Hello
I am trying to call 'degree' on a graphNEL object and I get the following error using the example from the vignette. 
Thanks for your help
-burak

> library(graph)
> set.seed(123)
> g1 = randomEGraph(LETTERS[1:15], edges=100)
> g1
A graphNEL graph with undirected edges
Number of Nodes = 15 
Number of Edges = 100 
> 
> 
> nodes(g1)
 [1] "A" "B" "C" "D" "E" "F" "G" "H" "I" "J" "K" "L" "M" "N" "O"
> degree(g1)
Error in degree(g1) : Not a graph object
> 
> sessionInfo()
R version 2.14.1 (2011-12-22)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=C                 LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] igraph_0.5.5-4        RBGL_1.30.1           org.Mm.eg.db_2.6.4   
[4] RSQLite_0.11.1        DBI_0.2-5             AnnotationDbi_1.16.18
[7] Biobase_2.14.0        graph_1.32.0          BiocInstaller_1.2.1  

loaded via a namespace (and not attached):
[1] IRanges_1.12.6 tools_2.14.1  
> 
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