How to check if a specific 'part' of a cell array exists?

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I am trying to write a script that will check if (as x increments)
burstcountdata{x}
exists, so that if it doesn't it can be created with
burstcountdata{x} = []
so it can then be referenced. The program has to be run repeatedly (because of how the data exists across multiple .mat files of the same name) so it cannot constantly be overwriting testarray{x} as [], it has to only write it if it doesnt exist.
Currently I have:
if exist(burstcountdata{x}, 'var') == 0
burstcountdata{x} = [];
end
but this makes matlab throw a fit because it's burstcountdata{x} instead of 'burstcountdata{x}', and I don't know how to make x be treated as a variable within 'burstcountdata{x}'

Accepted Answer

Walter Roberson
Walter Roberson on 14 Jul 2019
numel(burstcountdata) < x
Then the element doesn't exist

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