simple_nkde: Simple NKDE algorithm
Description
Function to perform the simple nkde.
Usage
simple_nkde(graph, events, samples, bws, kernel_func, nodes, edges)
Arguments
graph
a graph object from igraph representing the network
events
a SpatialPointsDataFrame representing the events. It must be
snapped on the network, and be nodes of the network. A column vertex_id
must indicate for each event its corresponding node
samples
a SpatialPointsDataFrame representing the sampling points.
The samples must be snapped on the network. A column edge_id must indicate
for each sample on which edge it is snapped.
bws
a vector indicating the kernel bandwidth (in meters) for each
event
kernel_func
a function obtained with the function select_kernel
nodes
a SpatialPointsDataFrame representing the nodes of the network
edges
a SpatialLinesDataFrame representing the edges of the network
Value
a dataframe with two columns. sum_k is the sum for each sample point
of the kernel values. n is the number of events influencing each sample
point
Examples
Run this code# NOT RUN {
#This is an internal function, no example provided
# }
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