[R] Help on comparing two matrices

Steve Lianoglou mailinglist.honeypot at gmail.com
Sat Aug 22 21:38:47 CEST 2009

On Sat, Aug 22, 2009 at 2:45 PM, Michael Kogan <michael.kogan at gmx.net> wrote:

>> 1. Sort the rows after the row sums (greater sums first).
>> 2. Sort the columns after the first column (columns with ones in the first row go left, columns with zeros go right).
>> 3. Save the left part (all columns with ones in the first row) and the right part in separate matrices.
>> 4. Repeat steps 2 and 3 with both of the created matrices (now taking the second row for sorting), repeat until all fragments consist of a single column.
>> 5. Compose the columns to a sorted matrix.

> If you want to go about this by implementing the algo you described, I think you'd be best suited via some divide-and-conquer/recursion route:

Starting from step 2, that is.

Steve Lianoglou
Graduate Student: Computational Systems Biology
| Memorial Sloan-Kettering Cancer Center
| Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact

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