R help - May 2007 - function name collision

I am using the "graph" package, which has a function called union()  
that acts on graph objects.  There is also a {base} function called  
union().  How do I explicitly specify union {graph} instead of the  
default union {base} ?

union(g1, g2)   evokes the wrong union(), which produces an error.

Thanks for the help.
- Bobby

Bobby Prill <rprill at jhu.edu> writes:
> I am using the "graph" package, which has a function called
union()
> that acts on graph objects.  There is also a {base} function called  
> union().  How do I explicitly specify union {graph} instead of the  
> default union {base} ?
>
> union(g1, g2)   evokes the wrong union(), which produces an error.
graph::union()
base::union()

And since functions are first class in R, you can make aliases:

gunion <- graph::union
bunion <- base:union

If you are working interactively, then after loading the graph
package, you should get its version of union.

+ seth

-- 
Seth Falcon | Computational Biology | Fred Hutchinson Cancer Research Center
http://bioconductor.org