harmonise.fv {spatstat.explore} | R Documentation |
Make Function Tables Compatible
Description
Convert several objects of class "fv"
to the same values of the function argument.
Usage
## S3 method for class 'fv'
harmonise(..., strict=FALSE)
## S3 method for class 'fv'
harmonize(..., strict=FALSE)
Arguments
... |
Any number of function tables (objects of class |
strict |
Logical. If |
Details
A function value table (object of class "fv"
) is
essentially a data frame giving the values of a function
(or several alternative estimates of this value)
at equally-spaced values of the function argument
.
The command harmonise
is generic. This is the
method for objects of class "fv"
.
This command makes any number of "fv"
objects compatible,
in the loose sense that they have the same sequence of values of
. They can then be combined by
cbind.fv
,
but not necessarily by eval.fv
.
All arguments ...
must be function value tables
(objects of class "fv"
).
The result will be a list, of length equal to the number of
arguments ...
, containing new versions of each of these functions,
converted to a common sequence of values.
If the arguments were named (
name=value
) then the return value
also carries these names.
The range of values in the resulting functions
will be the intersection of the ranges of
values
in the original functions.
The spacing of
values in the resulting functions
will be the finest (narrowest) of the spacings of the
values in the original functions.
Function values are interpolated using
approxfun
.
If strict=TRUE
, each column of data will be retained only if
a column of the same name appears in all of the arguments ...
.
This ensures that the resulting objects are strictly compatible
in the sense of compatible.fv
,
and can be combined using eval.fv
or collapse.fv
.
If strict=FALSE
(the default), this does not occur,
and then the resulting objects are not guaranteed to be compatible
in the sense of compatible.fv
.
Value
A list, of length equal to the number of arguments ...
,
whose entries are objects of class "fv"
.
If the arguments were named (name=value
) then the return value
also carries these names.
Author(s)
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner rolfturner@posteo.net and Ege Rubak rubak@math.aau.dk.
See Also
fv.object
,
cbind.fv
,
eval.fv
,
compatible.fv
Examples
H <- harmonise(K=Kest(cells), G=Gest(cells))
H