create array and assign the values to proper locations

Question

Ali Tawfik 2020-6-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/540641-create-array-and-assign-the-values-to-proper-locations

编辑： madhan ravi 2020-6-2

I would like store each value and add them to the previous to create an array ...

expected result should be= [-8 0 0 0 0 0 0 8], however my output is [-8 0 0 0 0 0 0 0] seems the values does NOT store and change everytime ??

clear all; clc; 
t=16;
t_all=[8 0 0 0 0 0 0 8];
for i=1:8
    z_all=-t/2;  % I want have this number as the first element in the new array
    z_all(i)=z_all+t_all(i)
end 

z_all(1)=-t/2; z_all(2)=z_all(1)+t_all(1); z_all(3)=z_all(2)+t_all(2); z_all(4)=z_all(3)+t_all(3) and so on.. until

z_all(9)=z_all(8)+t_all(8)....

Hope anyone can help!!

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Ali Tawfik 2020-6-2

Actually, I am trying and I am kinda understand my loop not correct, but I do not know how to initialize the new vector with a specfic number then add to previous ?

hope you guide me

Ali Tawfik 2020-6-2

Also, I understand I have to learn more by trying. bymyself..So I posted the question asking not only for answer but for even suggestions, not just comments without any useful suggestions

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Answer 1

madhan ravi 2020-6-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/540641-create-array-and-assign-the-values-to-proper-locations#answer_445052

编辑：madhan ravi 2020-6-2

在 MATLAB Online 中打开

clear all; clc; 
t=16;
t_all=[8 0 0 0 0 0 0 8];
z_all = zeros(size(t_all)); % preallocate
z_all(1) = -t/2;
for ii = 2:8
    z_all(ii) = z_all(ii-1)+t_all(ii-1)
end 
z_all % I leave the rest for you to analyse the result