Description Usage Arguments Details Value
Generate density estimates for time slices of a trip
1 2 3 4 5 6 7 8 9 10 11 | slice(slices, k, mcmc = slices$mcmc, grid = slices$grid,
weights = slices$weights, method = slices$method,
bandwidth = slices$bandwidth, chains = NULL)
slices(type = c("primary", "intermediate"), breaks = NULL, mcmc = NULL,
grid = raster(), weights = NULL, method = c("hist", "kde"),
bandwidth = 0, include.lowest = TRUE, right = FALSE)
sliceInterval(slices, k, mcmc = slices$mcmc)
sliceIndices(slices, mcmc = slices$mcmc)
|
slices |
an object generated by |
k |
the index of the time slice to bin. |
mcmc |
object generated by generated by
|
grid |
raster object that defines the sampling grid. |
weights |
weights for each location. |
method |
return a kernel density estimate ( |
bandwidth |
bandwidth of the kernel density estimator. |
chains |
NULL or the subset of chains to bin. |
type |
construct density rasters for |
breaks |
NULL, or a specification suitable for
|
include.lowest |
parameter to |
right |
parameter to |
These functions divide a trip into time slices, and generate location density estimates for each time slice.
The slices
function defines the slices into which the trip
is divided, and whether density estimates are generated for the
primary or intermediate locations. If breaks
is NULL, each
location forms a separate time slice, otherwise breaks
divides the trip into time slices in the same style as
cut.POSIXt
. A default set of samples and a raster
defining the spatial grid may also be specified.
The slice
function generates a density estimate for a time
slice, sliceInterval
returns the corresponding time
interval, and sliceIndices
returns the indices that will
yield non null raster.
slice
returns the locations for time slice of the
track binned into a raster, slices
returns a slices
object that defines the time slices into which to bin,
sliceInterval
returns the time interval spanned by a
slice, and sliceIndices
returns the valid set of indices
that will yield a raster.
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