author | A.M. Thurnherr <athurnherr@yahoo.com> |
Tue, 18 Jun 2013 11:34:41 +0000 | |
changeset 3 | 720b082fe33e |
parent 0 | 0a450563f904 |
permissions | -rw-r--r-- |
0
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function [gh,G,H] = IGRF95 |
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% MATLAB routine to load Schmidt-normalized coefficients |
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% retrieved from ftp://nssdc.gsfc.nasa.gov/pub/models/igrf/ |
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% igrf95.dat 1 Kb Mon Nov 13 00:00:00 1995 |
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% ? C.E. Barton, Revision of International Geomagnetic Reference |
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% Field Released, EOS Transactions 77, #16, April 16, 1996. |
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% The coefficients are from the 1995 International Geomagnetic Reference Field |
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% Carlos Roithmayr, Jan. 22, 1997. |
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9 |
%++++++++++++++++++++++++++++++++++++++++++ |
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% The number 1 is added to ALL subscripts since MATLAB can't have an array |
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11 |
% index of 0. Units of Tesla |
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% |
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% MARTIN VISBECK, LDEO Feb 2000 |
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% !!! CAUTION when updating the values NEVER us a 0. where use 0.1 instead!!! |
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% I use the zeros to throw unused coeffs away....! |
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|
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G(2,1) = -29682e-9; |
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G(2,2) = -1789e-9; H(2,2) = 5318e-9; |
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G(3,1) = -2197e-9; H(3,1) = 0.0; |
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G(3,2) = 3074e-9; H(3,2) = -2356e-9; |
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G(3,3) = 1685e-9; H(3,3) = -425e-9; |
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G(4,1) = 1329e-9; H(4,1) = 0.0; |
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G(4,2) = -2268e-9; H(4,2) = -263e-9; |
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G(4,3) = 1249e-9; H(4,3) = 302e-9; |
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G(4,4) = 769e-9; H(4,4) = -406e-9; |
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G(5,1) = 941e-9; H(5,1) = .0; |
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G(5,2) = 782e-9; H(5,2) = 262e-9; |
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G(5,3) = 291e-9; H(5,3) = -232e-9; |
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G(5,4) = -421e-9; H(5,4) = 98e-9; |
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G(5,5) = 116e-9; H(5,5) = -301e-9; |
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G(6,1) = -210e-9; H(6,1) = .0; |
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G(6,2) = 352e-9; H(6,2) = 44e-9; |
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G(6,3) = 237e-9; H(6,3) = 157e-9; |
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G(6,4) = -122e-9; H(6,4) = -152e-9; |
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G(6,5) = -167e-9; H(6,5) = -64e-9; |
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G(6,6) = -26e-9; H(6,6) = 99e-9; |
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G(7,1) = 66e-9; H(7,1) = .0; |
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G(7,2) = 64e-9; H(7,2) = -16e-9; |
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G(7,3) = 65e-9; H(7,3) = 77e-9; |
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G(7,4) = -172e-9; H(7,4) = 67e-9; |
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G(7,5) = 2e-9; H(7,5) = -57e-9; |
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G(7,6) = 17e-9; H(7,6) = 4e-9; |
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G(7,7) = -94e-9; H(7,7) = 28e-9; |
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G(8,1) = 78e-9; H(8,1) = -.0; |
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G(8,2) = -67e-9; H(8,2) = -77e-9; |
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G(8,3) = 1e-9; H(8,3) = -25e-9; |
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G(8,4) = 29e-9; H(8,4) = 3e-9; |
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G(8,5) = 4e-9; H(8,5) = 22e-9; |
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G(8,6) = 8e-9; H(8,6) = 16e-9; |
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G(8,7) = 10e-9; H(8,7) = -23e-9; |
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G(8,8) = -2e-9; H(8,8) = -3e-9; |
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G(9,1) = 24e-9; H(9,1) = .0; |
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G(9,2) = 4e-9; H(9,2) = 12e-9; |
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G(9,3) = -1e-9; H(9,3) = -20e-9; |
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G(9,4) = -9e-9; H(9,4) = 7e-9; |
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G(9,5) = -14e-9; H(9,5) = -21e-9; |
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G(9,6) = 4e-9; H(9,6) = 12e-9; |
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G(9,7) = 5e-9; H(9,7) = 10e-9; |
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G(9,8) = 0.1e-9; H(9,8) = -17e-9; |
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G(9,9) = -7e-9; H(9,9) = -10e-9; |
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G(10,1) = 4e-9; H(10,1) = .0; |
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G(10,2) = 9e-9; H(10,2) = -19e-9; |
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G(10,3) = 1e-9; H(10,3) = 15e-9; |
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G(10,4) = -12e-9; H(10,4) = 11e-9; |
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G(10,5) = 9e-9; H(10,5) = -7e-9; |
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G(10,6) = -4e-9; H(10,6) = -7e-9; |
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G(10,7) = -2e-9; H(10,7) = 9e-9; |
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G(10,8) = 7e-9; H(10,8) = 7e-9; |
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G(10,9) = 0.1e-9; H(10,9) = -8e-9; |
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G(10,10) = -6e-9; H(10,10) = 1e-9; |
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G(11,1) = -3e-9; H(11,1) = .0; |
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G(11,2) = -4e-9; H(11,2) = 2e-9; |
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G(11,3) = 2e-9; H(11,3) = 1e-9; |
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G(11,4) = -5e-9; H(11,4) = 3e-9; |
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G(11,5) = -2e-9; H(11,5) = 6e-9; |
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G(11,6) = 4e-9; H(11,6) = -4e-9; |
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G(11,7) = 3e-9; H(11,7) = 0.1e-9; |
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G(11,8) = 1e-9; H(11,8) = -2e-9; |
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G(11,9) = 3e-9; H(11,9) = 3e-9; |
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G(11,10) = 3e-9; H(11,10) = -1e-9; |
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G(11,11) = 0.1e-9; H(11,11) = -6e-9; |
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|
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% prepare compressed array |
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|
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g=reshape(G',11*11,1)*1e9; |
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h=reshape(H',11*11,1)*1e9; |
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87 |
|
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gh=reshape([g,h]',2*11*11,1); |
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% here is where zeros have a meaning....!!!! |
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ii=find(gh==0); |
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gh(ii)=[]; |
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92 |
|
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A.M. Thurnherr <ant@ldeo.columbia.edu>
parents:
diff
changeset
|
93 |
return; |
0a450563f904
VIX_6: first version for Mercurial release
A.M. Thurnherr <ant@ldeo.columbia.edu>
parents:
diff
changeset
|
94 |
|
0a450563f904
VIX_6: first version for Mercurial release
A.M. Thurnherr <ant@ldeo.columbia.edu>
parents:
diff
changeset
|
95 |