Re: [R] tricky (for me) merging of data...more clarity

From: Grant Gillis <grant.j.gillis_at_gmail.com>
Date: Fri, 04 Mar 2011 11:20:04 +0000

For our animals we are comfortable with saying that body condition represents a roughly 30 day period, plus and minus 15 days from measurement. However, we have monitored individuals for longer periods and during those periods we do not wish there to be any values for body condition. There are other data associated with those days. For some analyses we will use data from the periods with body condition data and for others not.

Thanks very much for looking into this! An R solution would save tons of time and potential mistakes.

On 2 March 2011 09:40, Tal Galili <tal.galili_at_gmail.com> wrote:

> Question,
> How do you know that the following two rows should have NAs ?
>
> 1 16/02/87 NA NA
> 1 17/02/87 NA NA
>
>
> ----------------Contact
> Details:-------------------------------------------------------
> Contact me: Tal.Galili_at_gmail.com | 972-52-7275845
> Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
> www.r-statistics.com (English)
>
> ----------------------------------------------------------------------------------------------
>
>
>
>
> On Tue, Mar 1, 2011 at 11:06 AM, Grant Gillis <grant.j.gillis_at_gmail.com>wrote:
>
>> 1 16/02/87 NA NA
>> 1 17/02/87 NA NA
>>
>
>

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