[R] Warning message help

[Petr Pikal]

Hi



On 21 Nov 2005 at 10:44, Guenther, Cameron wrote:

Date sent:      	Mon, 21 Nov 2005 10:44:58 -0500
From:           	"Guenther, Cameron" <Cameron.Guenther at myfwc.com>
To:             	<R-help at r-project.org>
Subject:        	[R] Warning message help

> I am trying to great a new column of effort data from an existing
> vector of gears used. It is a simple code where 
> 
> effort[Gear==300]=(DIST_TOW*7412)
> effort[Gear==301]=(DIST_TOW*7412)
> 
> The code appears to work for some of the data but fails for others and
> inserts a NA value
> 
> I also get this warning message
> 
> Warning message:
> number of items to replace is not a multiple of replacement length 

basically it says

number of items to replace is not a multiple of replacement length

what means that length

effort[.....] is different from length DIST_TOW*7412 and

that the lengths are not divisible without a reminder so the 
replacement cannot be fully recycled.

HTH
Petr

> 
> Can anybody tell me what this means.
> thanks
> 
> Cameron Guenther 
> Associate Research Scientist
> FWC/FWRI, Marine Fisheries Research
> 100 8th Avenue S.E.
> St. Petersburg, FL 33701
> (727)896-8626 Ext. 4305
> cameron.guenther at myfwc.com
> 
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Petr Pikal
petr.pikal at precheza.cz