[8] | 1 | %'find_file_indices': test field structure for input in proj_field and plot_field |
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| 2 | %group the variables into 'fields' with common dimensions |
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| 3 | %---------------------------------------------------------------------- |
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| 4 | % function [DimVarIndex,CellVarIndex,NbDim,VarType]=find_field_indices(Data) |
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| 5 | % |
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| 6 | %OUTPUT: |
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| 7 | % CellVaxIndex: cell whose elements are arrays of indices in the list data.ListVarName |
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| 8 | % CellvarIndex{i} represents a set of variables with the same dimensions |
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| 9 | % NbDim: array with the length of CellVarIndex, giving its space dimension |
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| 10 | % VarType: cell array of structures with fields |
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| 11 | % .coord_x, y, z: indices (in .ListVarname) of variables representing unstructured coordinates x, y, z |
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| 12 | % .vector_x,_y,_z: indices of variables giving the vector components x, y, z |
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| 13 | % .warnflag: index of warnflag |
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| 14 | % .errorflag: index of error flag |
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| 15 | % .ancillary: indices of ancillary variables |
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| 16 | % .image : B/W image, (behaves like scalar) |
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| 17 | % .color : color image, the last index, which is not a coordinate variable, represent the 3 color components rgb |
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| 18 | % .discrete: like scalar, but set of data points without continuity, represented as dots in a usual plot, instead of continuous lines otherwise |
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| 19 | % .scalar: scalar field (default) |
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| 20 | |
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| 21 | % |
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| 22 | %INPUT: |
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| 23 | % Data: structure representing fields, output of check_field_structure |
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| 24 | % .ListDimName: cell listing the names of the array dimensions |
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| 25 | % .ListVarName: cell listing the names of the variables |
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| 26 | % .VarDimIndex: cell containing the set of dimension indices (in list .ListDimName) for each variable of .ListVarName |
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| 27 | % |
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| 28 | % HELP: |
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| 29 | % to get the dimensions of arrays common to the field #icell |
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| 30 | % VarIndex=CellVarIndex{icell}; % list of variable indices |
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| 31 | % DimIndex=Data.VarDimIndex{VarIndex(1)} % list of dimensions for each variable in the cell #icell |
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| 32 | % |
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| 33 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
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| 34 | % Copyright Joel Sommeria, 2008, LEGI / CNRS-UJF-INPG, sommeria@coriolis-legi.org. |
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| 35 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
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| 36 | % This file is part of the toolbox UVMAT. |
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| 37 | % |
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| 38 | % UVMAT is free software; you can redistribute it and/or modify |
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| 39 | % it under the terms of the GNU General Public License as published by |
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| 40 | % the Free Software Foundation; either version 2 of the License, or |
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| 41 | % (at your option) any later version. |
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| 42 | % |
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| 43 | % UVMAT is distributed in the hope that it will be useful, |
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| 44 | % but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 45 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 46 | % GNU General Public License (file UVMAT/COPYING.txt) for more details. |
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| 47 | %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
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| 48 | |
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| 49 | function [CellVarIndex,NbDim,VarType,errormsg]=find_field_indices(Data) |
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| 50 | CellVarIndex={}; |
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| 51 | NbDim=[]; |
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| 52 | VarType=[]; |
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| 53 | errormsg=[]; |
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| 54 | nbvar=numel(Data.ListVarName);%number of field variables |
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| 55 | icell=0; |
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| 56 | ivardim=0; |
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| 57 | VarDimIndex=[]; |
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| 58 | VarDimName={}; |
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| 59 | |
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| 60 | if ~isfield(Data,'VarDimName') |
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| 61 | errormsg='missing .VarDimName'; |
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| 62 | return |
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| 63 | end |
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| 64 | |
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| 65 | %loop on the list of variables |
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| 66 | for ivar=1:nbvar |
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| 67 | DimCell=Data.VarDimName{ivar}; %dimensions associated with the variable #ivar |
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| 68 | if ischar(DimCell) |
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| 69 | DimCell={DimCell}; |
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| 70 | Data.VarDimName{ivar}={Data.VarDimName{ivar}};%transform char chain into cell |
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| 71 | end |
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| 72 | testnewcell=1; |
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| 73 | for icell_prev=1:numel(CellVarIndex)%detect whether the dimensions of ivar fit with an existing cell |
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| 74 | PrevVarIndex=CellVarIndex{icell_prev}; |
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| 75 | PrevDimName=Data.VarDimName{PrevVarIndex(1)}; |
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| 76 | if isequal(PrevDimName,DimCell) |
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| 77 | CellVarIndex{icell_prev}=[CellVarIndex{icell_prev} ivar];% add variable index #ivar to the cell #icell_prev |
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| 78 | testnewcell=0; %existing cell detected |
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| 79 | break |
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| 80 | end |
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| 81 | end |
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| 82 | if testnewcell |
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| 83 | icell=icell+1; |
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| 84 | CellVarIndex{icell}=ivar;%put the current variabl index in the new cell |
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| 85 | end |
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| 86 | |
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| 87 | %look for dimension variables |
