Create array positions as dynamic array in matlab

Question

I am so new with Matlab. I have one dimension array Table_cluster.I am working in wireless sensor networks. So my concept is that all nodes will send data to associated cluster head.Cluster head will aggregate them.

Suppose

There are 5 nodes which are associated with cluster head 11.And each node will send 256 bytes of data.So cluster head will get 5*256 bytes data.I need to aggregate it.

This will apply to all 100 nodes and their associated cluster heads.

Now suppose

node 1 is associated with cluster head 11.
node 2 with cluster head 12.
node 3 with cluster head 11.
node 4 with cluster head 11.
node 5 with cluster head 12.

What I need is to maintain array such as

 Table_cluster(11)={1,2....,3*256} %% 1,2,...,3*256 indicates position . Data can be any.
 Table_cluster(12)={1,2....,2*256}

I tried to find out that how can I convert position of array in another array which holds dynamic size.But I can not find it out.

So please help or suggest me any other way to achieve my concept.

Your examples are not quite clear to me. I understand that 1*256 means it's a position. "Data can be any" what does it mean? — ha9u63a7
– ha9u63a7, Commented Feb 25, 2015 at 11:48
Means 3*256 are the positions and those positions can contain any numeric data. — YLG
– YLG, Commented Feb 25, 2015 at 11:50
okay. So you want to create arrays which are of size 3*256, 1*256 etc.? From Table_cluster(11). Also, how are you getting the all the positions i mean where are you currently storing it? In an array or cell? — ha9u63a7
– ha9u63a7, Commented Feb 25, 2015 at 11:51
Yes.But not from Table_cluster(11),To Table_cluster(11). Because any clusterhead has any numbers of nodes and each node will send 256 bytes of data. So if cluster head is 11 and it has 3 nodes than It will get 3*256 bytes . So I need to that Table_cluster(11) will hold {1,2,3.... upto.....3*256}. — YLG
– YLG, Commented Feb 25, 2015 at 11:55
In my case I am using one loop such from 1 to 100 nodes. In that loop I am getting data in one array of 256 bytes. Then I have to send to cluster head.Which will aggregate data from all associated nodes. — YLG
– YLG, Commented Feb 25, 2015 at 11:57

ha9u63a7 · Accepted Answer · 2015-02-25 12:02:05Z

1

If I understood your problem correctly, you need to store arrays into another array. This means your Table_cluster is going to be a cell array.

Inside your table cluster, you can store a cell of 2D arrays. In your case, the 2D arrays are actually of size 1x256 2x256, etc. (if I understand right). This is where your Cluster heads are aggregating them. To do this, you need to read about MATLAB cell arrays and how to index them. As @Divakar pointed out in his comment, the cell array indexing is different than that of a 1-D or 2D array. You have {} braces to do the indexing.

answered Feb 25, 2015 at 12:02

ha9u63a7

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