[R] ggplot questions

hadley wickham h.wickham at gmail.com
Thu Jun 5 19:09:00 CEST 2008

On Wed, Jun 4, 2008 at 2:03 PM, Thompson, David (MNR)
<David.John.Thompson at ontario.ca> wrote:
> Hello,
> A few questions about the following examples:
> 1. Why do the two plotting versions not produce the same result?

Because version one has two layers, and version two has one?

> 2. Is the 'scale_x_continuous' (or *_y_* or *_*_discrete) geom the best
> way to setup grids (as in visual guide-lines) in polar (or for that
> matter, any) coordinate system?

It's one way.  Another way is to use geom_hline and geom_vline.  (Also
note that scale_x_continuous is a _scale_ not a geom)

> 3. Why do these commands appear to generate 3 plot pages each?

Could you provide a bit more detail here please?




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