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| 88 | if numel(DimCell)==1% if the variable has a single dimension |
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| 89 | Role=''; |
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| 90 | if isfield(Data,'VarAttribute') && length(Data.VarAttribute)>=ivar && isfield(Data.VarAttribute{ivar},'Role') |
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| 91 | Role=Data.VarAttribute{ivar}.Role; |
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| 92 | end |
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| 93 | if strcmp(DimCell{1},Data.ListVarName{ivar}) || strcmp(Role,'dimvar') |
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| 94 | ivardim=ivardim+1; |
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| 95 | VarDimIndex(ivardim)=ivar;%index of the variable |
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| 96 | VarDimName{ivardim}=DimCell{1};%name of the dimension |
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| 97 | end |
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| 98 | end |
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| 99 | end |
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| 100 | |
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| 101 | % find the spatial dimensions and vector components |
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| 102 | ListRole={'coord_x','coord_y','coord_z','vector_x','vector_y','vector_z','warnflag','errorflag',... |
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| 103 | 'ancillary','image','color','discrete','scalar'}; |
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| 104 | for icell=1:length(CellVarIndex) |
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| 105 | for ilist=1:numel(ListRole) |
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| 106 | eval(['ivar_' ListRole{ilist} '=[];']) |
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| 107 | end |
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| 108 | VarIndex=CellVarIndex{icell};%set of variable indices with the same dim |
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| 109 | DimCell=Data.VarDimName{VarIndex(1)};% list of dimensions for each variable in the cell #icell |
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| 110 | if isfield(Data,'VarAttribute'); |
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| 111 | VarAttribute=Data.VarAttribute; |
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| 112 | else |
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| 113 | VarAttribute={}; |
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| 114 | end |
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| 115 | test_2D=0; |
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| 116 | for ivar=VarIndex |
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| 117 | if length(VarAttribute)>=ivar |
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| 118 | if isfield(VarAttribute{ivar},'Role') |
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| 119 | role=VarAttribute{ivar}.Role; |
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| 120 | switch role |
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| 121 | case ListRole |
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| 122 | eval(['ivar_' role '=[ivar_' role ' ivar];']) |
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| 123 | otherwise |
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| 124 | ivar_scalar=[ivar_scalar ivar];%variables are consiered as 'scalar' by default (in the absence of attribute 'Role') |
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| 125 | end |
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| 126 | else |
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| 127 | ivar_scalar=[ivar_scalar ivar];% variable considered as scalar in the absence of Role attribute |
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| 128 | end |
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| 129 | if isfield(VarAttribute{ivar},'Coord_2') |
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| 130 | test_2D=1; %obsolete convention |
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| 131 | end |
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| 132 | else |
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| 133 | ivar_scalar=[ivar_scalar ivar];%variables are consiered as 'scalar' by default (in the absence of attribute 'Role') |
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| 134 | end |
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| 135 | end |
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| 136 | for ilist=1:numel(ListRole) |
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| 137 | eval(['VarType{icell}.' ListRole{ilist} '=ivar_' ListRole{ilist} ';']) |
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| 138 | end |
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| 139 | if numel(ivar_coord_x)>1 || numel(ivar_coord_y)>1 || numel(ivar_coord_z)>1 |
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| 140 | errormsg='multiply defined coordinates in the same cell'; |
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| 141 | return |
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| 142 | end |
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| 143 | if numel(ivar_vector_x)>1 || numel(ivar_vector_y)>1 || numel(ivar_vector_z)>1 |
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| 144 | errormsg='multiply defined vector components in the same cell'; |
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| 145 | return |
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| 146 | end |
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| 147 | if numel(ivar_errorflag)>1 |
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| 148 | errormsg='multiply defined error flag in the same cell'; |
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| 149 | return |
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| 150 | end |
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| 151 | if numel(ivar_warnflag)>1 |
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| 152 | errormsg='multiply defined warning flag in the same cell'; |
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| 153 | return |
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| 154 | end |
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| 155 | NbDim(icell)=0;% nbre of space dimensions |
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| 156 | if ~isempty(ivar_coord_z) |
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| 157 | NbDim(icell)=3; |
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| 158 | elseif ~isempty(ivar_coord_y) |
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| 159 | NbDim(icell)=2; |
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| 160 | elseif ~isempty(ivar_coord_x) |
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| 161 | NbDim(icell)=1; |
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| 162 | end |
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| 163 | |
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| 164 | % look at coordinates variables |
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| 165 | coord=zeros(1,numel(DimCell));%default |
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| 166 | if NbDim(icell)==0 && ~isempty(VarDimName)% no unstructured coordinate found |
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| 167 | for idim=1:numel(DimCell) %loop on the dimensions of the variables in cell #icell |
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| 168 | for ivardim=1:numel(VarDimName) |
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| 169 | if strcmp(VarDimName{ivardim},DimCell{idim}) |
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| 170 | coord(idim)=VarDimIndex(ivardim); |
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| 171 | break |
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| 172 | end |
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| 173 | end |
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| 174 | end |
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| 175 | NbDim(icell)=numel(find(coord)); |
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| 176 | end |
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| 177 | VarType{icell}.coord=coord; |
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| 178 | if NbDim(icell)==0 && test_2D %look at attributes Coord_1, coord_2 (obsolete convention) |
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| 179 | NbDim(icell)=2; |
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| 180 | end |
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| 181 | end |
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