Referring to multiple columns

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- 2015-9-10
编辑： - 2016-3-12
Hi,
mat =
7 8 9 10
12 10 8 6
How can I refer to the first two columns of the matrix above? Thanks in advance.

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Geoff Hayes
Geoff Hayes 2015-9-10
Ahmet - if mat is your matrix, then to get the first two colums (and all rows) you could do
mat(:,1:2)
which would give you
7 8
12 10
Note how the first colon indicates that we want all rows, and the 1:2 means that we want the columns one through two.

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