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How do I add a loops output to an existing array as a new row?

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Elias Beaini
Elias Beaini 2018-2-7
关闭： MATLAB Answer Bot 2021-8-20
I have to write a for loop that loops through the columns of an array A and finds the distance of each column from the origin (where the entry in the first row is the x coordinate, the 2nd row is the y coordinate, and the third row is the z coordinate). I have that loop written. But I need to add the solutions of the loop to the Array A as a 4th row and I can't figure it out. Here's what I have so far:
B=[]; n=1:20;
for col=1: length(A(3,n))
dist=sqrt((A(1,n)).^2+(A(2,n)).^2+(A(3,n)).^2);
B=[A, dist];
end

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