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Re: Excluding elements of a matrix (Joseph Wakeling)
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From: |
Francesco Potorti` |
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Subject: |
Re: Excluding elements of a matrix (Joseph Wakeling) |
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Date: |
Mon, 25 Dec 2006 22:59:07 +0100 |
>> octave:2> A = magic(4)
>> A =
>>
>> 16 2 3 13
>> 5 11 10 8
>> 9 7 6 12
>> 4 14 15 1
>>
>> octave:3> A(1:end ~= 2,:)
>> ans =
>>
>> 16 2 3 13
>> 9 7 6 12
>> 4 14 15 1
>
>That's a nice way. Is there a comparable way of subtracting _several_
>elements?
Apparently, the already mentioned setdiff works in this case also:
octave:3> A(setdiff(1:end,[2 3]),:)
ans =
16 2 3 13
4 14 15 1
I'm admired.
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