	This is part of the adjmat module
	It is only available if you configure PLUMED with ./configure –enable-modules=adjmat . Furthermore, this feature is still being developed so take care when using it and report any problems on the mailing list.

Write out the connectivity of the nodes in the graph in dot format.

MATRIX	the action that calculates the adjacency matrix vessel we would like to analyze
STRIDE	( default=1 ) the frequency with which you would like to output the graph
FILE	the name of the file on which to output the data
MAXCONNECT	( default=0 ) maximum number of connections that can be formed by any given node in the graph. By default this is set equal to zero and the number of connections is set equal to the number of nodes. You only really need to set this if you are working with a very large system and memory is at a premium