Partitioning 1-D list into 2-D Matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg29758] Partitioning 1-D list into 2-D Matrix
- From: "Krautschik, Chris G" <krautschikc at intel.co.jp>
- Date: Sat, 7 Jul 2001 02:26:02 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I have a question of how to best select elements from a list and reformat
the list into a 2D matrix. Here is an example:
b=Range[1,20]
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
I would like to arrange the list into a 2D array of the following form:
{{1, 3, 5, 7, 9}, {2, 4, 6, 8, 10}, {11, 13, 15, 17, 19}, {12, 14, 16, 18,
20}}
Then
bb=Partition[Partition[b,2],5]
<<...OLE_Obj...>>
almost does what I want if you view this array in MatrixForm[]. However, I
would have to somehow get rid of the innner brackets. I am not sure how to
do that with Flatten[].
I could use brute force and select the elements as follows:
<<...OLE_Obj...>>
<<...OLE_Obj...>>
I have a feeling there is a much better way to do this.
Thanks in advance,
Chris