how do I apply an if statement to each row of a column vector?

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Ben Newton
Ben Newton 2020-10-15
评论： Sudhakar Shinde 2020-10-16
i have a 1x10 column vector consisting of random numbers.
and i want to apply the following if statement to each number in the column vector.
if R < 0.5;
step = -1;
elseif R > 0.5;
step = 1;
end
where R is the column vector, and so the solution would be a 1x10 column vector consisting of either +1 or -1
any help is appreciatied, thanks.

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Sudhakar Shinde
Sudhakar Shinde 2020-10-15
编辑：Sudhakar Shinde 2020-10-15
Try this:
R = [0.1:0.1:1];
step=zeros(1,length(R(:)));
for n=1:length(R(:))
if R(n)<0.5
step(n)= -1;
elseif R(n) > 0.5
step(n) = 1;
end
end

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