SPHERE_LEBEDEV_RULE
Quadrature Rules for the Unit Sphere
SPHERE_LEBEDEV_RULE
is a C library which
computes a Lebedev quadrature rule
over the surface of the unit sphere in 3D.
Vyacheslav Lebedev determined a family of 65 quadrature rules for the
unit sphere, increasing in precision from 3 to 131, by 2 each time.
This software library computes any one of a subset of 32 of these rules.
Each rule is defined as a list of N values of theta,
phi, and w.
Here:
-
theta is a longitudinal angle, measured in degrees,
and ranging from -180 to +180.
-
phi is a latitudinal angle, measured in degrees,
and ranging from 0 to 180.
-
w is a weight.
Of course, each pair of values
(thetai, phii) has a corresponding
Cartesian representation:
xi = cos ( thetai ) * sin ( phii )
yi = sin ( thetai ) * sin ( phii )
zi = cos ( phii )
which may be more useful when evaluating integrands.
The integral of a function f(x,y,z) over the surface of the
unit sphere can be approximated by
integral f(x,y,z) = 4 * pi * sum ( 1 <= i <= N )
f(xi,yi,zi)
Licensing:
The computer code and data files described and made available on this web page
are distributed under
the GNU LGPL license.
Languages:
SPHERE_LEBEDEV_RULE is available in
a C version and
a C++ version and
a FORTRAN90 version and
a MATLAB version.
Related Programs:
ANNULUS_RULE,
a C library which
computes a quadrature rule for estimating integrals of a function
over the interior of a circular annulus in 2D.
CIRCLE_RULE,
a C library which
computes quadrature rules
over the circumference of a circle in 2D.
CUBE_FELIPPA_RULE,
a C library which
returns the points and weights of a Felippa quadrature rule
over the interior of a cube in 3D.
PYRAMID_FELIPPA_RULE,
a C library which
returns Felippa's quadratures rules for approximating integrals
over the interior of a pyramid in 3D.
SPHERE_EXACTNESS,
a C program which
tests the monomial exactness of a quadrature rule
on the surface of the unit sphere in 3D.
SPHERE_GRID,
a C library which
provides a number of ways of generating grids of points, or of
points and lines, or of points and lines and faces,
over the surface of the unit sphere in 3D.
SPHERE_LEBEDEV_RULE,
a dataset directory which
contains quadrature rules
over the surface of the unit sphere in 3D.
SPHERE_QUAD,
a C library which
approximates an integral by applying a triangulation
over the surface of the unit sphere in 3D.
SQUARE_FELIPPA_RULE,
a C library which
returns the points and weights of a Felippa quadrature rule
over the interior of a square in 2D.
TETRAHEDRON_FELIPPA_RULE,
a C library which
returns Felippa's quadratures rules for approximating integrals
over the interior of a tetrahedron in 3D.
TRIANGLE_FEKETE_RULE,
a C library which
defines Fekete rules for interpolation or quadrature
over the interior of a triangle in 2D.
TRIANGLE_FELIPPA_RULE,
a C library which
returns Felippa's quadratures rules for approximating integrals
over the interior of a triangle in 2D.
WEDGE_FELIPPA_RULE,
a C library which
returns quadratures rules for approximating integrals
over the interior of the unit wedge in 3D.
Reference:
-
Axel Becke,
A multicenter numerical integration scheme for polyatomic molecules,
Journal of Chemical Physics,
Volume 88, Number 4, 15 February 1988, pages 2547-2553.
-
Vyacheslav Lebedev, Dmitri Laikov,
A quadrature formula for the sphere of the 131st
algebraic order of accuracy,
Russian Academy of Sciences Doklady Mathematics,
Volume 59, Number 3, 1999, pages 477-481.
-
Vyacheslav Lebedev,
A quadrature formula for the sphere of 59th algebraic
order of accuracy,
Russian Academy of Sciences Doklady Mathematics,
Volume 50, 1995, pages 283-286.
-
Vyacheslav Lebedev, A.L. Skorokhodov,
Quadrature formulas of orders 41, 47, and 53 for the sphere,
Russian Academy of Sciences Doklady Mathematics,
Volume 45, 1992, pages 587-592.
-
Vyacheslav Lebedev,
Spherical quadrature formulas exact to orders 25-29,
Siberian Mathematical Journal,
Volume 18, 1977, pages 99-107.
-
Vyacheslav Lebedev,
Quadratures on a sphere,
Computational Mathematics and Mathematical Physics,
Volume 16, 1976, pages 10-24.
-
Vyacheslav Lebedev,
Values of the nodes and weights of ninth to seventeenth
order Gauss-Markov quadrature formulae invariant under the
octahedron group with inversion,
Computational Mathematics and Mathematical Physics,
Volume 15, 1975, pages 44-51.
Source Code:
Examples and Tests:
List of Routines:
-
AVAILABLE_TABLE returns the availability of a Lebedev rule.
-
GEN_OH generates points under OH symmetry.
-
LD_BY_ORDER returns a Lebedev angular grid given its order.
-
LD0006 computes the 6 point Lebedev angular grid.
-
LD0014 computes the 14 point Lebedev angular grid.
-
LD0026 computes the 26 point Lebedev angular grid.
-
LD0038 computes the 38 point Lebedev angular grid.
-
LD0050 computes the 50 point Lebedev angular grid.
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LD0074 computes the 74 point Lebedev angular grid.
-
LD0086 computes the 86 point Lebedev angular grid.
-
LD0110 computes the 110 point Lebedev angular grid.
-
LD0146 computes the 146 point Lebedev angular grid.
-
LD0170 computes the 170 point Lebedev angular grid.
-
LD0194 computes the 194 point Lebedev angular grid.
-
LD0230 computes the 230 point Lebedev angular grid.
-
LD0266 computes the 266 point Lebedev angular grid.
-
LD0302 computes the 302 point Lebedev angular grid.
-
LD0350 computes the 350 point Lebedev angular grid.
-
LD0434 computes the 434 point Lebedev angular grid.
-
LD0590 computes the 590 point Lebedev angular grid.
-
LD0770 computes the 770 point Lebedev angular grid.
-
LD0974 computes the 974 point Lebedev angular grid.
-
LD1202 computes the 1202 point Lebedev angular grid.
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LD1454 computes the 1454 point Lebedev angular grid.
-
LD1730 computes the 1730 point Lebedev angular grid.
-
LD2030 computes the 2030 point Lebedev angular grid.
-
LD2354 computes the 2354 point Lebedev angular grid.
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LD2702 computes the 2702 point Lebedev angular grid.
-
LD3074 computes the 3074 point Lebedev angular grid.
-
LD3470 computes the 3470 point Lebedev angular grid.
-
LD3890 computes the 3890 point Lebedev angular grid.
-
LD4334 computes the 4334 point Lebedev angular grid.
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LD4802 computes the 4802 point Lebedev angular grid.
-
LD5294 computes the 5294 point Lebedev angular grid.
-
LD5810 computes the 5810 point Lebedev angular grid.
-
ORDER_TABLE returns the order of a Lebedev rule.
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PRECISION_TABLE returns the precision of a Lebedev rule.
-
TIMESTAMP prints the current YMDHMS date as a time stamp.
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XYZ_TO_TP converts (X,Y,Z) to (Theta,Phi) coordinates on the unit sphere.
You can go up one level to
the C source codes.
Last revised on 13 September 2010.