gvpack
Merge and pack disjoint graphs
TLDR
Merge laid-out graphs
$ gvpack [graph1.dot] [graph2.dot] > [merged.dot]
Pack at graph level (prevents interleaving)$ gvpack -g [graph1.dot] [graph2.dot] > [merged.dot]
Pack at node level (ignoring clusters)$ gvpack -n [graph1.dot] [graph2.dot] > [merged.dot]
Combine without packing$ gvpack -u [graph1.dot] [graph2.dot] > [merged.dot]
Arrange in array layout with margin$ gvpack -array -m [20] [graph1.dot] [graph2.dot] > [merged.dot]
Set graph attributes on output$ gvpack -G "label=[My Graph]" [graph1.dot] [graph2.dot] > [merged.dot]
Full pipeline: decompose, layout, pack, render$ ccomps -x [graph.dot] | dot | gvpack | neato -s -n2 -Tpng -o [output.png]
SYNOPSIS
gvpack [options] [files]
DESCRIPTION
gvpack reads in a stream of graphs, combines them into a single layout, and produces a single graph serving as the union of the input graphs. Input must be in dot format with layout information (produced by a layout engine like dot or neato without the -T flag). By default, packing is at cluster level, preventing graph parts from overlapping. Output can be rendered with neato -s -n2 and the desired output format.
PARAMETERS
-g
Pack at graph level. Uses more space but prevents parts of one graph from occurring between parts of another.-n
Pack at node level, ignoring clusters.-u
Combine without packing. Just merge into a single graph.-array[flags][n]
Arrange graphs in an array layout. Optional flags: c (column-major), t/b/l/r (align top/bottom/left/right), u (use sortv attribute). Optional n sets columns (or rows with c).-m margin
Packing margin in points around each part.-o file
Output to file instead of stdout.-s name
Root graph name (default: root).-G name=value
Add attributes to the resulting union graph.-v
Verbose mode.
INSTALL
sudo apt install graphviz
sudo dnf install graphviz
sudo pacman -S graphviz
sudo apk add graphviz
sudo zypper install graphviz
brew install graphviz
nix profile install nixpkgs#graphviz
CAVEATS
All input graphs must be either all directed or all undirected. Nodes with the same names across graphs are automatically renamed to avoid conflicts.