How to convert an array to a one-line string?

At first I have two 3x3 arrays written in string form:

A = '[2, 3, 4; 5, 1, 8; 9, 1, 4]'
B = '[7, 5, 3; 5, 2, 3; 7, 1, 5]'

The first issue is to multiple these two matrices after converting them to numerical with str2num function. This part is clear and done. But after this operation, I need to convert the result matrix back to string (or char vector) and print it to a cell in app designer:

num2str(str2num(A) * str2num(B))

ans =

  3×10 char array

    '57  20  35'
    '96  35  58'
    '96  51  50'

The problem here is the result matrix has 3 rows, which leads to an error when printing it to a cell. MATLAB wants the variable to be a character vector (not a character array) when print in a cell. So I want this matrix to be transformed into the form that:

'57  20  35; 96  35  58; 96  51  50'

or

'57  20  35 96  35  58 96  51  50'

Thanks in advance.

Answer 1

[Geoff Hayes]

Ercument - you could try using rehape to convert your numeric matrix into a single row

C = str2num(A) * str2num(B);
D = num2str(reshape(C', 1, []))

which should create the string

'57  20  35 96  35  58 96  51  50'

[Ercument Kalkan]

I have tried it but it does not leave a space between rows when stacking them horizontally. I get:

'57  20  3596  35  5896  51  50'

[Geoff Hayes]

Please show your code. This example seems to work

>> A = [1 2 3; 4 5 6; 7 8 9];
>> X = num2str(reshape(A', 1, []))

[Ercument Kalkan]

Actually it's not an error. It is the behavior of code. It pastes the entire row at the end of the previous row without a whitespace. Thanks for help.