Read link data of pairwise sequence or feat comparisons, such as similarity searches into a tidy dataframe and augment it with layout information based on a sequence layout.
as_links(x, seqs, ..., everything = TRUE)a link layout
link data convertible to a link layout
the sequence layout the feat map onto.
passed on to layout_seqs()
set to FALSE to drop optional columns
Obligatory columns are seq_id and seq_id2. Also recognized are
start, end,start2,end2,strand, bin_idandbin_id2.
During layouting, seq_id,start,end will be projected to x,xend,y, while seq_id2,start2,end2 will be projected to xmin,xmax,yend. gggenomes uses these maybe a bit odd names for the variables here, is so that they play nice with ggplots native transformation functions for position aesthetics. Those only work well with a specific set of predefined var names, which include those used above.