MATLAB: Finding a character in a string in an array of cells

cell arrayindexingstringsvariables

Is it possible to directly take an n_th character of an array, which is located in an array of cells? Example:

>> G = {'1010101', '0010101', '0010101'} % an array of cells with strings in each cells

Now, I would like to access the first string and get the first character (in my case a bit). Till now I would assig a value of the cell to a variable x and then look into the first character, e.g:

x = G{1};
x(1)

Which is kind of annoying. Is it possible to get the character value without reassigning it? Like in Mathematica with double brackets.

Best Answer

>>  G = {'1010101', '0010101', '0010101'};
>> G{1}(1)
ans =
1
>> 
doc cell % for details on addressing

NB: however,

G{:}(1)

does not work; cellfun comes to the rescue.

Related Solutions

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

MATLAB: How to convert strings in cell array into array

strcat() has the property that it trims out leading and trailing blanks from parameters that are character vectors. It does not do that for cell array of character vectors.

Similar question with accepted answer is available https://in.mathworks.com/matlabcentral/answers/470768-converting-strings-in-cell-array-into-array

For more details you can visit documentation of strcat here

Best Answer

Related Solutions

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

MATLAB: How to convert strings in cell array into array

Related Question