[R] lines() and recycled colours

[michael watson (IAH-C)]

Hi

Lines behaves as the help() says it does:

plot(0:1,0:1,type="n")
lines(runif(11),runif(11),col=c("red","green"), type="h")

Mick

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Robin Hankin
Sent: 28 February 2006 09:31
To: RHelp
Subject: [R] lines() and recycled colours

Hi

?lines says


      For 'type = "h"', 'col' can be a vector and will be recycled as
      needed.


Why doesn't  lines() recycle colours for other types?

If I type


 > plot(0:1,0:1,type="n")
 > lines(runif(11),runif(11),col=c("red","green"))
 >


then all ten lines are red, with no warning given.  Is there a reason
why colour recycling would be a bad idea in this case?
  Also, it would be nice if arguments such as lwd were recycled if
needed too.




--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton European Way, Southampton SO14
3ZH, UK
  tel  023-8059-7743

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