[R] Compute z

[MacQueen, Don]

To which I will add:

Start up R.
At the prompt, type
  ?Control
This will show you the syntax for 'for' loops.

(is this homework?)

-Don

-- 
Don MacQueen

Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062





On 7/26/15, 8:19 AM, "R-help on behalf of Jeff Newmiller"
<r-help-bounces at r-project.org on behalf of jdnewmil at dcn.davis.ca.us> wrote:

>sum(v*w)
>
>There are no "column vectors" in R... there are vectors (that have no
>"direction"), and there are data frames that might only have one column,
>and matrices that might have many rows but only one column, and a piece
>of matrix or data frame is often converted to a vector when indexing is
>used to extract a column or row (e.g. mat[ , 1 ]).
>
>It may feel too dense to absorb at first, but the Introduction to R
>document that comes with R actually explains all this. Try (re)reading
>that occasionally until it sinks in.
>--------------------------------------------------------------------------
>-
>Jeff Newmiller                        The     .....       .....  Go
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>- 
>Sent from my phone. Please excuse my brevity.
>
>On July 26, 2015 1:38:24 AM PDT, admin.dslcomputer at gmail.com wrote:
>>Hi Everyone:
>>
>>
>>How do I correctly compute z?
>>
>>
>>
>>z = 0;
>>for i = 1:7
>>  z = z + v(i) * w(i)
>>end
>>
>>
>>If there are two column vectors v and w, each with 7 elements (i.e.,
>>they have dimensions 7x1).
>>
>>
>>Regards,
>>
>>Hal
>>
>>
>>
>>
>>
>>
>>Sent from Surface
>>	[[alternative HTML version deleted]]
>>
>>______________________________________________
>>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>>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.
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>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.