LSST Applications  21.0.0+c4f5df5339,21.0.0+e70536a077,21.0.0-1-ga51b5d4+7c60f8a6ea,21.0.0-10-gcf60f90+74aa0801fd,21.0.0-12-g63909ac9+643a1044a5,21.0.0-15-gedb9d5423+1041c3824f,21.0.0-2-g103fe59+a356b2badb,21.0.0-2-g1367e85+6d3f3f41db,21.0.0-2-g45278ab+e70536a077,21.0.0-2-g5242d73+6d3f3f41db,21.0.0-2-g7f82c8f+8d7c04eab9,21.0.0-2-g8f08a60+9c9a9cfcc8,21.0.0-2-ga326454+8d7c04eab9,21.0.0-2-gde069b7+bedfc5e1fb,21.0.0-2-gecfae73+6cb6558258,21.0.0-2-gfc62afb+6d3f3f41db,21.0.0-3-g21c7a62+f6e98b25aa,21.0.0-3-g357aad2+bd62456bea,21.0.0-3-g4be5c26+6d3f3f41db,21.0.0-3-g65f322c+03a4076c01,21.0.0-3-g7d9da8d+c4f5df5339,21.0.0-3-gaa929c8+c6b98066dc,21.0.0-3-gc44e71e+a26d5c1aea,21.0.0-3-ge02ed75+04b527a9d5,21.0.0-35-g64f566ff+b27e5ef93e,21.0.0-4-g591bb35+04b527a9d5,21.0.0-4-g88306b8+8773047b2e,21.0.0-4-gc004bbf+80a0b7acb7,21.0.0-4-gccdca77+a5c54364a0,21.0.0-4-ge8fba5a+ccfc328107,21.0.0-5-gdf36809+87b8d260e6,21.0.0-6-g00874e7+7eeda2b6ba,21.0.0-6-g2d4f3f3+e70536a077,21.0.0-6-g4e60332+04b527a9d5,21.0.0-6-g5ef7dad+f53629abd8,21.0.0-7-gc8ca178+b63e69433b,21.0.0-8-gfbe0b4b+c6b98066dc,w.2021.06
LSST Data Management Base Package
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lsst.afw.math.chebyshevBoundedFieldContinued.ChebyshevBoundedField Class Reference

Public Member Functions

def approximate (cls, boundedField, orderX=3, orderY=3, nStepX=100, nStepY=100)
 

Detailed Description

Definition at line 31 of file chebyshevBoundedFieldContinued.py.

Member Function Documentation

◆ approximate()

def lsst.afw.math.chebyshevBoundedFieldContinued.ChebyshevBoundedField.approximate (   cls,
  boundedField,
  orderX = 3,
  orderY = 3,
  nStepX = 100,
  nStepY = 100 
)
Approximate a bounded field as a ChebyshevBoundedField.

Parameters
----------
boundedField : `lsst.afw.math.BoundedField`
    A bounded field to approximate
orderX : `int`, optional
    Order of the Chebyshev polynomial in the x direction.
    Default is 3.
orderY : `int`, optional
    Order of the Chebyshev polynomial in the y direction.
    Default is 3.
nStepX : `int`, optional
    Number of x steps to approximate boundedField.
    Default is 100.
nStepY : `int`, optional
    Number of y steps to approximate boundedField.
    Default is 100.

Returns
-------
chebyshevBoundedField : `lsst.afw.math.ChebyshevBoundedField`

Definition at line 33 of file chebyshevBoundedFieldContinued.py.

35  nStepX=100, nStepY=100):
36  """
37  Approximate a bounded field as a ChebyshevBoundedField.
38 
39  Parameters
40  ----------
41  boundedField : `lsst.afw.math.BoundedField`
42  A bounded field to approximate
43  orderX : `int`, optional
44  Order of the Chebyshev polynomial in the x direction.
45  Default is 3.
46  orderY : `int`, optional
47  Order of the Chebyshev polynomial in the y direction.
48  Default is 3.
49  nStepX : `int`, optional
50  Number of x steps to approximate boundedField.
51  Default is 100.
52  nStepY : `int`, optional
53  Number of y steps to approximate boundedField.
54  Default is 100.
55 
56  Returns
57  -------
58  chebyshevBoundedField : `lsst.afw.math.ChebyshevBoundedField`
59  """
60 
61  ctrl = ChebyshevBoundedFieldControl()
62  ctrl.orderX = orderX
63  ctrl.orderY = orderY
64  ctrl.triangular = False
65 
66  bbox = boundedField.getBBox()
67 
68  xSteps = np.linspace(bbox.getMinX(), bbox.getMaxX(), nStepX)
69  ySteps = np.linspace(bbox.getMinY(), bbox.getMaxY(), nStepY)
70 
71  x = np.tile(xSteps, nStepY)
72  y = np.repeat(ySteps, nStepX)
73 
74  return cls.fit(bbox, x, y, boundedField.evaluate(x, y), ctrl)

The documentation for this class was generated from the following file: