Running examples in ‘iplots-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: ivar
> ### Title: Data (ivar) manipulation functions
> ### Aliases: ivar ivar.data ivar.new ivar.new.map ivar.update
> ###   iset.updateVars [.ivar [<-.ivar length.ivar print.ivar
> ###   show,ivar-method
> ### Keywords: hplot
> 
> ### ** Examples
> 
> data(iris)
> s <- iset.new("iris", iris)
> rm(iris) # we don't need iris anymore
> s[1:5,]
  Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1          5.1         3.5          1.4         0.2  setosa
2          4.9         3.0          1.4         0.2  setosa
3          4.7         3.2          1.3         0.2  setosa
4          4.6         3.1          1.5         0.2  setosa
5          5.0         3.6          1.4         0.2  setosa
> s$Species
[1] "iVar{Species from iris}"
> s$Species[]
  [1] setosa     setosa     setosa     setosa     setosa     setosa    
  [7] setosa     setosa     setosa     setosa     setosa     setosa    
 [13] setosa     setosa     setosa     setosa     setosa     setosa    
 [19] setosa     setosa     setosa     setosa     setosa     setosa    
 [25] setosa     setosa     setosa     setosa     setosa     setosa    
 [31] setosa     setosa     setosa     setosa     setosa     setosa    
 [37] setosa     setosa     setosa     setosa     setosa     setosa    
 [43] setosa     setosa     setosa     setosa     setosa     setosa    
 [49] setosa     setosa     versicolor versicolor versicolor versicolor
 [55] versicolor versicolor versicolor versicolor versicolor versicolor
 [61] versicolor versicolor versicolor versicolor versicolor versicolor
 [67] versicolor versicolor versicolor versicolor versicolor versicolor
 [73] versicolor versicolor versicolor versicolor versicolor versicolor
 [79] versicolor versicolor versicolor versicolor versicolor versicolor
 [85] versicolor versicolor versicolor versicolor versicolor versicolor
 [91] versicolor versicolor versicolor versicolor versicolor versicolor
 [97] versicolor versicolor versicolor versicolor virginica  virginica 
[103] virginica  virginica  virginica  virginica  virginica  virginica 
[109] virginica  virginica  virginica  virginica  virginica  virginica 
[115] virginica  virginica  virginica  virginica  virginica  virginica 
[121] virginica  virginica  virginica  virginica  virginica  virginica 
[127] virginica  virginica  virginica  virginica  virginica  virginica 
[133] virginica  virginica  virginica  virginica  virginica  virginica 
[139] virginica  virginica  virginica  virginica  virginica  virginica 
[145] virginica  virginica  virginica  virginica  virginica  virginica 
Levels: setosa versicolor virginica
> s[1:5,c("Sepal.Width","Sepal.Length")]
  Sepal.Width Sepal.Length
1         3.5          5.1
2         3.0          4.9
3         3.2          4.7
4         3.1          4.6
5         3.6          5.0
> s$Test <- factor(c("yes","no")[runif(dim(s)[1])+1.5])
> s[1:5,]
  Sepal.Length Sepal.Width Petal.Length Petal.Width Species Test
1          5.1         3.5          1.4         0.2  setosa  yes
2          4.9         3.0          1.4         0.2  setosa  yes
3          4.7         3.2          1.3         0.2  setosa   no
4          4.6         3.1          1.5         0.2  setosa   no
5          5.0         3.6          1.4         0.2  setosa  yes
> iplot(s$Sepal.Length, s$Petal.Length)
Error in .jcall(.iplots.fw, "Lorg/rosuda/ibase/plots/ScatterCanvas;",  : 
  java.lang.NullPointerException
Calls: iplot ... .iplot.iPlot -> .iplot.new -> .jcall -> .jcheck -> .Call
Execution halted