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how to get adress position inside vector

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hi!
please for some help
i have this vector
i need to some value of eld in a vector gravlo just in right position given in vector adress
but matlab say Subscript indices must either be real positive integers or logicals.
can someone help me how to fix it
gravlo=zeros(1,100);
eld =[ 0
-1.7222
0
7.0000
0
-1.7778
0
6.8889
0
-1.7778
0
7.0000
0
-1.7222
0
7.1111];
adress =[ 0
3
0
2
0
1
31
32
61
62
63
64
65
66
33
34 ];
gravlo(adress)=gravlo(adress)+eld.*20;
  7 Comments
Jan
Jan on 12 Mar 2022
Edited: Jan on 12 Mar 2022
A simplified version of your code:
gravlo = zeros(427,1);
for iel=1:5
g = G(:,iel);
m = (g ~= 0);
gravlo(g(m)) = gravlo(g(m)) - eld(m) * 20;
end
Hints: Do not use "clear all" in productive code, because it is a waste of time only.
Use the buttons on top of the field for posting messages to format the code. This improves the readability.
alize beemiel
alize beemiel on 12 Mar 2022
oh !!!
thank you Sir,
its very nice and its work with a simply code
thanks very much Sir,

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Accepted Answer

Jan
Jan on 12 Mar 2022
Copied from my comment as an answer:
gravlo = zeros(427,1);
for iel = 1:5
g = G(:, iel);
m = (g ~= 0);
gravlo(g(m)) = gravlo(g(m)) - eld(m) * 20;
end

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