Alternative content
# generate dotplot
lastdb test/ref.fa
lastal -f TAB test/ref.fa test/contigs.reduced.pacbio.fa | last-dotplot - test/contigs.reduced.pacbio.fa.ref.png
lastal -f TAB test/ref.fa test/contigs.reduced.nanopore.fa | last-dotplot - test/contigs.reduced.nanopore.fa.ref.png