Matrix multiply with a function

i have two matrix with same columns and rows(matrix a and b). a is depth and b is land use index. each index value has a different equation and it is function of depth. i need to create a third matrix by substituting depth value to the functions.

depth d={2 3 4;7 2 5;1 2 5}

land use l={a b c;b c a;c b a}

a=0.5*depth+3

b=0.78*depth+4

c=0.1*depth+8

I really appreciate your cooperation. Thank you

[KALYAN ACHARJYA]

Sorry the question is not clear to me?

land use l={a b c;b c a;c b a}

Is this cell array with strings? Use??

[Indikatop]

It is a 3x3 matrix

[Adam]

Why is this flagged as Unclear? It has an accepted answer.

[Andrei Bobrov]

I'm fix :)

Answer 1

[Andrei Bobrov]

i = [1:3;2,3,1;3:-1:1];
k = [.5;.78;.1];
f = [3;4;8];
d=[2 3 4;7 2 5;1 2 5];

l = k(i).*d + f(i);

or

l = kron(k(i),d) + kron(ones(size(i)),f(i));

[Indikatop]

Thank you Mr. Andrei for your answer. if d and i in excel or txt format how you do that?

[Rik]

Then you need to load them as variables. I'm sure Google will be able to supply you with dozens if not hundreds of examples of how to read data from Excel to Matlab.

[Andrei Bobrov]

@Indikatop: Please attach your txt or xlsx file here and we show how it do.