distributing two values in 3d array

Question

Girvani Manoharan 2019-3-11

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/449411-distributing-two-values-in-3d-array

编辑： KALYAN ACHARJYA 2019-3-12

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

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Answer 1

KALYAN ACHARJYA 2019-3-11

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https://ww2.mathworks.cn/matlabcentral/answers/449411-distributing-two-values-in-3d-array#answer_364803

编辑：KALYAN ACHARJYA 2019-3-11

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)

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Answer 2

Rik 2019-3-11

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/449411-distributing-two-values-in-3d-array#answer_364805

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