[R] Thinking about using two y-scales on your plot?

[Jim Lemon]

Johannes Hüsing wrote:
> Am 07.04.2008 um 12:24 schrieb Richard Cotton:
> 
>>thegeologician wrote:
>>
>>>Of course, these plots could be plotted separately with a common 
>>>x-axis,
>>>it's just a matter of saving space and of being used to that kind of
>>>graph. I can't imagine anyone being falsely lead to a thought like "oh
>>>gosh, the temperature is much higher/bigger/more than the
>>>precipitation!" - that makes no sense.
>>
>>I think in the temperature/ precipitation case, whether to draw 
>>multiple
>>y-axes or not is a fairly minor decision.  The reader would have to be
>>pretty dumb to assume that temperatures and precipitations can be 
>>compared.
>>
> 
> Au contraire, the diagrams are set up to allow this comparison. Google 
> for
> "Walter Lieth" for details.
> 
A rather neat way of displaying the relationship between the two 
measures, but I am somewhat bemused by the coexistence of "relative 
humid season" and "relative drought". I would have thought there was 
some temperature/precipitation function that specified one or the other.

Jim