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

> ### Name: uniscale
> ### Title: Fit an Unidimensional Scaling for a Seriation Order
> ### Aliases: uniscale MDS_stress get_config plot_config
> ### Keywords: optimize
> 
> ### ** Examples
> 
> data(SupremeCourt)
> d <- as.dist(SupremeCourt)
> d
           Breyer Ginsburg Kennedy OConnor Rehnquist  Scalia  Souter Stevens
Ginsburg  0.11966                                                           
Kennedy   0.25000  0.26709                                                  
OConnor   0.20940  0.25214 0.15598                                          
Rehnquist 0.29915  0.30769 0.12179 0.16239                                  
Scalia    0.35256  0.36966 0.18803 0.20726   0.14316                        
Souter    0.11752  0.09615 0.24790 0.22009   0.29274 0.33761                
Stevens   0.16239  0.14530 0.32692 0.32906   0.40171 0.43803 0.16880        
Thomas    0.35897  0.36752 0.17735 0.20513   0.13675 0.06624 0.33120 0.43590
> 
> # embedding-based methods return "configuration" attribute
> # plot_config visualizes the configuration
> o <- seriate(d, method = "sammon")
> get_order(o)
  Stevens  Ginsburg    Breyer    Souter   OConnor   Kennedy Rehnquist    Thomas 
        8         2         1         7         4         3         5         9 
   Scalia 
        6 
> plot_config(o)
> 
> # the configuration (Note: objects are in the original order in d)
> get_config(o)
     Breyer    Ginsburg     Kennedy     OConnor   Rehnquist      Scalia 
-0.14684960 -0.19296338  0.08295734  0.02409031  0.14664466  0.25573113 
     Souter     Stevens      Thomas 
-0.10664165 -0.28273566  0.21976686 
> 
> # angle methods return a 2D configuration
> o <- seriate(d, method = "MDS_angle")
> get_order(o)
  Stevens    Souter  Ginsburg    Breyer   OConnor Rehnquist   Kennedy    Scalia 
        8         7         2         1         4         5         3         6 
   Thomas 
        9 
> get_config(o)
                 [,1]          [,2]
Breyer    -0.14049676  5.127010e-02
Ginsburg  -0.15882157 -9.597189e-05
Kennedy    0.07540714 -1.955142e-03
OConnor    0.05058155  8.506621e-02
Rehnquist  0.14235840  3.586661e-02
Scalia     0.19613081 -4.444093e-02
Souter    -0.12683772 -6.267484e-03
Stevens   -0.23446211 -6.798782e-02
Thomas     0.19614026 -5.145556e-02
> plot_config(o, )
> 
> 
> # calculate a configuration for a seriation method that does not
> # create a configuration
> o <- seriate(d, method = "ARSA")

 *** caught segfault ***
address 0x1, cause 'memory not mapped'

Traceback:
 1: method$fun(x, control = control)
 2: system.time(order <- method$fun(x, control = control))
 3: seriate.dist(d, method = "ARSA")
 4: seriate(d, method = "ARSA")
An irrecoverable exception occurred. R is aborting now ...