Repeat matrix element of a given matrix
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my matrix is x=[2 5 3 6 1]
I want it to make it as y=[2 2 2 2 5 5 5 5 3 3 3 3 6 6 6 6 1 1 1 1]
which function does it?
1 个评论
Jan
2015-3-11
This topic is discussed such frequently, that I miss it in the FAQ.
采纳的回答
x = [2 5 3 6 1];
y = reshape(repmat(x, 4, 1), 1, []);
Or:
y = kron(x, ones(1, 4));
3 个评论
Nikhil Chourasia
2015-3-11
Nikhil Chourasia
2015-3-13
Guillaume
2015-3-13
That would be
x = y(1:4:end);
This is basic matrix indexing.
In the future, start a new question rather than asking in comments.
更多回答（3 个）
Another quick one-liner:
reshape(ones(4,1)*x,1,[])
Andrei Bobrov
2015-3-11
x = [2 5 3 6 1];
y = x(ceil((1:4*numel(x))/4));
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