by/ NA/ barplot
On Wed, 4 Jul 2001, S.McClatchie wrote:
I have generated an object (class = by) with NA values and want to plot the output as a bargraph: x2 <- by(scl.nos, species, sum) These data are summed counts of fish by species
[...]
When I try to plot them I get an error due to the NA values, I think:
barplot(x2,
+ xlab='fish length (SL or TL) cm', + ylab='individuals per nm towed', col='black') Error in plot.window(xlim, ylim, log, asp, ...) : need finite ylim values Plot.table gives me the same error and I tried na.rm=TRUE to no effect. Is this simple to solve? I guess I need to replace the NAs with zeros in one of the by attributes?
barplot does not accept NAs. That's a bug, I believe. It will work if you
specify ylim, as in (modifying the first exammple)
tN <- table(Ni <- rpois(100, lambda=5))
tN[3] <- NA
r <- barplot(tN, col='gray')
Error in plot.window(xlim, ylim, log, asp, ...) :
need finite ylim values
r <- barplot(tN, col='gray', ylim=c(0,25)) # works.
I assume you want the bar omitted in the NA cases.
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 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._