MATLAB: Convert values to string

cell arraystrings

I have a vector with values to define groups (groupValue, in this case 1000×1 array with values from 1 to 5) I also have a cell array with strings for each of these values (labels, 5×1 cell array) I want to have a 1000×1 cell array with strings for the labels instead of values. How can I do this more efficiently i.e. without a for loop?

for kk = 1:nElements
    groupLabels{kk} = labels{groupValue(kk)};
end

Best Answer

Simply,

groupLabels = labels(groupValue);

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MATLAB: Counting the number of clusters

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idx = unique(data(:,1));
% clusters
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MATLAB: How to make function which gets as input arguments matrix of chars work

Kevin's Answer Is Correct Of Course,

But If that Was The Problem You Were Facing You Would Have Had A Different Error About Indexing Mismatch or SWITCH expression must be a scalar or a character vector.

I suspect you called the translation function with a character vector input, something like:

a = translation('GCUGAC')

the problem is that when you test the value at index m of that codons vector you get a single character 'G', 'C', 'U' or 'A' which is never equal to any of the sequences in your switch case.

what you need to do is send the codon sequence as a cell array of character vectors:

a = translation({'GCU' 'GAC'})

then you need to index that inside the loop with curly bracers like kevin said:

switch (codons{m})

and the output should also be a cell array proobably (like kevin suggested)

moreover, it's always a good idea to add a default value for output arguments, add

aminoacids = {};

just before the loop.

Best Answer

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MATLAB: Counting the number of clusters

MATLAB: How to make function which gets as input arguments matrix of chars work

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