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

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 walter Mulvany Posts: 14 Registered: 10/19/13
Re: data extraction from matrix to use in another matrix
Posted: Oct 19, 2013 7:42 PM

My mistake, that matrix is wrong.
I tried what you suggested but I could not get it to work.
here is how the final matrix should look like.
Number of elements?
Elem # Node(a) Node(b)
1 1 2
2 2 3
3 3 4
4 4 7
5 3 7
6 3 6
7 6 2
8 5 2
9 1 5
10 5 6
11 6 7

Node # X Y
1 0 0
2 2 0
3 4 0
4 6 0
5 1 1
6 3 1
7 5 1

Final global matrix
Elem # Nodea Nodeb Nodeax Nodeay
1 1 2 0 0
2 2 3 2 0
3 3 4 4 0
4 4 7 6 0
5 3 7 4 0
6 3 6 4 0
7 6 2 3 1
8 5 2 1 1
9 1 5 0 0
10 5 6 1 1
11 6 7 3 1

each element has a node(a) and (b), each node(a) have a x and a y coordinate, but some elements repeat the same node (a). As I said, I'm very new at Matlab and don't have experience programming.
Can you show me how to type it correctly so that it works?
I'm thinking to use a statement like this to do the iterations.

for i= 1:nelem
nodeax(i)=
end

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