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SOFiA Lebedev Quadrature Grids
This function computes Lebedev quadrature nodes and weigths
in the SOFiA/VariSphear data format.
ARGUMENTS
Input
| Name |
Type |
Purpose |
Default |
| Degree |
int |
Degree/Number of points
Valid Degrees are:
6, 14, 26, 38, 50, 74, 86, 110, 146, 170,
194, 230, 266, 302, 350, 434, 590, 770,
974, 1202, 1454, 1730, 2030, 2354, 2702,
3074, 3470, 3890, 4334, 4802, 5294, 5810
Call: sofia_lebedev() to obtain valid degrees |
|
- |
| plot |
int |
Schow globe plot of the grid
0: Plot off, 1: Plot on |
1 |
Output
| Name |
Type |
Purpose |
| gridData |
float mtx |
Quadrature grid, positions and weights (W):
AZ1 EL1 W1 AZ2 EL2 W2 ... AZM ELM WM for M Positions |
| Npoints |
int |
Number of sampling points |
| Nmax |
int |
Maximum Grid Order |
Angles AZ, EL are in RAD
Example
Lebedev 50P Quadrature
FILE(S):
| File |
Type |
OS/Matlab |
| sofia_lebedev.m |
Help header, Fuction |
All OS |
SOURCE OF THE QUADRATURE
Written by: Rob Parrish, The Sherril Group, CCMST Georgia Tech. Date 03/24/2010
HEADER
/*
[gridData, Npoints, Nmax] = sofia_lebedev(degree, plot)
------------------------------------------------------------------------------------
|
gridData |
Lebedev quadrature including weigths(W):
[AZ_1 EL_1 W_1;
AZ_2 EL_2 W_2;
...
AZ_n EL_n W_n] |
Npoint |
Total number of nodes |
Nmax |
Highest stable grid order |
------------------------------------------------------------------------------------ |
Order |
Lebedev Degree (Number of nodes)
Call sofia_lebedev() to obtain a
list of valid degrees
|
plot |
Show a globe plot of the selected grid
0: Off, 1: ON [default] |
*/ |
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