extract data from cell array

1 visualizzazione (ultimi 30 giorni)
John
John il 24 Gen 2022
Modificato: John il 25 Gen 2022
%Lets say I have a multi-element cell array with different variables/feilds within
c{1,1}.name = 'Tom'; c{1,1}.age = 48;
c{2,1}.name = 'Bob'; c{2,1}.age = 24;
c{3,1}.name = 'Jim'; c{3,1}.age = 12;
%I would like to create a vector, vec_age = [48 24 12]; from this data set
% without writing the loop
for i =1:length(c), vec_age(i) = c{i,1}.age; end
% Something nice would be similar to how you pull a vector from a matrix, v = m(:,3);
% in the form of vec_age = c{:,1}.age; ... but alas this does not work
% Thank you in advance for suggestion to a small problem that has been nagging me.

Risposta accettata

Walter Roberson
Walter Roberson il 24 Gen 2022
c{1,1}.name = 'Tom'; c{1,1}.age = 48;
c{2,1}.name = 'Bob'; c{2,1}.age = 24;
c{3,1}.name = 'Jim'; c{3,1}.age = 12;
vec_age = cellfun(@(S) S.age, c)
vec_age = 3×1
48 24 12
This does not assume that the structs all have the same fields in the same order, which Benjamin's answer assumes.
  1 Commento
John
John il 24 Gen 2022
Modificato: John il 25 Gen 2022
I oversimplified my case as I was trying to be concise. The data set I have is not of my making and the data types within are disparate. This solution works well. Thank you!

Accedi per commentare.

Più risposte (0)

Categorie

Scopri di più su Tables in Help Center e File Exchange

Prodotti


Release

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by