rounding
Detect Numerical Rounding
Given a numeric vector, or an object containing numeric spatial coordinates, determine whether the values have been rounded to a certain number of decimal places.
Usage
rounding(x)# S3 method for default
rounding(x)
# S3 method for ppp
rounding(x)
# S3 method for pp3
rounding(x)
# S3 method for ppx
rounding(x)
Arguments
- x
A numeric vector, or an object containing numeric spatial coordinates.
Details
For a numeric vector x
,
this function determines whether the values have been rounded
to a certain number of decimal places.
If the entries of
x
are not all integers, thenrounding(x)
returns the smallest number of digitsd
after the decimal point such thatround(x, digits=d)
is identical tox
. For example ifrounding(x) = 2
then the entries ofx
are rounded to 2 decimal places, and are multiples of 0.01.If all the entries of
x
are integers, thenrounding(x)
returns-d
, whered
is the smallest number of digits before the decimal point such thatround(x, digits=-d)
is identical tox
. For example ifrounding(x) = -3
then the entries ofx
are multiples of 1000. Ifrounding(x) = 0
then the entries ofx
are integers but not multiples of 10.If all entries of
x
are equal to 0, the rounding is not determined, and a value ofNULL
is returned.
For a point pattern (object of class "ppp"
)
or similar object x
containing numeric spatial
coordinates, this procedure is applied to the spatial coordinates.
Value
An integer.
See Also
Examples
# NOT RUN {
rounding(c(0.1, 0.3, 1.2))
rounding(c(1940, 1880, 2010))
rounding(0)
rounding(cells)
# }