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

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: complexity
> ### Title: Extract the complexity measures from datasets
> ### Aliases: complexity complexity.default complexity.formula
> 
> ### ** Examples
> 
> ## Extract all complexity measures for classification task
> data(iris)
> complexity(Species ~ ., iris)
 overlapping.F1.mean    overlapping.F1.sd overlapping.F1v.mean 
         0.277564193          0.261262259          0.026799630 
  overlapping.F1v.sd  overlapping.F2.mean    overlapping.F2.sd 
         0.033770417          0.006381766          0.011053544 
 overlapping.F3.mean    overlapping.F3.sd  overlapping.F4.mean 
         0.123333333          0.213619600          0.043333333 
   overlapping.F4.sd      neighborhood.N1 neighborhood.N2.mean 
         0.075055535          0.106666667          0.198144442 
  neighborhood.N2.sd neighborhood.N3.mean   neighborhood.N3.sd 
         0.146693341          0.060000000          0.238282445 
neighborhood.N4.mean   neighborhood.N4.sd neighborhood.T1.mean 
         0.013333333          0.115081918          0.055555556 
  neighborhood.T1.sd     neighborhood.LSC    linearity.L1.mean 
         0.090949961          0.816400000          0.004335693 
     linearity.L1.sd    linearity.L2.mean      linearity.L2.sd 
         0.007509640          0.013333333          0.023094011 
   linearity.L3.mean      linearity.L3.sd    dimensionality.T2 
         0.003333333          0.005773503          0.026666667 
   dimensionality.T3    dimensionality.T4           balance.C1 
         0.013333333          0.500000000          1.000000000 
          balance.C2      network.Density      network.ClsCoef 
         0.000000000          0.833288591          0.267977020 
   network.Hubs.mean      network.Hubs.sd 
         0.838050831          0.275331937 
> 
> ## Extract all complexity measures for regression task
> data(cars)
> complexity(speed ~ ., cars)
Error in get.knnx(train, test, k, algorithm) : 
  DLL requires the use of native symbols
Calls: complexity ... FUN -> eval -> eval -> r.S4 -> <Anonymous> -> get.knnx
Execution halted