[R] How to list R object properties & save workspace?

[Matej Kovacic]

Hi,

I am new to R and have a couple of questions.

I know how to list all objects (with ls()), but how to list all
properties of them?

For instance, I found function object.size(), but I would also like to
know whether one object is a dataset or just one vector (variable) or
even only one value, etc...

And another question - how to save workspace to a custom location while
running R? Is there any command for that?

Thanks,

Matej