MATLAB: Remove cells that contain only two or one character

regexp

I have a variable that contain large cell arrays of strings but some of the cells contains strings that are meaningless such asç

xx = {'animal','a','aa','bc','dog','car','computer','screen','zx','tt','c','pen','ss'}

I would like to use regexp but I couldnt find appropriate expression to match two or single character.

Any sugguestion is highly appreciated.

Sami

Best Answer

len = length(xx)
cnt = 1;
for i = 1:len
    str = char(xx(cnt))
    if(length(str)==1 || length(str)==2)
        xx(cnt) = [];
        len = length(xx);
    else
        cnt= cnt+1;
    end
end

Related Solutions

MATLAB: How to Check if Element of Array Exists

Try length()

animals1 = ["dog", "cat", "fish"]
animals2 = ["horse", "bird", "dog", "cat", "snake"]
x = 5
if length(animals2) >= x
	% animals2 has at least x strings in it, so do something.
	if strcmpi(animals2(x), 'snake')
		% Do something.
		fprintf('animals2(%d) = "%s".\n', x, animals2(x));
	end
end

MATLAB: Does STRMATCH in MATLAB cause an error for a cell array containing a numeric value

In this example:

str = 9;
strs = strvcat('This is a string array','with two rows');
ind = strmatch(str,strs);

the normal STRMATCH is used, since the first input is not a cell array. In this case, 9 could be used as an ASCII value, and converted to a tab character. That character can then be compared with the other strings.

In this example:

str ={9};
strs = strvcat('This is a cell array of strings','with two rows');
ind = strmatch(str,strs);

@CELL/STRMATCH will be used, since the first input is a cell array. In this case, the code checks that the cell array contains strings, and converts it to a char array:

if iscellstr(str), str = char(str); end

Cell arrays of strings are special cases of cell arrays, which are commonly used to store strings together which have different lengths, and there are many instances where cell arrays of strings and strings can be used interchangeably. However, {9} is not a cell array of strings, so it is not converted to a character array, which leads to the error being thrown by this code:

if ~ischar(str) | ~ischar(strs)
    error('Requires character array or cell array of strings as inputs.')
end

Best Answer

Related Solutions

MATLAB: How to Check if Element of Array Exists

MATLAB: Does STRMATCH in MATLAB cause an error for a cell array containing a numeric value

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