overlay points on plot
Is v a data frame? In that case you need v[[2]] and v[[3]], as v[2] is a data frame.
On Wed, 18 Feb 2004, femke wrote:
Dear R-help list, I'm trying to overlay a number of data objects in a plot. Following an earlier example on the list I've created an empty plot as follows
xlim <- range(as.numeric(c("0","10000")))
ylim <- range(as.numeric(c("0","25")) )
plot(NA, xlim=xlim, ylim=ylim, xlab="distance", ylab="semivariance")
However when I try to plot something on it, I get the following error:
points(v[2],v[3])
Error in as.double.default(x) : (list) object cannot be coerced to double
A sample of my data looks like the following V[2]:
gamma
1 0.040000
2 0.582500
3 1.574545
4 7.126500
.....
and V[3]:
dist
1 470.0426
2 1045.6365
3 1607.1936
....
Does anyone have any idea how to fix this?
Thanks very much,
femke
[[alternative HTML version deleted]]
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595