kasc2spixdf | R Documentation |
These functions convert maps of classes available in adehabitat toward
classes available in the package sp
and conversely.
kasc2spixdf
converts an object of class kasc
into an
object of class SpatialPixelsDataFrame
.
asc2spixdf
converts an object of class asc
into an
object of class SpatialGridDataFrame
.
area2spol
converts an object of class area
into an
object of class SpatialPolygons
.
spol2area
converts an object of class SpatialPolygons
or
SpatialPolygonsDataFrame
into an object of class
area
.
attpol2area
gets the data attribute of an object of class
SpatialPolygonsDataFrame
and stores it into a data frame.
kasc2spixdf(ka)
asc2spixdf(a)
area2spol(ar)
spol2area(sr)
attpol2area(srdf)
ka |
an object of class |
a |
an object of class |
ar |
an object of class |
sr |
an object of class |
srdf |
an object of class |
We describe here more in detail the functions spol2area
and
attpol2area
. Objects of class area
do not deal with
holes in the polygons, whereas the objects of class
SpatialPolygons
do. Therefore, when holes are present in the
SpatialPolygons
object passed as argument, the function
spol2area
ignore them and returns only the external contour of
the polygon (though a warning is returned).
Clement Calenge clement.calenge@ofb.gouv.fr
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