drsummary {DRHotNet} | R Documentation |
Performs a summary of a set of differential risk hotspots located along a linear network
Description
This function provides a basic summary of each differential risk hotspot provided in the object hotspots
passed to the function. This includes the proportion of the type of event in each hotspot, the total length of the hotspot, a type-specific prediction accuracy index (PAI_t
). Furthermore, this summary is also provided for an extension of each of the hotspots
Usage
drsummary(
X,
rel_probs,
hotspots,
order_extension = NULL,
compute_p_value = F,
n_it = 40
)
Arguments
X |
- A |
rel_probs |
- An object containing the relative probabilities of a specific type of event along the linear network contained in |
hotspots |
- A set of differential risk hotspots obtained with the function |
order_extension |
- A natural number indicating a neighbourhood order to be used for constructing an extension of the differential risk hotspots. The summary is also given for the segments forming this extension |
compute_p_value |
- A logical value allowing the user to compute a p-value representing the statistical significance of each differential risk hotspot. It is set to FALSE by default |
n_it |
- Number of simulations performed for the estimation of the p-value (if |
Value
Returns a data.frame
providing a summary of a set of differential risk hotspots. Each row of the output corresponds to one hotspot
Examples
library(DRHotNet)
library(spatstat.geom)
library(spatstat.linnet)
library(spdep)
library(raster)
rel_assault <- relpnet(X = chicago,
lixel_length = 50, h = 50, mark = "marks", category_mark = "assault")
hotspots_assault <- drhot(X = chicago, rel_probs = rel_assault,
k = 0.5, n = 4)
hotspots_summary <- drsummary(X = chicago, rel_probs = rel_assault,
hotspots = hotspots_assault)