create special matrix without use from for loop

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xosro
xosro 2015-5-24
回答： Walter Roberson 2015-5-24
i wish create several matrix with out uses from for loop
for example
j=1;
for i=2:2:(2*T)
a=zeros(1,2*T);
a(i-1)=1; a(i)=-1;
one(j,:)=a;
j=j+1;
end
that every time T Replaced different number

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采纳的回答

Walter Roberson
Walter Roberson 2015-5-24
For any given T,
a = zeros(T,2*T);
a(1:2*T+1:end) = 1;
a(T+1:2*T+1:end) = -1;

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