[Rd] Re: argument srt for mtext(); was: [R] using text on the x axis ticks rather than numbers

[Uwe Ligges]

Prof Brian Ripley wrote:

> On Wed, 8 Sep 2004, Prof Brian Ripley wrote:
> 
> 
>>On Wed, 8 Sep 2004, Uwe Ligges wrote:
> 
> 
> [...]
> 
> 
>>>Indeed, I think it is possible to provide an srt command (e.g. in half a 
>>>year for something like R-2.1.0). What is expected for "srt = 0"?
>>>a) the current behaviour, i.e. srt=0 in respect to the las setting *and* 
>>>the margin side to plot the text in, or
>>>b) always horizontally drawn text?
>>>
>>>I'd vote for b).
>>
>>That's easy, see the precedent in
>>
>>
>>>>BTW, if you want to use srt with mtext(at=) you can always use S ....
>>
>>S ignores las if at= is set, so srt=0 is the current default behaviour.
> 
> 
> Sorry, I garbled that.  In S, srt=0 is horizontal whatever side=, and las
> is always ignored.  Not that that is documented AFAICS, and it is hard to
> remember ....
> 
> [...]
> 

Since S is different for mtext() anyway:
We can say that adjustment is determined automatically by las + side, as 
it already is, and has to be adapted by the user if required.

Uwe