## S3 method for class 'ppp':
shift(X, vec=c(0,0), ..., origin=NULL)
"ppp"
)."centroid"
, "midpoint"
and "bottomleft"
.
Partially matched."ppp"
) representing the
result of applying the vector shift.vec
.
This is a method for the generic function shift
. If origin
is given, then it should be one of the character
strings "centroid"
, "midpoint"
or "bottomleft"
.
The argument vec
will be ignored; instead the shift will be performed
so that the specified geometric location is shifted to the origin.
If origin="centroid"
then the centroid of the window will be
shifted to the origin. If origin="midpoint"
then the centre of
the bounding rectangle of the window will be shifted to the origin.
If origin="bottomleft"
then the bottom left corner of the
bounding rectangle of the window will be shifted to the origin.
shift
,
shift.owin
,
rotate
,
affine
data(cells)
X <- shift(cells, c(2,3))
plot(X)
# no discernible difference except coordinates are different
plot(cells, pch=16)
plot(shift(cells, c(0.03,0.03)), add=TRUE)
shift(cells, origin="mid")
Run the code above in your browser using DataLab