Yes you are right ... an example is mandatory.
So ... I have a matrix of 0 with just a single 1 per row and per column
I need to extract all maximal 'diagonal' submatrices
Let's say I have the following matrix
A B C D E
a 0 1 0 0 0
b 1 0 0 0 0
c 0 0 1 0 0
d 0 0 0 1 0
e 0 0 0 0 1
well I would like to get, for this example, the two following submatrices
A B C D E
a 0 1 c 1 0 0
b 1 0 d 0 1 0
e 0 0 1
Of course some of the extracted submatrices will have in some situations
dim=c(1,1) ...
Thanks in advance
Bruno
> Hi : I think you need to give an example because I don't understand
> below and my guess is that, since noone else replied,
> I don't think they understood it either. I don't mean to be rude. I've
> just noticed from being on the list
> That, if something is not clear, people won't even tell you. They just
> won't respond. The list is great
> But people don't want to spend time trying to figure out what you want.
> An example and possibly code is really
> helpful in getting responses.
>
>
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Bruno C.
> Sent: Thursday, July 26, 2007 4:47 AM
> To: R-help
> Subject: [R] Submatrices Extraction
>
> Hello,
> Given a submatrix containing 0 or 1
> I need to extract the indexes of all the diagonal submatrices so one of
> the two diagonals must contains only 1 for each submatrix ...
> Any help?
>
> Thanks in advance
> Bruno
>
>
> ------------------------------------------------------
> Scegli infostrada: ADSL gratis per tutta l'estate e telefoni senza
> canone Telecom
>
> ______________________________________________
> [email protected] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> --------------------------------------------------------
>
> This is not an offer (or solicitation of an offer) to buy/sell the
> securities/instruments mentioned or an official confirmation. Morgan Stanley
> may deal as principal in or own or act as market maker for
> securities/instruments mentioned or may advise the issuers. This is not
> research and is not from MS Research but it may refer to a research
> analyst/research report. Unless indicated, these views are the author's and
> may differ from those of Morgan Stanley research or others in the Firm. We
> do not represent this is accurate or complete and we may not update this.
> Past performance is not indicative of future returns. For additional
> information, research reports and important disclosures, contact me or see
> https://secure.ms.com/servlet/cls. You should not use e-mail to request,
> authorize or effect the purchase or sale of any security or instrument, to
> send transfer instructions, or to effect any other transactions. We cannot
> guarantee that any such requests received via e-mail will be processed in a
> timely manner. This communication is solely for the addressee(s) and may
> contain confidential information. We do not waive confidentiality by
> mistransmission. Contact me if you do not wish to receive these
> communications. In the UK, this communication is directed in the UK to those
> persons who are market counterparties or intermediate customers (as defined
> in the UK Financial Services Authority's rules).
>
------------------------------------------------------
Scegli infostrada: ADSL gratis per tutta lÂ’estate e telefoni senza canone
Telecom
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
