ccomps
(1)
Name
ccomps - connected components filter for graphs
Synopsis
ccomps [ -sxvenzC? ] [ -X[#]s[-f] ] [ -ooutfile ] [ files ]
Description
User Commands CCOMPS(1)
NAME
ccomps - connected components filter for graphs
SYNOPSIS
ccomps [ -sxvenzC? ] [ -X[#]s[-f] ] [ -ooutfile ] [ files ]
DESCRIPTION
ccomps decomposes graphs into their connected components,
printing the components to standard output.
OPTIONS
The following options are supported:
-e Do not induce edges in the connected components.
-s No output graph is printed. The return value can be
used to check if the graph is connected or not.
-x Only the connected components are printed, as separate
graphs.
-v Counts of nodes, edges and connected components are
printed.
-z Sort components by size, with the largest first. This
is only effective if either -x or -X# is present.
Thus, -zX#0 will cause the largest component to be
printed.
-C Use clusters in computing components in addition to
normal edge connectivity. In essence, this gives the
connected components of the derived graph in which
nodes top-level clusters and nodes in the original
graph. This maintains all subgraph structure within a
component, even if a subgraph does not contain any
nodes.
-n Do not project subgraph structure. Normally, if ccomps
produces components as graphs distinct from the input
graph, it will define subgraphs which are projections
of subgraphs of the input graph onto the component. (If
the projection is empty, no subgraph is produced.) If
this flag is set, the component contains only the rele-
vant nodes and edges.
-X node_name
Prints only the component containing the node
node_name, if any.
-X# start
-X# start-
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User Commands CCOMPS(1)
-X# start-last
Prints only components in the given range. In the first
form, only the component whose index is start, if any,
is printed. In the second form, each component whose
index is at least start is printed. In the last form,
only those components whose indices are in the range
[Istart,last] are printed. Thus, the flag -x is equiv-
alent to -X#0-.
-o outfile
If specified, each graph will be written to a different
file with the names derived from outfile. In particu-
lar, if both -o and -x flags are used, then each con-
nected component is written to a different file. If
outfile does not have a suffix, the first file will
have the name outfile; then next outfile_1, then next
outfile_2, and so on. If outfile has a suffix, i.e.,
has the form base.sfx, then the files will be named
base.sfx, base_1.sfx, base_2.sfx, etc.
By default, each input graph is printed, with each connected
component given as a subgraph whose name is a concatenation
of the name of the input graph, the string "_cc_" and the
number of the component.
OPERANDS
The following operand is supported:
files Names of files containing 1 or more graphs in dot
format. If no files operand is specified, the stan-
dard input will be used.
RETURN CODES
Unless used to extract a single connected component, ccomps
returns 0 if all the input graphs are connected; and non-
zero if any graph has multiple components, or any error
occurred. If just extracting a single component, ccomps
returns 0 on success and non-zero if an error occurred.
BUGS
It is possible, though unlikely, that the names used for
connected components and their subgraphs may conflict with
existing subgraph names.
AUTHORS
Stephen C. North <north@research.att.com>
Emden R. Gansner <erg@research.att.com>
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
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User Commands CCOMPS(1)
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | image/graphviz |
+---------------+------------------+
|Stability | Volatile |
+---------------+------------------+
SEE ALSO
gc(1), dot(1), gvpr(1), gvcolor(1), acyclic(1), sccmap(1),
tred(1), libgraph(3)
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://www.graphviz.org/pub/graphviz/sta-
ble/SOURCES/graphviz-2.28.0.tar.gz
Further information about this software can be found on the
open source community website at http://www.graphviz.org/.
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