[Rd] dump/source problem with hclust object (PR#4361)

[kleiweg at let.rug.nl]

    library(mva)
    data(USArrests)
    hc <- hclust(dist(USArrests), "ave")

    plot(hc)              # OK

    dump(c("hc"), "tst")
    rm(hc)
    source("tst")

    plot(hc)              # Error in plot.hclust(hc) : invalid dendrogram input


The same problem occurs with dput/dget




--please do not edit the information below--

Version:
 platform = i686-pc-linux-gnu
 arch = i686
 os = linux-gnu
 system = i686, linux-gnu
 status =
 major = 1
 minor = 7.1
 year = 2003
 month = 06
 day = 16
 language = R

Search Path:
 .GlobalEnv, package:methods, package:ctest, package:mva,
package:modreg, package:nls, package:ts, Autoloads, package:base