dictionary - How do I use containers.Map in Matlab with a cell array as the keys and a vector of integers as the values -

i have cell array contains words 'a', 'b', , 'c' example. want able use matlab's containers.map make hash table can add values each key , able them quickly. able if not initialize containers.map object beforehand follows not allow me (or @ least haven't found way) add more key/value pairs later , makes have reinitialize object during each iteration of loop:

    key = {'a','b','c'};     newmap = containers.map(key,[1,2,3]); 

my problem need able continually add new keys hash table , therefore cannot keep initializing containers.map object each time, want 1 long hash table keys , values while in loop.

here code trying working, want able add keys containers.map object newmap , corresponding values @ same time. keys strings in cell array , values integers:

    key = {'a','b','c'};     val = [1,2,3];     newmap = containers.map(); % containers.map object initialization     newmap(key) = val; 

my desired output this:

    newmap(key)     ans = 1 2 3 

attempts @ solving this:

i have tried converting cell array of keys using cellstr() , char() haven't had luck these. seem keep getting error when trying this:

    error using containers.map/subsref     specified key type not match type expected container. 

thanks help.

% initialize map = containers.map('keytype','char','valuetype','double');  % assume these incrementally key = {'a','b','c'}; val = [1,2,3];  % add incrementally ii = 1:numel(key)     map(key{ii}) = val(ii); end 

you can retrieve values @ once given set of keys, cell array. no way around it, can convert cell2mat(), or retrieve incrementally loop map(key{ii})

% retrieve values(map,key)  ans =      [1]    [2]    [3]