distributing two values in 3d array

I want to distribute two chosen values in 3d array. I have a below code I have created. How can I distribute only two values instead of rand() function? Much appreciate your guidance.

L=60; % Number of columns
b=25; % Number of rows
w=25; %the depth of the 3D lattice
K_f1=5e6; 
K_f2=2e6; 

b_centre=3;
b_sides=(b-b_centre)/2;
b_1=1:b_sides;
b_2=b_sides+1:b_sides+b_centre;
b_3=b_sides+b_centre+1:b;

A=zeros(L,b,w);

for r=1:L
    for q=1:b_sides
        for s=1:w
        A(r,q,s)=K_f1*rand; 
        end
    end
end
for r=1:L
    for q=b_sides+1:b_sides+b_centre
        for s=1:w
        A(r,q,s)=K_f2*rand;
        end
    end
end
for r=1:L
    for q=b_sides+b_centre+1:b
        for s=1:w
        A(r,q,s)=K_f1*rand;
        end
    end
end

Answer 1

[KALYAN ACHARJYA]

How can I distribute only two values instead of rand() function?

You can fixed the value as per your need

randi([1, 2],1)/10 ;

Please replace the value 1 or 2, as per your desired value

This expression pick any one value in between 0.1 or 0.2 (Either 0.1 or 0.2)

Answer 2

[Rik]

You could also do the following:

L=60; % Number of columns
b=25; % Number of rows
w=25; %the depth of the 3D lattice
K_f1=5e6; 
K_f2=2e6; 

list_of_values=[K_f1 K_f2];
ind=randi(numel(list_of_values),b,L,w);%generate indexing matrix
output=list_of_values(ind);%apply the random choices

This syntax allows you to expand beyond two values and will not require you to make assumptions about the characteristics of the filler values.

Answer 3

[Girvani Manoharan]

Many thanks Kalyan Acharja and Rik. Much appreciated.

+

[KALYAN ACHARJYA]

Welcome Always