Convert character array to string in MATLAB

Question

I've a M by N matrix, each cell contains a character array, that is an image path. How can I use it to read image? It should be string.

It's what I try to do:

imread(fl(1,1));
??? Error using ==> imread>parse_inputs at 491
The filename or url argument must be a string.

Error in ==> imread at 336
[filename, fmt_s, extraArgs, msg] = parse_inputs(varargin{:});

And it's my matrix: enter image description here

Jacob · Accepted Answer · 2011-08-31 19:21:04Z

7

Replace fl(1,1) with fl{1,1}. You access the contents of a cell-array with {}. You access the cell element itself with ().

Since imread expects a string and not a cell element, it throws that error.

answered Aug 31, 2011 at 19:21

Jacob

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1 Comment

André Caron Over a year ago

There is no "cell element". For cell matrices, the () operator returns a (sub-)cell matrix. It just happens that when you pass in scalars (as opposed to vectors), the returned cell is of size 1-by-1.

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