MATLAB: How can i create array of all -1 numbers in it

arrays

Item one
Item two

Best Answer

X = repmat(-1, [3, 4])

Related Solutions

MATLAB: Flipping the numbers 1 to -1

Try using a while loop:

a = ones(1,4)
k=1;
mag=[];
while k<=numel(a)
    x = rand()>=0.5;
    a(k)=a(k)-2*x;
    mag(end+1)=sum(a);
    k=k+x;
end

Produces:

a =
  -1  -1  -1  -1
mag =
   4   4   2   2   2   0  -2  -4

MATLAB: Sum Matrix excluding certain values

y = sum(MatrixA(MatrixA > 3))

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