Check whether a JamPolygon object is valid.
check_JamPolygon(object)JamPolygon object
It requires:
slotName(object) to contain "polygons"
object@polygons to inherit "data.frame"
colnames(object@polygons) to contain c("name", "x", "y")
General guidance for JamPolygon objects:
Empty polygons can be represented as one row in the data.frame
which contains NULL or numeric(0) x,y coordinates.
Empty polygons can be the result of intersect_JamPolygon()
that finds no suitable intersect.
Note that downstream processing, and plotting, must account for empty polygons and handle or ignore them accordingly.
Other JamPolygon:
JamPolygon-class,
Venndir-class,
[,JamPolygon,ANY,ANY,ANY-method,
add_orientation_JamPolygon(),
area_JamPolygon(),
bbox_JamPolygon(),
buffer_JamPolygon(),
check_Venndir(),
eulerr_to_JamPolygon(),
farthest_point_JamPolygon(),
find_venn_overlaps_JamPolygon(),
has_point_in_JamPolygon(),
intersect_JamPolygon(),
label_fill_JamPolygon(),
label_outside_JamPolygon(),
label_segment_JamPolygon(),
labelr_JamPolygon(),
minus_JamPolygon(),
nearest_point_JamPolygon(),
nudge_JamPolygon(),
plot.JamPolygon(),
point_in_JamPolygon(),
polyclip_to_JamPolygon(),
polygon_circles(),
polygon_ellipses(),
sample_JamPolygon(),
split_JamPolygon(),
union_JamPolygon(),
update_JamPolygon()