gvpack

Combine several graph layouts (that already have layout information). Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, & unflatten. More information: https://graphviz.org/pdf/gvpack.1.pdf.

• Combine several graph layouts (that already have layout information):
  gvpack {{path/to/layout1.gv}} {{path/to/layout2.gv ...}} > {{path/to/output.gv}}
• Combine several graph layouts at the graph level, keeping graphs separate:
  gvpack -g {{path/to/layout1.gv}} {{path/to/layout2.gv ...}} > {{path/to/output.gv}}
• Combine several graph layouts at the node level, ignoring clusters:
  gvpack -n {{path/to/layout1.gv}} {{path/to/layout2.gv ...}} > {{path/to/output.gv}}
• Combine several graph layouts without packing:
  gvpack -u {{path/to/layout1.gv}} {{path/to/layout2.gv ...}} > {{path/to/output.gv}}
• Display help for gvpack:
  gvpack -?