[R] Odp: Matrix to Vector

From: Petr PIKAL <petr.pikal_at_precheza.cz>
Date: Wed, 16 Jun 2010 09:41:06 +0200

Hi

r-help-bounces_at_r-project.org napsal dne 15.06.2010 19:51:39:

> Hi All,
>
> I am trying to turn a Matrix into a vector for analysis purposes. I
need to
> select only certain columns from the entire matrix for the vector
(intraday
> time intervals). Also I need to transpose the Matrix (so times are in
rows)
> stack each successive new column on top of each other (latest at the top
> creating one long vector vs a matrix) then reassign the date to the left
of
> each time (right now date is only shown once by row and will be in
columns
> when transposed). Any thoughts?

Perhaps read docs for matrix, vector, transpose, stack and maybe check Rintro docs for data manipulation?

Petr

>
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>
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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. Received on Wed 16 Jun 2010 - 07:44:49 GMT

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