Error in round(sw.fit, 2): non-numeric argument to mathematical function Traceback:

Asked Oct 27 '20 at 10:50

Active Oct 31 '20 at 16:15

Viewed 534 times

I know there are several answered questions regarding this error in R. However, I was not able to find one that could help me in my case.

What I am trying to do is fit a multiple linear model in it and rounding the output that I get into 2 decimal places. However, I get this error:

error message

This is what I have used to fit the model:

sw.fit <- step(lm.fit, k = log(nrow(train)), trace = 0, direction = 'both')

and this is what I used to round to 2 decimal places:

sw.fit<- round(sw.fit,2)

and this is the error I get:

Error in round(sw.fit, 2): non-numeric argument to mathematical function
Traceback:

Could you please help me figure out what I am doing wrong here?

I appreciate your help, thank you in advance!

edited Oct 31 '20 at 16:15

asked Oct 27 '20 at 10:50

Maisha Kroza

1

If you check `class(sw.fit)`, you'll se that it is not `numeric`, but `lm` (linear model). You must first extract the relevant coefficients you want to round before you `round()` – henrik_ibsen Oct 27 '20 at 11:02
1

If might be helpful to look at `coef` or `summary` of your result. – Oliver Oct 27 '20 at 14:45
`coef(sw.fit)` will give you the coefficient. – Abdessabour Mtk Oct 27 '20 at 14:53
Hi all, I finally managed to round it by doing: print(round(coeff, digits = 2)) – Maisha Kroza Oct 27 '20 at 14:59

0 Answers0