extract from strring row symbol

There is a column vector A, which consists of strring rows. Need to extract symbol numbered j from row numbered i , . How do I solve this problem?

example :

A=["abcd"

“efgh”

“ijklm”],

Need to extract symbol numbered 3 from row numbered 3, i.e. symbol "k"

Answer 1

[Voss]

A=["abcd";"efgh";"ijklm"]

A = 3×1 string array
    "abcd"
    "efgh"
    "ijklm"

row_symbol_idx = [3 3];

symbol = extract(A(row_symbol_idx(1)),row_symbol_idx(2))

symbol = "k"

[roborrr]

Thank you for the answer, but the program gives me the following error: "Undefined function 'extract' for input arguments of type 'string'."

[Voss]

OK. Maybe your MATLAB version is older than extract().

You can try this, which will extract a single character:

A=["abcd";"efgh";"ijklm"];
row_symbol_idx = [3 3];

ch = char(A(row_symbol_idx(1)));
symbol = ch(row_symbol_idx(2))

symbol = 'k'

Or this, which is the same, but it converts that character to a string:

A=["abcd";"efgh";"ijklm"];
row_symbol_idx = [3 3];

ch = char(A(row_symbol_idx(1)));
symbol = string(ch(row_symbol_idx(2)))

symbol = "k"

[roborrr]

thank you so much , it was very helpful.

[Voss]

You're welcome!