Line color based on data values?
FWIW Indeed! And IMHO such a nice example of the power and beauty of the R language. -- Bert -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Greg Snow Sent: Tuesday, November 25, 2008 10:00 AM To: Rory.WINSTON at rbs.com; r-help at r-project.org Subject: Re: [R] Line color based on data values? Try this: tmp <- with(iris, seq( min(Petal.Length)-1, max(Petal.Length)+1, length.out=6)) with( iris, plot( Sepal.Width, Sepal.Length, col=topo.colors(5)[ cut(Petal.Length,tmp) ] ) ) hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of Rory.WINSTON at rbs.com
Sent: Tuesday, November 25, 2008 10:35 AM
To: r-help at r-project.org
Subject: [R] Line color based on data values?
Hi all
Does anyone know if it is possible when plotting a line or scatter
plot, to selectively color the data points based on the data value?
i.e. if plotting say the percentage change in stock price movements, to
color +ve points in green and -ve points in red? And extending this to
a user-defined range of colors based on the quartile of the data
points?
Thanks
Rory
Rory Winston
RBS Global Banking & Markets
280 Bishopsgate, London, EC2M 4RB
Office: +44 20 7085 4476
***********************************************************************
************
The Royal Bank of Scotland plc. Registered in Scotland No 90312.
Registered Office: 36 St Andrew Square, Edinburgh EH2 2YB.
Authorised and regulated by the Financial Services Authority
This e-mail message is confidential and for use by
the=2...{{dropped:25}}
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting- guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.