R/geom_subgene_arrow.R
geom_subgene_arrow.Rd
geom_subgene_arrow()
draws subgenes segments within gene arrows drawn with
geom_gene_arrow()
.
As standard for 'ggplot2'.
grid::unit()
object giving the width of the
arrowhead. Defaults to 4 mm. If the gene is drawn smaller than this width,
only the arrowhead will be drawn, compressed to the length of the gene.
grid::unit()
object giving the height of the
arrowhead. Defaults to 4 mm.
grid::unit()
object giving the height of the body
of the arrow. Defaults to 3 mm.
The start and end locations of the subgene are given with the xsubmin
and
xsubmax
aesthetics. geom_subgene_arrow()
requires some information about
the 'parent' gene, provided with the same aesthetics used for
geom_gene_arrow()
: start and end locations of the 'parent' gene with the
xmin
and xmax
aesthetics, the molecule with the y
aesthetic, and
optionally the direction with the forward
aesthetic. If the geometry of
the parent gene has been changed with arrowhead_width
, arrowhead_height
or arrow_body_height
, identical parameters should be given to
geom_subgene_arrow()
.
xmin,xmax (start and end of the gene; will be used to determine gene orientation)
xsubmin,xsubmax (start and end of subgene segment). Should be consistent
with xmin
/xmax
y (molecule)
forward (if FALSE, or coercible to FALSE, the gene arrow will be drawn in
the opposite direction to that determined by xmin
and xmax
)
alpha
colour
fill
linetype
size
ggplot2::ggplot(example_genes, ggplot2::aes(xmin = start, xmax = end,
y = molecule)) +
geom_gene_arrow() +
geom_subgene_arrow(data = example_subgenes,
ggplot2::aes(xmin = start, xmax = end, xsubmin = from, xsubmax = to,
y = molecule, fill = gene)) +
ggplot2::facet_wrap(~ molecule, scales = "free")