Columnwise power operation in matrix

2013 3 25
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Hi everyone (first post here)!
Say I have a vector x = [1;2;3].
I would like to construct a matrix X, where every column is the vector x raised to the power of the column number:
1 1 1
X = 2 4 8
3 9 27
With a for-loop, this is easily done:
for i=1:3
X(:,i) = x.^i;
end
But could this be done with vector operation instead of using a for loop?

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Walter Roberson
Walter Roberson 2013-3-25

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bsxfun( @power, x, 1:3 )

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Alexander
Alexander 2013-3-25
Wow, thank's very much, I appreciate it!
Matt J
Matt J 2013-3-25
But don't use this for fitting polynomials! Use POLYFIT instead.

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