		mask,
		variance,
		bbox = `None`
	)

Construct a MultibandTriple from a set of arrays

Parameters
----------
filters : `list`
   List of filter names.
image : array
   Array of image values
mask : array
   Array of mask values
variance : array
   Array of variance values
bbox : `Box2I`
   Location of the array in a larger single band image.
   This argument is ignored if `singles` is not `None`.

Definition at line 739 of file _multiband.py.

 def tripleFromArrays(cls, filters, image, mask, variance, bbox=None):
     """Construct a MultibandTriple from a set of arrays
  
     Parameters
     ----------
     filters : `list`
        List of filter names.
     image : array
        Array of image values
     mask : array
        Array of mask values
     variance : array
        Array of variance values
     bbox : `Box2I`
        Location of the array in a larger single band image.
        This argument is ignored if `singles` is not `None`.
     """
     if bbox is None:
         bbox = Box2I(Point2I(0, 0), Extent2I(image.shape[1], image.shape[0]))
     mImage = MultibandImage(filters, image, bbox)
     if mask is not None:
         mMask = MultibandMask(filters, mask, bbox)
     else:
         mMask = None
     if variance is not None:
         mVariance = MultibandImage(filters, variance, bbox)
     else:
         mVariance = None
     return cls(filters, mImage, mMask, mVariance)
  
  

◆ tripleFromSingles()

def lsst.afw.image.image._multiband.tripleFromSingles	(		cls,
			filters,
			singles,
		**	kwargs
	)

Construct a MultibandTriple from a collection of single band objects

Parameters
----------
filters : `list`
   List of filter names.
singles : `list`
   A list of single band objects.
   If `array` is not `None`, then `singles` is ignored

Definition at line 720 of file _multiband.py.

 def tripleFromSingles(cls, filters, singles, **kwargs):
     """Construct a MultibandTriple from a collection of single band objects
  
     Parameters
     ----------
     filters : `list`
        List of filter names.
     singles : `list`
        A list of single band objects.
        If `array` is not `None`, then `singles` is ignored
     """
     if not np.all([single.getBBox() == singles[0].getBBox() for single in singles[1:]]):
         raise ValueError("Single band images did not all have the same bounding box")
     image = MultibandImage.fromImages(filters, [s.image for s in singles])
     mask = MultibandMask.fromMasks(filters, [s.mask for s in singles])
     variance = MultibandImage.fromImages(filters, [s.variance for s in singles])
     return cls(filters, image, mask, variance, **kwargs)
  
  