LM() and time in R
Hi Livia,
From your description, it sounds like the "time" variable is actually
a vector of date strings like "30/04/2015". These will usually be input as "factors" in R, meaning that you probably had a very large number of categorical values instead of numeric. To find out, do this: is.factor(time_variable) where "time_variable" is something like mydata$Time. If the answer is TRUE, convert that variable to a vector of dates with as.Date and try your analysis again. Jim
On Thu, Apr 30, 2015 at 4:25 AM, Boris Steipe <boris.steipe at utoronto.ca> wrote:
Have a look at the help page for the function ts() (type ?ts at the R prompt). Other than that, you haven't provided nearly enough information for us to diagnose your issue. Please see here for some hints on how to ask questions productively: http://adv-r.had.co.nz/Reproducibility.html http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example Cheers B. On Apr 29, 2015, at 6:26 AM, Livia Maria Vestergaard <lvest09 at student.sdu.dk> wrote:
Hello, I need some help with a project that I?m working one. Im trying to make a l regression model (lm) in r with time as independant variable and gas prices as the depended. But It seems like everything im trying to run it, R freeze, I think that I need to tell R somehow that my time is time but how ? Hope that you can help me :) Livia
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