calc_odm_multicore (multicore)

Source: R/calc_odm_multicore.R

Looped calculation of duration and distance matrices between all sources and targets (multicore)

calc_odm_multicore(profile_string, sources, targets, max_chunk_size, ors_url)

Arguments

profile_string

Route profile
sources

sf object of geometry type point containing the sources with coordinates in separate x, y columns
targets

data.frame containing the targets with coordinates in separate x, y columns
max_chunk_size

integer value defining the maximum number of source to target connections to be processed per loop
ors_url

url of the openrouteservice server to be used for processing

Value

odm-object of type list encompassing duration and distance matrices and the source and target locations

See also

calc_odm() for sequential odm_object creation with one core

Examples

if (FALSE) {
handlers(global = TRUE)
handlers("progress")
data(testdata)
sources <- testdata$od_result$sources
targets <- testdata$od_result$targets
# The testdata dataset is too small to generate time benefits out of using
# parallel processing. It should be applied to larger datasets
max_chunk_size <- 200 # depends on the config of the OpenRouteService server
registerDoFuture()
plan(multisession, gc = TRUE)
ors_url <- "SERVER URL"
res <- calc_odm_multicore(profile_string = "foot-walking",
                          sources = sources,
                          targets = targets,
                          max_chunk_size = 200,
                          ors_url = ors_url)
}