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- .TH UNFLATTEN 1 "21 January 2001"
- .SH NAME
- unflatten \- adjust directed graphs to improve layout aspect ratio
- .SH SYNOPSIS
- .B unflatten
- [\fB\-f?\fR]
- [\fB\-l\fIlen\fR]
- [\fB\-c\fIlen\fR
- ] [
- .B \-o
- .I outfile
- ]
- [ files ]
- .SH DESCRIPTION
- .B unflatten
- is a preprocessor to
- .B dot
- that is
- used to improve the aspect ratio of graphs having many leaves
- or disconnected nodes.
- The usual layout for such a graph is very wide or tall.
- .B unflatten
- creates chains with invisible edges or adjusts the \fBminlen\fP on edges
- to improve layout compaction.
- .SH OPTIONS
- The following options are supported:
- .TP
- .BI \-l " len"
- The \fBminlen\fP of leaf edges is staggered
- between 1 and \fIlen\fP (a small integer).
- .TP
- .B \-f
- Applies the \fB\-l\fP option to fanout nodes whose
- indegree and outdegree are both 1. This helps with structures such
- as \fIa -> {w x y z} -> b\fP.
- This option only works if the \fB\-l\fP flag is set.
- .TP
- .BI \-c " len"
- Form disconnected nodes into chains of up to \fIlen\fP edges.
- .TP
- .BI \-o " outfile"
- causes the output to be written to the specified file; by default,
- output is written to \fBstdout\fP.
- .TP
- .BI \-?
- Prints the usage and exits.
- .SH OPERANDS
- The following operand is supported:
- .TP 8
- .I files
- Names of files containing 1 or more graphs in dot format.
- If no
- .I files
- operand is specified,
- the standard input will be used.
- .SH AUTHORS
- Stephen C. North <[email protected]>
- .br
- Emden R. Gansner <[email protected]>
- .SH "SEE ALSO"
- gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)
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