[R] Deformulation and R

Jeff Newmiller jdnewmil at dcn.davis.CA.us
Sat Jan 19 20:58:41 CET 2013

Algebra 1?
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Sent from my phone. Please excuse my brevity.

Lorenzo Isella <lorenzo.isella at gmail.com> wrote:

>Dear All,
>I hope this is not too off-topic.
>Essentially, I need to know if there is any R package which can help me
>with a deformulation project.
>Suppose e.g. that you know from a chemical analysis the fat, mineral,  
>vitamin, energy [and so on] content of a certain food product.
>You also know the ingredients of this product (e.g. milk, lactose,  
>vegetable oil) and you know the chemical composition of each ingredient
>terms of fat, minerals, vitamins etc...
>At this point the question, assuming that the procedure to create the  
>product from the ingredients does not alter the chemical composition of
>any ingredient, is to determine the amount of each ingredient (milk,  
>lactose, vegetable oil) in the final product.
>Can anyone point me in the right direction?
>Many thanks
>R-help at r-project.org mailing list
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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