1 | %'mask_proj': restrict input fields to a mask region, set to 0 outside
|
---|
2 | %--------------------------------------------------------------------------
|
---|
3 | % function [ProjData,errormsg]=mask_proj(FieldData,MaskData)
|
---|
4 | %
|
---|
5 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
|
---|
6 | % Copyright 2008-2014, LEGI / CNRS UJF G-INP, Joel.Sommeria@legi.grenoble-inp.fr
|
---|
7 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
|
---|
8 | % This file is part of the toolbox UVMAT.
|
---|
9 | %
|
---|
10 | % UVMAT is free software; you can redistribute it and/or modify
|
---|
11 | % it under the terms of the GNU General Public License as published by
|
---|
12 | % the Free Software Foundation; either version 2 of the License, or
|
---|
13 | % (at your option) any later version.
|
---|
14 | %
|
---|
15 | % UVMAT is distributed in the hope that it will be useful,
|
---|
16 | % but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
17 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
18 | % GNU General Public License (file UVMAT/COPYING.txt) for more details.
|
---|
19 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
|
---|
20 |
|
---|
21 | function [ProjData,errormsg]=mask_proj(FieldData,MaskData)
|
---|
22 | errormsg='';%default
|
---|
23 | ProjData=FieldData;
|
---|
24 |
|
---|
25 |
|
---|
26 | %% group the variables (fields of 'FieldData') in cells of variables with the same dimensions
|
---|
27 | [CellInfo,NbDimArray,errormsg]=find_field_cells(FieldData);
|
---|
28 | if ~isempty(errormsg)
|
---|
29 | errormsg=['error in proj_field/proj_plane:' errormsg];
|
---|
30 | return
|
---|
31 | end
|
---|
32 | [Npy,Npx]=size(MaskData.A);
|
---|
33 |
|
---|
34 | for icell=1:numel(CellInfo)
|
---|
35 | if NbDimArray(icell)==2
|
---|
36 | if isfield(CellInfo{icell},'VarIndex_errorflag')
|
---|
37 | FFName=FieldData.ListVarName{CellInfo{icell}.VarIndex_errorflag};
|
---|
38 | check_new_error_flag=0;
|
---|
39 | else
|
---|
40 | FFName='FF';%default error (mask) flag name (if not already used)
|
---|
41 | if isfield(FieldData,'FF')
|
---|
42 | ind=1;
|
---|
43 | while isfield(FieldData,['FF_' num2str(ind)])
|
---|
44 | ind=ind+1;
|
---|
45 | end
|
---|
46 | FFName=['FF_' num2str(ind)];% append an index to the name of error flag, FF_1,FF_2...
|
---|
47 | end
|
---|
48 | ProjData.ListVarName=[FieldData.ListVarName {FFName}];
|
---|
49 | ProjData.VarAttribute{numel(ProjData.ListVarName)}.Role='errorflag';
|
---|
50 | check_new_error_flag=1;
|
---|
51 | end
|
---|
52 | switch CellInfo{icell}.CoordType;
|
---|
53 | case 'scattered'
|
---|
54 | XName=FieldData.ListVarName{CellInfo{icell}.Coord_x};
|
---|
55 | YName=FieldData.ListVarName{CellInfo{icell}.Coord_y};
|
---|
56 | DX=(MaskData.Coord_x(2)-MaskData.Coord_x(1))/(Npx-1);
|
---|
57 | DY=(MaskData.Coord_y(2)-MaskData.Coord_y(1))/(Npy-1);
|
---|
58 | mask_ind_i=round(0.5+(FieldData.(XName)-MaskData.Coord_x(1))/DX);%nbpoint terms
|
---|
59 | mask_ind_j=round(0.5+(FieldData.(YName)-MaskData.Coord_y(1))/DY);%nbpoint terms
|
---|
60 | checkin=mask_ind_j+Npy*(mask_ind_i-1);%array of mask indices for the nbpoints
|
---|
61 | checkin=checkin(mask_ind_i>=1 & mask_ind_i<=Npx & mask_ind_j>=1 & mask_ind_j<=Npy);%reduced array of mask indices (inside the image)
|
---|
62 | checkfalse=true(size(FieldData.(XName)));
|
---|
63 | MaskData.A=reshape(MaskData.A,1,[]);
|
---|
64 | checkfalse(MaskData.A(checkin)>200)=0;
|
---|
65 | for ivar=1:numel(CellInfo{icell}.VarIndex)
|
---|
66 | VarName=FieldData.ListVarName{CellInfo{icell}.VarIndex(ivar)};
|
---|
67 | ProjData.(VarName)(checkfalse)=0;
|
---|
68 | end
|
---|
69 | if check_new_error_flag% an error flag needs to be created in the current cell
|
---|
70 | ProjData.(FFName)=zeros(size(ProjData.(VarName)));
|
---|
71 | ProjData.VarDimName=[FieldData.VarDimName FieldData.VarDimName(CellInfo{icell}.VarIndex(1))];
|
---|
72 | end
|
---|
73 | ProjData.(FFName)(checkfalse)=1;% update the existing error flag
|
---|
74 | case 'grid'
|
---|
75 | XName=FieldData.ListVarName{CellInfo{icell}.CoordIndex(2)};
|
---|
76 | YName=FieldData.ListVarName{CellInfo{icell}.CoordIndex(1)};
|
---|
77 | Var1Name=FieldData.ListVarName{CellInfo{icell}.VarIndex(1)};
|
---|
78 | [Npy_field,Npx_field]=size(FieldData.(Var1Name));
|
---|
79 | XArray=linspace(FieldData.(XName)(1),FieldData.(XName)(end),Npx_field);
|
---|
80 | YArray=linspace(FieldData.(YName)(1),FieldData.(YName)(end),Npy_field);
|
---|
81 | XMask=linspace(MaskData.Coord_x(1),MaskData.Coord_x(end),Npx);
|
---|
82 | YMask=linspace(MaskData.Coord_y(1),MaskData.Coord_y(end),Npy);
|
---|
83 | [XMask,YMask]=meshgrid(XMask,YMask);
|
---|
84 | Mask = interp2(XMask,YMask,MaskData.A,XArray,YArray','nearest');
|
---|
85 | Mask=Mask>200;
|
---|
86 | for ivar=1:numel(CellInfo{icell}.VarIndex)
|
---|
87 | VarName=FieldData.ListVarName{CellInfo{icell}.VarIndex(ivar)};
|
---|
88 | if ~strcmp(VarName,FFName)
|
---|
89 | ProjData.(VarName)=FieldData.(VarName).*Mask;
|
---|
90 | end
|
---|
91 | end
|
---|
92 | if check_new_error_flag% an error flag needs to be created in the current cell
|
---|
93 | ProjData.(FFName)= ~Mask;
|
---|
94 | ProjData.VarDimName=[FieldData.VarDimName FieldData.VarDimName(CellInfo{icell}.VarIndex(1))];
|
---|
95 | else
|
---|
96 | ProjData.(FFName)=FieldData.(FFName) | ~Mask;
|
---|
97 | end
|
---|
98 | end
|
---|
99 | end
|
---|
100 | end
|
---|
101 |
|
---|
102 |
|
---|