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

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: orclass
> ### Title: Subspace clustering based local classification using ORCLUS.
> ### Aliases: orclass orclass.default orclass.formula print.orclass
> ### Keywords: cluster classif multivariate
> 
> ### ** Examples
> 
> # definition of a function for parameterized data simulation
> sim.orclus <- function(k = 3, nk = 100, d = 10, l = 4, sd.cl = 0.05, sd.rest = 1, locshift = 1){
+   ### input parameters for data generation
+   # k           number of clusters
+   # nk          observations per cluster
+   # d           original dimension of the data
+   # l           subspace dimension where the clusters are concentrated
+   # sd.cl       (univariate) standard deviations for data generation (within cluster subspace concentration) 
+   # sd.rest     standard deviations in the remaining space 
+   # locshift    parameter of a uniform distribution to sample different cluster means  
+ 
+   x <- NULL
+   for(i in 1:k){
+   # cluster centers
+   apts <- locshift*matrix(runif(l*k), ncol = l)  
+   # sample points in original space
+   xi.original <- cbind(matrix(rnorm(nk * l, sd = sd.cl), ncol=l) + matrix(rep(apts[i,], nk), ncol = l, byrow = TRUE),
+                        matrix(rnorm(nk * (d-l), sd = sd.rest), ncol = (d-l)))  
+   # subspace generation
+   sym.mat <- matrix(nrow=d, ncol=d)
+   for(m in 1:d){
+     for(n in 1:m){
+       sym.mat[m,n] <- sym.mat[n,m] <- runif(1)  
+       }
+     } 
+   subspace <- eigen(sym.mat)$vectors    
+   # transformation
+   xi.transformed <- xi.original %*% subspace
+   x <- rbind(x, xi.transformed)
+   }  
+   clids <- rep(1:k, each = nk)
+   result <- list(x = x, cluster = clids)
+   return(result)
+   }
> 
> # simulate data of 2 classes where class 1 consists of 2 subclasses
> simdata <- sim.orclus(k = 3, nk = 200, d = 15, l = 4, sd.cl = 0.05, sd.rest = 1, locshift = 1)
> 
> x <- simdata$x
> y <- c(rep(1,400), rep(2,200))
> 
> res <- orclass(x, y, k = 3, l = 4, k0 = 15, a = 0.75)
iteration         : 1 
Initialization with 15 clusters 
Actual Subspace dimension : 15 
Error in nrow(dd) : object 'dd' not found
Calls: orclass ... by.data.frame -> structure -> eval -> eval -> tapply -> nrow
Execution halted