How to delete n element from structure

6 Ansichten (letzte 30 Tage)
priyanka
priyanka am 8 Feb. 2015
Kommentiert: Stephen23 am 8 Feb. 2015
How an element can be deleted from a structure. Structure is having only one field.
  1 Kommentar
Erik S.
Erik S. am 8 Feb. 2015
Can you give an example of your structure and its field?

Melden Sie sich an, um zu kommentieren.

Melden Sie sich an, um diese Frage zu beantworten.

Akzeptierte Antwort

Image Analyst
Image Analyst am 8 Feb. 2015
% Make a structure with one field
% and an array in that field.
s.field1 = [1,2,3,4,5];
% Delete element 4 from the array in field1
s.field1(4) = []

Weitere Antworten (1)

Stephen23
Stephen23 am 8 Feb. 2015
The original question "How an element can be deleted from a structure" also makes sense in the context of a non-scalar struct. In MATLAB, removing any element/s of the struct can be performed in exactly the same way as removing the elemtns of any other kind of array (numeric, char, etc):
>> A = struct('dat',{1,2,3,4});
>> A(3) = [];
OR
>> A = A([1,2,4]); % <- may be faster.
  2 Kommentare
Image Analyst
Image Analyst am 8 Feb. 2015
That creates an array of 4 structures, with each structure in the array having one field with one scalar value assigned to that field. That was not what I thought of. I thought of one structure with one field and an array assigned to that field. Hopefully the original poster will clarify which form it is.
Stephen23
Stephen23 am 8 Feb. 2015
I have always thought of struct(1:n).(...) as being a "structure array" in and of itself, rather than being an array containing structures. Indeed this is what the documentation is subtitled " struct...Create structure array", and give syntax as " struct(field,value) creates a structure array...".

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Structures finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by