Pool Data from Several Envelopes
Pool the simulation data from several simulation envelopes
(objects of class
and compute a new envelope.
## S3 method for class 'envelope': pool(..., savefuns=FALSE, savepatterns=FALSE)
- Objects of class
- Logical flag indicating whether to save all the simulated function values.
- Logical flag indicating whether to save all the simulated point patterns.
pool is generic. This is the method for the
"envelope" of simulation envelopes. It is used to
combine the simulation data from several simulation envelopes
and to compute an envelope based on the combined data.
Each of the arguments
... must be an object of class
"envelope". These envelopes must be compatible,
in that they are envelopes for the same function,
and were computed using the same options.
- In normal use, each envelope object will have been
created by running the command
envelopewith the argument
savefuns=TRUE. This ensures that each object contains the simulated data (summary function values for the simulated point patterns) that were used to construct the envelope.
The simulated data are extracted from each object and combined. A new envelope is computed from the combined set of simulations.
VARIANCE=TRUE, then the saved functions are not required. The sample means and sample variances from each envelope will be pooled. A new envelope is computed from the pooled mean and variance.
Warnings or errors will be issued if the envelope objects
appear to be incompatible. Apart from these basic checks,
the code is not smart enough to decide whether it is sensible
to pool the data.
To modify the envelope parameters or the type of envelope that is
computed, first pool the envelope data using
envelope.envelope to modify the envelope
- An object of class
data(cells) E1 <- envelope(cells, Kest, nsim=10, savefuns=TRUE) E2 <- envelope(cells, Kest, nsim=20, savefuns=TRUE) pool(E1, E2) V1 <- envelope(E1, VARIANCE=TRUE) V2 <- envelope(E2, VARIANCE=TRUE) pool(V1, V2)