Re: [R] lines() and recycled colours

From: michael watson (IAH-C) <michael.watson_at_bbsrc.ac.uk>
Date: Tue 28 Feb 2006 - 20:37:46 EST


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@stat.math.ethz.ch
[mailto:r-help-bounces@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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Received on Tue Feb 28 20:56:23 2006

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