[R] [FORGED] Re: about fitting a regression line

[Rolf Turner]

On 15/06/17 11:28, lily li wrote:
> Thanks. I thought lm() function is for linear model, such as the
> correlation below:
> Y= aX + b
> 
> On Wed, Jun 14, 2017 at 5:25 PM, MacQueen, Don <macqueen1 at llnl.gov> wrote:
> 
>> Start with the lm() function; i.e., see
>>
>>    ?lm


And you don't think that Y = a*cos(X) + b is a linear model?

The mind boggles.

Well, I guess there is a "subtlety" here.  Linear models are *linear in 
the PARAMETERS of the model*, not in the predictors.

First-year knuckle-draggers get confused about this.  People who are 
using R to do research should be a bit beyond such confusion.

cheers,

Rolf Turner

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