[R] How to figure the type of a variable?

[Peng Yu]

Hi,

I want to know what is there returned values of 'lm'. 'class' and 'lm'
does not show that the returned value has the variable coefficients,
etc. I am wondering what is the command to show the detailed
information. If possible, I aslo want the lower level information. For
example, I want to show that 'coefficients' is a named list and it has
2 elements.

Regards,
Peng

> x=1:10
> y=1:10
> r=lm(x~y)
> class(r)
[1] "lm"
> mode(r)
[1] "list"
> r

Call:
lm(formula = x ~ y)

Coefficients:
(Intercept)            y
  1.123e-15    1.000e+00

> r$coefficients[1]
 (Intercept)
1.123467e-15
> r$coefficients[[1]]
[1] 1.123467e-15
> r$coefficients[2]
y
1
> r$coefficients[[2]]
[1] 1
>