get the value which is an array from a dictionary in matlab

To get the value which is an array from a dictionary in Matlab, you can use the following code:

main.m
% create a dictionary with an array as value
my_dict = containers.Map({'key1', 'key2', 'key3'}, {[1 2 3], [4 5 6], [7 8 9]});
% get the value of 'key1'
my_array = my_dict('key1');
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In this example, we create a dictionary my_dict with three keys: key1, key2, and key3. The corresponding values are arrays [1 2 3], [4 5 6], and [7 8 9].

To get the value of key1, we access the dictionary using the key 'key1'. The returned value my_array is the array [1 2 3].

Note that this method only works if the key 'key1' exists in the dictionary. If the key does not exist, the code will throw an error. To avoid this, you can check if the key exists using the isKey() function:

main.m
% check if the key exists in the dictionary
if isKey(my_dict, 'key1')
    % get the value of 'key1'
    my_array = my_dict('key1');
else
    % handle the case when the key does not exist
    disp('Key not found')
end
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