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Topic: data extraction from matrix to use in another matrix
Replies: 26   Last Post: Oct 22, 2013 4:57 PM

 Messages: [ Previous | Next ]
 dpb Posts: 9,850 Registered: 6/7/07
Re: data extraction from matrix to use in another matrix
Posted: Oct 21, 2013 12:28 PM

On 10/21/2013 8:34 AM, dpb wrote:
> On 10/21/2013 6:45 AM, walter Mulvany wrote:
>> Elem # Nodea Nodeb Nodeax Nodeay
>> 1 4 2 6 0
>> 2 2 3 2 0
>> 3 3 4 4 0
>> 4 4 7 6 0
>> 5 3 7 4 0
>>
>> You are right, element 1 should be (6 0), not (0 0), that was a typo,
>> all the others are correct.

>
> So, it was correct as written...
>

> >> for i=1:length(conn),M(i,:)=[conn(i,:) Node(conn(i,1),:)];end
> >> M

> M =
> 4 2 6 0
> 2 3 2 0
> 3 4 4 0
> 4 7 6 0
> 3 7 4 0

...

Note, however, if you are looking for the is the location for which the
node is the _value_, the general idea still works but you need another
level of indirection to return the index of the location of a given
value...consider

M(i,:)=[conn(i,:) Node(find(Node(:,1)==conn(i,1)),:)];

and "salt to suit". I'm still not sure which it is you're trying to
build actually...but the former above reproduces the sample output; I'm
just not positive that's the output you need for the purpose.

--

Date Subject Author
10/19/13 walter Mulvany
10/19/13 dpb
10/19/13 walter Mulvany
10/19/13 dpb
10/19/13 walter Mulvany
10/20/13 dpb
10/20/13 walter Mulvany
10/20/13 dpb
10/20/13 walter Mulvany
10/21/13 walter Mulvany
10/21/13 dpb
10/21/13 dpb
10/21/13 walter Mulvany
10/21/13 dpb
10/21/13 walter Mulvany
10/22/13 walter Mulvany
10/22/13 dpb
10/22/13 walter Mulvany
10/22/13 walter Mulvany
10/22/13 dpb
10/22/13 walter Mulvany
10/22/13 dpb
10/22/13 dpb
10/22/13 walter Mulvany
10/22/13 dpb
10/22/13 dpb
10/20/13 dpb