Changing the number of rows in a vector by adding repeated rows
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Alberto Acri
am 15 Feb. 2023
Beantwortet: Kevin Holly
am 15 Feb. 2023
I have a vector V [76x3 double] and I want to make it V1 [1022x3 double].
I want to get the vector V1 in the following way:
-> rows 1:76 are the rows of vector V
-> rows 77:1022 are the rows of vector V placed randomly
How can it be obtained?
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Dyuman Joshi
am 15 Feb. 2023
What do you mean by "missing rows"? Rows with zeros or nans? or otherwise? Please specify.
Do you want to add rows after the 76 rows or are some rows inbetween as well?
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Dyuman Joshi
am 15 Feb. 2023
Bearbeitet: Dyuman Joshi
am 15 Feb. 2023
%V1 is 76x3 double
%random data
V1 = rand(76,3);
s = size(V1,1);
n = 1022;
%randomly sorted row indices from 1 to 76 to append
idx = randi(s,n-s,1)
%appending rows according to the indices
V1(s+1:n,:) = V1(idx,:);
size(V1)
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Kevin Holly
am 15 Feb. 2023
V = rand(76,3);
V1 = zeros(1064,3);
V1(1:76,:) = V;
for ii=1:13
index = randperm(76);
V1(76*ii+1:76*ii+76,:)= V(index,:);
end
V1 = V1(1:1022,:)
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