[R] Solver in R

[David Winsemius]

On Sep 10, 2010, at 5:44 PM, David Winsemius wrote:

>
> On Sep 10, 2010, at 5:35 PM, Chien-Pang Chin wrote:
>
>> Hi all:
>>
>>
>>
>> I'm looking for a package that similar to solver in MS. All I need  
>> is find a
>> r to satisfy R0=sum( , where t are from 1 to n and Xt are come from
>> another formula.
>>
>> The most package I found were to max or min the obj. function. Is  
>> there any
>> package can do it?
>
> If you minimize , you should get your answer.

Ooops, sorry. Make that:

abs( R0 - sum(r * Xt ) )  # or

( R0 - sum(r * Xt ) )^2


>
> -- 
> David.
>>
>> Thanks.
>>
>>     Peter
>
>
> David Winsemius, MD
> West Hartford, CT
>
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David Winsemius, MD
West Hartford, CT