Borrar filtros
Borrar filtros

Concatenate name fields in nested structure

2 visualizaciones (últimos 30 días)
Elzbieta
Elzbieta el 13 de Jun. de 2024
Comentada: Voss el 15 de Jun. de 2024
Hello,
I am trying to save value of the data placed in the last fields in nested structure by concatenating string in recursion. The name of the file should string composed of the all preceding fields in structure.
However I am not able to save previous fields.
The code is as follows:
nameDataBase = 'database.mat';
structNest = load([pathFolder, nameDataBase]);
structFields = myIsField(structNest, 'data');
pathOutputFile = pathFolder;
fileName = ''
function isFieldResult = myIsField (inStruct, fieldName)
% inStruct is the name of the structure or an array of structures to search
% fieldName is the name of the field for which the function searches
B = struct();
display('output folder')
isFieldResult = 0;
f = fieldnames(inStruct(1))
f1 = string(fieldnames(inStruct(1)))
for i=1:1%length(f)
display("i")
i
if(strcmp(f{i},strtrim(fieldName)))
isFieldResult = 1;
display('data found - end')
B.(f{i}) = inStruct(1).(f{i})
data = getfield(B,'data')
return;
elseif isstruct(inStruct(1).(f{i}))
isFieldResult = myIsField(inStruct(1).(f{i}), fieldName);
B.(f{i}) = inStruct(1).(f{i})
if isFieldResult
display('time found -loop')
return;
end
end
end
  1 comentario
Ganesh
Ganesh el 13 de Jun. de 2024
If you could upload the file 'database.mat' and describe what the output you would like to see is, it would be very helpful.

Iniciar sesión para comentar.

Respuesta aceptada

Voss
Voss el 13 de Jun. de 2024
S = struct( ...
'A1',1, ...
'A2',struct('B1',2,'not_data',3,'data',4), ...
'A3',struct( ...
'B1',struct('not_data',5), ...
'B2',struct( ...
'C1',struct('data',6), ...
'data',struct( ...
'D1',struct('data',7)))))
S = struct with fields:
A1: 1 A2: [1x1 struct] A3: [1x1 struct]
S.A2
ans = struct with fields:
B1: 2 not_data: 3 data: 4
S.A3
ans = struct with fields:
B1: [1x1 struct] B2: [1x1 struct]
S.A3.B1
ans = struct with fields:
not_data: 5
S.A3.B2
ans = struct with fields:
C1: [1x1 struct] data: [1x1 struct]
S.A3.B2.C1
ans = struct with fields:
data: 6
S.A3.B2.data
ans = struct with fields:
D1: [1x1 struct]
S.A3.B2.data.D1
ans = struct with fields:
data: 7
function [out,data] = get_full_field_names(S,name,str)
out = strings(0);
data = cell(0);
if nargin < 3
str = "";
end
f = fieldnames(S);
for ii = 1:numel(f)
if isstruct(S.(f{ii}))
[new_out,new_data] = get_full_field_names(S.(f{ii}),name,str+f{ii}+".");
out = [out, new_out];
data = [data, new_data];
elseif strcmp(f{ii},name)
out = [out, str+name];
data = [data, {S.(f{ii})}];
end
end
end
[names,data] = get_full_field_names(S,'data')
names = 1x3 string array
"A2.data" "A3.B2.C1.data" "A3.B2.data.D1.data"
data = 1x3 cell array
{[4]} {[6]} {[7]}
[names,data] = get_full_field_names(S,'not_data')
names = 1x2 string array
"A2.not_data" "A3.B1.not_data"
data = 1x2 cell array
{[3]} {[5]}
[names,data] = get_full_field_names(S,'something_else')
names = 0x0 empty string array data = 0x0 empty cell array
  5 comentarios
Elzbieta
Elzbieta el 15 de Jun. de 2024
Movida: Stephen23 el 15 de Jun. de 2024
Thank you for your comments. Voss your solution works great!
Voss
Voss el 15 de Jun. de 2024
You're welcome and thank you!

Iniciar sesión para comentar.

Más respuestas (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by