Description Usage Arguments Details See Also
A combined global envelope test including simulations from a point process model.
1 2 3 4 5 6 | combined_global_envelope_with_sims(X, nsim, simfun = NULL,
simfun.arg = NULL, ..., testfuns = NULL, test = c("rank", "qdir", "st"),
alpha = 0.05, alternative = c("two.sided", "greater", "less"),
r_min = NULL, r_max = NULL, take_residual = FALSE, lexo = TRUE,
ties = NULL, save.envelope = TRUE, savefuns = FALSE,
savepatterns = FALSE, verbose = FALSE)
|
X |
An object containing point pattern data. A point pattern (object of class "ppp")
or a fitted point process model (object of class "ppm" or "kppm"). See
|
nsim |
The number of simulations. |
simfun |
A function for generating simulations from the null model. If given, this function
is called by replicate(n=nsim, simfun(simfun.param), simplify=FALSE) to make nsim simulations.
The function should return an |
simfun.arg |
The parameter to be passed to simfun. The function simfun should handle with the structure of simfun.param. |
... |
Additional parameters passed to |
testfuns |
A list of lists of parameters to be passed to |
test |
Either "rank" for the |
alpha |
The significance level. The 100(1-alpha)% global envelope will be calculated. |
alternative |
A character string specifying the alternative hypothesis. Must be one of the following: "two.sided" (default), "less" or "greater" for "rank". Relevant only for the rank test (otherwise ignored). |
r_min |
The minimum radius to include in the test. |
r_max |
The maximum radius to include in the test. Note: cannot be larger than r-values used
in calculating functions by |
take_residual |
If (needed for visual reasons only) the theoretical or mean behaviour of the
test function is reduced from the test functions. If TRUE, then: If |
lexo |
Logical, whether or not to use lexical ordering for calculation of the p-value.
in the rank envelope test. See |
ties |
Ties method to be passed to |
save.envelope |
Logical flag indicating whether to save all envelope test results. |
savefuns |
Logical flag indicating whether to save all the simulated function values.
See |
savepatterns |
Logical flag indicating whether to save all the simulated point patterns.
See |
verbose |
Logical flag indicating whether to print progress reports during the simulations.
See |
Details of the tests are given in rank_envelope
(rank envelope test),
combined_scaled_MAD_envelope
(directional quantile and studentized envelope tests).
The specification of X is important here:
if simfun is not provided, the function envelope
is used to generate
simulations under the null hypothesis and to calculate the test functions (specified in the
arguments ...) and then
If X is a point pattern, the null hypothesis is CSR.
If X is a fitted model, the null hypothesis is that model.
If simfun is provided, then the null model is the one simulated by this given function,
and X is expected to be a point pattern of ppp
object, for which data
pattern and simulations envelope
calculates the test statistics.
If savefuns is TRUE, all the simulated functions are saved in an attribute "simfuns" as a list of curve sets for each test function.
envelope
(that is used to perform simulations),
rank_envelope
, qdir_envelope
, st_envelope
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.