Fault-Inversion-Auto/Fun_SetInvFaultTrim.m at main · Yuxiao-git2025/Fault-Inversion-Auto · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
function [g, locasub, locadep, muSubfault, ...
          substf, slip, grid, source] = Fun_SetInvFaultTrim( ...
          g, locasub, locadep, muSubfault, ...
          substf, substfa, grid, source, ...
          gridsize, CCritSlip)
% =========================================================================
% Fun_FinalFaultTrim
%
% Trim subfaults outside the final main rupture region.
%
% The last page of substfa is used because it stores the final inversion
% result generated by ids_data.
% =========================================================================

if isempty(substfa)
    error('substfa is empty. Final fault trimming cannot be performed.');
end

% Slip before trimming, using the final inversion page.
fSlip = sum(substfa(:, :, end), 1) ./ 3e16 ./ prod(gridsize);

% kf is the index vector of retained subfaults.
[kf, grid, source] = adjust_grid( ...
    fSlip, grid, source, CCritSlip);

if isempty(kf)
    error('adjust_grid returned an empty subfault selection.');
end

% Retain selected source-time functions.
substf = substfa(:, kf, end);

% Retain geometry and rigidity values consistently.
locadep     = locadep(kf, :);
locasub     = locasub(kf, :);
muSubfault  = muSubfault(kf);

% Retain the corresponding Green functions.
g = g(:, :, kf);

% Final slip distribution on the trimmed fault grid.
fSlip = sum(substf, 1) ./ 3e16 ./ prod(gridsize);
slip = reshape(fSlip, grid);

end