‘what if we have a.*[1 -1 1 -1 -1] how can we get [a -a a -a -a]’
That requires a loop, but it works:
v = [1 -1 1 -1 -1];
a_vec = [];
for k1 = 1:length(v)
if v(k1) > 0
a_vec = [a_vec ' a '];
elseif v(k1) < 0
a_vec = [a_vec '-a '];
elseif v(k1 == 0)
a_vec = [a_vec ' 0 '];
end
end
a_vec =
a -a a -a -a
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