[R] lm and time series.

[stephen sefick]

what do you want to do?

On Fri, Sep 5, 2008 at 3:22 PM,  <rkevinburton at charter.net> wrote:
> I am sorry but I looked at ?lm and could not see any guidance on writting a formula. If I have two arrays or a data set then I know how to do that (y ~ x) but for a time series I am not sure how to write y or x.
>
> Thank you.
>
> Kevin
>
> ---- Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
>> The Time Series section in ?lm should be self explanatory.   If you are using
>> diff's and lag's then look at the dyn package.
>>
>> On Fri, Sep 5, 2008 at 12:25 PM,  <rkevinburton at charter.net> wrote:
>> > I did a ?lm and it said basically to be careful when using lm and a time series. But my question is probably more to do with my inexperience that anything. If I have a time series object 'ti' how do I write the formula? The response is the value at any particular time and the time is basically the index of the time series. But I don't know how to put that into a formula.
>> >
>> > Thank you.
>> >
>> > Kevin
>
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-- 
Stephen Sefick
Research Scientist
Southeastern Natural Sciences Academy

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

	-K. Mullis