Delete empty field - rows in a structure
68 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
SS
el 25 de Jul. de 2019
Comentada: Hamza Imtiaz
el 21 de Sept. de 2020
I have a structure which has some empty field - rows. How can, I delete these empty them from the structure?
6 comentarios
Stephen23
el 25 de Jul. de 2019
"I want to delete the whole row from the structure"
Your structure only has one row (your screenshot shows that it has size 1x935).
Do not confuse the size of the structure itself with the sizes of its fields, as Guillaume already explained.
Guillaume
el 25 de Jul. de 2019
Yes, the structure has only one row and 935 columns and it's the columns you want deleted. When the structure array is a vector matlab displays it in a tabular format along the rows regardless of whether it's a row vector or a column vector.
You may want to consider using a table instead of a structure. This would be a lot easier for you to manipulate. I'll write that as an answer.
Respuesta aceptada
Adam
el 25 de Jul. de 2019
Added as an answer since it seemed to solve the problem.
Track_20( all( cell2mat( arrayfun( @(x) structfun( @isempty, x ), Track_20, 'UniformOutput', false ) ), 1 ) ) = [];
would work, I think, though it looks ghastly. I'm sure there is probably a simpler way!
0 comentarios
Más respuestas (2)
Andrei Bobrov
el 25 de Jul. de 2019
Editada: Andrei Bobrov
el 25 de Jul. de 2019
out = Track_20(all(~cellfun(@isempty,struct2cell(Track_20))));
2 comentarios
Guillaume
el 25 de Jul. de 2019
Editada: Guillaume
el 25 de Jul. de 2019
As commented, you may want to use a table instead of a structure. tables are a lot easier to use:
t_track20 = struct2table(track_20); %convert structure to table
%t_track20 = rmmissing(t_track20); %remove empty rows. All done!
edit: actually no, it's more complicated, as rmmissing doesn't work with cell arrays variables.:
toremove = rowfun(@(varargin) isempty([varargin{:}]), t_track20, 'ExtractCellContents', true);
t_track20(toremove, :) = [];
You may still want to use a table, generally it is easier to work with than structures. You can easily index table by row or by variables.
Ver también
Categorías
Más información sobre Logical en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!