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Can I create a matrix with unknown dimension ?

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piggy_jes
piggy_jes 2014-11-17
编辑： Adam 2014-11-17
Can Matlab allow me to create a matrix that has an unknown dimension ? In case that the amount of data is unknown.

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-11-17
If you want to pre-allocate just set your matrix to
A=zeros(n,m)
nxm is the biggest dimension you are expecting
Adam
Adam 2014-11-17
编辑：Adam 2014-11-17
Just working with a matrix in a normal way and using instructions that expand its size (ignoring the warnings you get) is the equivalent of creating a matrix of unknown size, but Azzi's solution above is usually preferable is you can put bounds on your "unexpectations"

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