Message-ID: <19AACC79-8F4C-4E12-BB6D-3C601752F301@gmail.com>
Date: 2008-03-23T23:51:57Z
From: Charilaos Skiadas
Subject: (no subject)
In-Reply-To: <BAY128-W36BAD754D479BA71D2FEC9A3030@phx.gbl>
As you have not given us a reproducible example (namely we don't
really know what "test" is), there are likely better ways to do this
than what I am about to suggest, and you can find examples in the
relevant plot functions likely, but I think what you want can be
achieved using ifelse:
plot(test, col = ifelse(test[,1]<8 , "steelblue2" ,"wheat2") )
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College
On Mar 23, 2008, at 7:06 PM, Donna Tucker wrote:
>
> Is there any way to use more than one color or shape in the same
> plot. I would like to make the points different colors for various
> levels of a variable. I have tried a simple 'if' statement in the
> plot command, but I get an error message. Here is what I have
> tried and the error message I get: > plot(test, if(test[,1]<8)
> col="steelblue2" else col="wheat2")Error in xy.coords(x, y, xlabel,
> ylabel, log) : 'x' and 'y' lengths differIn addition: Warning
> message:In if (test[, 1] < 8) col = "steelblue2" else col =
> "wheat2" : the condition has length > 1 and only the first element
> will be usedI know 'x' and 'y' lenghths do NOT differ. If I just
> do plot(test), it works perfectly. Is there any way to this?
> Thanks,Donna