Effacer les filtres
Effacer les filtres

create a struct based on user id

4 vues (au cours des 30 derniers jours)
elisa ewin
elisa ewin le 30 Mai 2016
Commenté : Andrei Bobrov le 30 Mai 2016
Hi! I have a set of location records called LocationRecords = [usersID, years month, day, hour, minuts, seconds, latitude, longitude, regionID], attached. I want to create a struct of data in which I can put the date associated to every user id. E.g If I have
LocationRecords=[14 2009 3 17 16 14 2 0.528229037988558 -1.70585947774536 9247;14 2009 3 17 2 33 10 0.528288412470045 -1.70598280759199 9465;14 2009 3 17 2 32 24 0.528288412470045 -1.70598280759199 9313;62 2009 3 15 19 17 34 0.528256895934005 -1.70598404814585 9223;89 2009 3 15 17 41 20 0.528261141300802 -1.70596368432656 9250]
I will obtain a struct 1x3 in which put the data associated to user with id=14, id=62 and id=89, can you help me?
  2 commentaires
Stephen23
Stephen23 le 30 Mai 2016
Modifié(e) : Stephen23 le 30 Mai 2016
@elisa ewin: how do you want repeated IDs handled? Most of the IDs occur on multiple lines.
elisa ewin
elisa ewin le 30 Mai 2016
I want to repeated IDs in every row; example
struct<1,1>=[14 2009 3 17 16 14 2 0.528229037988558 -1.70585947774536 9247;14 2009 3 17 2 33 10 0.528288412470045 -1.70598280759199 9465;14 2009 3 17 2 32 24 0.528288412470045 -1.70598280759199 9313]
struct<1,2>=[62 2009 3 15 19 17 34 0.528256895934005 -1.70598404814585 9223]
struct<1,3>=[89 2009 3 15 17 41 20 0.528261141300802 -1.70596368432656 9250]

Connectez-vous pour commenter.

Réponse acceptée

Andrei Bobrov
Andrei Bobrov le 30 Mai 2016
Modifié(e) : Andrei Bobrov le 30 Mai 2016
[a,~,b] = unique(LocationRecords(:,1));
x = cellfun(@(x)sprintf('id_%d',x),num2cell(a),'un',0);
y = accumarray(b,(1:numel(b))',[],@(x){LocationRecords(x,2:end)});
C = cell2struct(y,x,1);
  2 commentaires
elisa ewin
elisa ewin le 30 Mai 2016
it run, but give an error in code row
C = cell2struct(y,x,1);
Error using cell2struct
Invalid field name "14"
Andrei Bobrov
Andrei Bobrov le 30 Mai 2016
Corrected

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Structures dans Help Center et File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by