I seem to be having trouble reading a DIMACS file with the R version of igraph:
> lost_sole <- read.graph("shoes.dimacs", format="dimacs")
Error in read.graph.dimacs(file, ...) :
At foreign.c:767 : Unknown problem type, should be 'edge' or 'max', Parse error
-- R version 2.13.0 (2011-04-13)
-- igraph_0.5.5-2.tgz
I'm not sure if it's an igraph problem or a problem with the DIMACS file. FWIW- others are using the same DIMACS file using other programs.
Does anyone have an experience with DIMACS files and igraph and might be able to provide a test file/script to check my install.
or any other suggestions regarding what may be going on?
Thanks!