Dictionaries of Hashtables in MATLAB?

34 visualizzazioni (ultimi 30 giorni)
Philip
Philip il 13 Nov 2011
Risposto: Mike Croucher il 15 Set 2022
Hi all,
Is there a way to create a hash table or dictionary in MATLAB such that I can retrieve a set of values based on a key?
I also need to append more entries to the end of the list, given a key. I tried importing a hashtable from java.util.Hashtable, but the "add" method overwrites the current entries if a key already exists...
Thanks for all your help!

Risposta accettata

Walter Roberson
Walter Roberson il 13 Nov 2011
Modificato: John Kelly il 26 Feb 2015
  3 Commenti
Philip
Philip il 14 Nov 2011
(I need to collect the keys and values inside a loop, so I don't know them beforehand - this means unfortunately I cannot enter all the data at once.)
Philip
Philip il 14 Nov 2011
To answer my own question there, it seems the solution for adding values without overwriting the previous entries is:
mapName('key_string') = [mapName('key_string') [1 2 3]];
Thanks for your suggestion. I think this will work!

Accedi per commentare.

Più risposte (1)

Mike Croucher
Mike Croucher il 15 Set 2022
Reviving this thread in 2022 because R2022b contains a new dictionary data type. A tutorial-like introduction at An introduction to dictionaries (associative arrays) in MATLAB » The MATLAB Blog - MATLAB & Simulink (mathworks.com)

Categorie

Scopri di più su Dictionaries in Help Center e File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by