How to convert a cell array of structures to array of structures

19 visualizaciones (últimos 30 días)
ysz
ysz el 21 de Dic. de 2016
Comentada: ysz el 22 de Dic. de 2016
searchNode's nodeinfo is a cell array of structures.
nodeinfo = searchNode(neo4jconn, 'Comment')
nodeinfo.NodeData contains node data. It has a property key 'text'
>> nodeinfo.NodeData{1}.text
ans =
blahblah
Array of structures would be easier to work with and accesses can be vectorized
Please suggest a better than for loop:
s = size(nodeinfo.NodeData, 1);
for i = 1:s
comments(i).text = nodeinfo.NodeData{i}.text;
end
For example to collect text of all comments is now one-liner
text = [comments.text]
How can a cell array of structures be vectorized like that?

Respuesta aceptada

Guillaume
Guillaume el 21 de Dic. de 2016
As long as the structures in the cells have all the same fields and that these structures in the cells are either scalar or arrays with the same number of rows:
nodedata = [nodeinfo.NodeData{:}];
%or
nodedata = cell2mat(nodeinfo.NodeData);

Más respuestas (1)

Image Analyst
Image Analyst el 21 de Dic. de 2016
Will cell2struct() for for you?
  1 comentario
ysz
ysz el 21 de Dic. de 2016
Editada: ysz el 21 de Dic. de 2016
cell2struct(nodeinfo.NodeData, {'text'}, 2) will return s x1 struct array with field text
whereas for loop creates 1x s array of structures

Iniciar sesión para comentar.

Categorías

Más información sobre Data Type Conversion en Help Center y File Exchange.

Productos

Community Treasure Hunt

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

Start Hunting!

Translated by