How to replace letters with numbers in matrix

Hi, so I would like to replace A with 4, B with 3, C with 2, D with 1, and F with 0 in this matrix, here is the code that I have:

m = [D, 2, F, 1, C, 2, A, 3, B, 2, B, 1, C, 2, A, 1, C, 2, F, 2, D, 2, B, 3, C, 3, A, 2, F, 1, A, 2, F, 1, C, 1, F, 2, A, 1, A, 1, A, 3, F, 1, D, 1, B, 2, B, 1, B, 2, B, 2, D, 3, D, 1, F, 1, F, 3, D, 2, C, 2, D, 3, A, 1, A, 2]

str2num(replace(text, ["A", "B", "C", "D", "F"], ["4", "3", "2", "1", "0"]))

Unfortunately this didn't work, what else should I do?

[KSSV]

How is your m? What class it is?

[Sherman Ng]

m is supposed to be the matrix that I have.

Also I got this error:

Unrecognized function or variable 'D'.

Answer 1

[DGM]

Here's one way:

m = 'D2F1C2A3B2B1C2A1C2F2D2B3C3A2F1A2F1C1F2A1A1A3F1D1B2B1B2B2D3D1F1F3D2C2D3A1A2';
m2 = replace(m,{'A','B','C','D','F'},{'4','3','2','1','0'})

m2 = '12012243323122412202123323420142012102414143011132313232131101031222134142'

m2 = str2num(m2.').'

m2 = 1×74

1 2 0 1 2 2 4 3 3 2 3 1 2 2 4 1 2 2 0 2 1 2 3 3 2 3 4 2 0 1

Alternatively:

m = 'D2F1C2A3B2B1C2A1C2F2D2B3C3A2F1A2F1C1F2A1A1A3F1D1B2B1B2B2D3D1F1F3D2C2D3A1A2';

map = [1:9 4 3 2 1 0 0]; % note that E is missing
m2 = map(hex2dec(m.'))

m2 = 1×74

1 2 0 1 2 2 4 3 3 2 3 1 2 2 4 1 2 2 0 2 1 2 3 3 2 3 4 2 0 1

[Arif Hoq]

@DGM

how did you make this character vector m from this m ([D, 2, F, 1, C, 2, A, 3, B, 2, .........2, D, 3, A, 1, A, 2])?

[DGM]

m = 'D, 2, F, 1, C, 2, A, 3, B, 2, B, 1, C, 2, A, 1, C, 2, F, 2, D, 2, B, 3, C, 3, A, 2, F, 1, A, 2, F, 1, C, 1, F, 2, A, 1, A, 1, A, 3, F, 1, D, 1, B, 2, B, 1, B, 2, B, 2, D, 3, D, 1, F, 1, F, 3, D, 2, C, 2, D, 3, A, 1, A, 2';
m = strrep(m,', ','')

m = 'D2F1C2A3B2B1C2A1C2F2D2B3C3A2F1A2F1C1F2A1A1A3F1D1B2B1B2B2D3D1F1F3D2C2D3A1A2'