lsst.skymap gc3e9b769f7+f8a3f20ab6
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Classes | Functions | Variables
lsst.skymap.detail.dodecahedron Namespace Reference

Classes

class  Dodecahedron
 

Functions

 computeRotationMatrix (angle, axis)
 
 _computeCoordTransform (vec0, vec1, vec1NegativeX=False)
 
 _computeDodecahedronVertices (faceVecList)
 
 _computeFullVecList (basisSet)
 
 _findCloseIndexSet (vecList, ind)
 
 _findCloseList (vecList, vec)
 
 _findClosePair (vecList, ind=0)
 
 _sortedVectorList (vecList)
 

Variables

 precision
 
 suppress
 
 True
 
 linewidth
 
 vertexDodec = Dodecahedron(withFacesOnPoles=False)
 
 faceVec = vertexDodec.getFaceCtr(i)
 

Function Documentation

◆ _computeCoordTransform()

lsst.skymap.detail.dodecahedron._computeCoordTransform ( vec0,
vec1,
vec1NegativeX = False )
protected
Compute a rotation matrix that puts vec0 along z and vec1 along +x in
the xz plane.

Parameters
----------
vec0 : `numpy.ndarray`
    vector 0
vec1 : `numpy.ndarray`
    vector 1
vec1NegativeX : `bool`
    If True then vec1 is rotated to face negative x.

Definition at line 138 of file dodecahedron.py.

◆ _computeDodecahedronVertices()

lsst.skymap.detail.dodecahedron._computeDodecahedronVertices ( faceVecList)
protected
Given a vector of face positions of a Dodecahedron compute the vertices.

Definition at line 172 of file dodecahedron.py.

◆ _computeFullVecList()

lsst.skymap.detail.dodecahedron._computeFullVecList ( basisSet)
protected
Given a collection of basis vectors, compute all permutations with both
signs of all nonzero values.

For example::

    [(0, 1, 2)] -> [(0, 1, 2), (0, -1, 2), (0, 1, -2), (0, -1, -2)]

Definition at line 201 of file dodecahedron.py.

◆ _findCloseIndexSet()

lsst.skymap.detail.dodecahedron._findCloseIndexSet ( vecList,
ind )
protected
Given a list of cartesian vectors, return a set of indices of those
closest to one of them.

This is intended for regular grids where distances are quantized.

Parameters
----------
vecList : `list`
    List of cartesian vectors.
ind : `int`
    Index of vector to be nearest.

Definition at line 226 of file dodecahedron.py.

◆ _findCloseList()

lsst.skymap.detail.dodecahedron._findCloseList ( vecList,
vec )
protected
Given a list of cartesian vectors, return all those closest to a
specified position

This is intended for regular grids where distances are quantized

Parameters
----------
vecList : `list`
    List of cartesian vectors.
vec : `iterable` of `float`
    Vector to be near.

Returns
-------
retList : `list`
    List of closest vectors.
indList : `list`
    List if indices of those vectors.

Definition at line 246 of file dodecahedron.py.

◆ _findClosePair()

lsst.skymap.detail.dodecahedron._findClosePair ( vecList,
ind = 0 )
protected
Given a list of cartesian vectors and an index, return the vector and
one of its closest neighbors.

Parameters
----------
vecList : `list` of `numpy.ndarray`
    List of cartesian vectors.
ind : `int`
    Index of first vector.

Definition at line 273 of file dodecahedron.py.

◆ _sortedVectorList()

lsst.skymap.detail.dodecahedron._sortedVectorList ( vecList)
protected
Return a list of cartesian vectors sorted by decreasing latitude and
increasing longitude.

Definition at line 290 of file dodecahedron.py.

◆ computeRotationMatrix()

lsst.skymap.detail.dodecahedron.computeRotationMatrix ( angle,
axis )
Return a 3D rotation matrix for rotation by a specified amount around a
specified axis.

Parameters
----------
angle : `float`
    Amount of rotation (rad).
axis : `int`
    Axis of rotation; one of 0, 1 or 2 for x, y or z.

Definition at line 116 of file dodecahedron.py.

Variable Documentation

◆ faceVec

lsst.skymap.detail.dodecahedron.faceVec = vertexDodec.getFaceCtr(i)

Definition at line 311 of file dodecahedron.py.

◆ linewidth

lsst.skymap.detail.dodecahedron.linewidth

Definition at line 306 of file dodecahedron.py.

◆ precision

lsst.skymap.detail.dodecahedron.precision

Definition at line 306 of file dodecahedron.py.

◆ suppress

lsst.skymap.detail.dodecahedron.suppress

Definition at line 306 of file dodecahedron.py.

◆ True

lsst.skymap.detail.dodecahedron.True

Definition at line 306 of file dodecahedron.py.

◆ vertexDodec

lsst.skymap.detail.dodecahedron.vertexDodec = Dodecahedron(withFacesOnPoles=False)

Definition at line 309 of file dodecahedron.py.