Description Usage Arguments Details Value Author(s) See Also Examples
Given a simulation envelope (object of class "envelope"
),
compute another envelope from the same simulation data
using different parameters.
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Y |
A simulation envelope (object of class |
fun |
Optional. Summary function to be applied to the simulated point patterns. |
...,transform,global,VARIANCE |
Parameters controlling the type of envelope that is re-computed.
See |
This function can be used to re-compute a simulation envelope from previously simulated data, using different parameter settings for the envelope: for example, a different significance level, or a global envelope instead of a pointwise envelope.
The function envelope
is generic. This is the method for
the class "envelope"
.
The argument Y
should be a simulation envelope (object of
class "envelope"
) produced by any of the methods for
envelope
. Additionally, Y
must contain either
the simulated point patterns that were used to create
the original envelope (so Y
should have been created by calling
envelope
with savepatterns=TRUE
);
the summary functions of the simulated point patterns
that were used to create
the original envelope (so Y
should have been created by calling
envelope
with savefuns=TRUE
).
If the argument fun
is given, it should be a summary function
that can be applied to the simulated point patterns that were
used to create Y
. The envelope of
the summary function fun
for these point patterns
will be computed using the parameters specified in ...
.
If fun
is not given, then:
If Y
contains the summary functions that were used to
compute the original envelope, then the new envelope will be
computed from these original summary functions.
Otherwise, if Y
contains the simulated point patterns.
then the K function Kest
will be applied to
each of these simulated point patterns, and the new envelope will
be based on the K functions.
The new envelope
will be computed using the parameters specified in ...
.
See envelope
for a full list of envelope parameters.
Frequently-used parameters include nrank
and nsim
(to change the
number of simulations used and the significance level of the
envelope), global
(to change from pointwise to global
envelopes) and VARIANCE
(to compute the envelopes from the sample
moments instead of the ranks).
An envelope (object of class "envelope"
.
and \rolf
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