R: Add Z value to geometries and export in a new file

geojson_addZ

R Documentation

Add Z value to geometries and export in a new file

Description

Use geoserver API to recover the Z for given set of points stored in GeoJSON file. Geoserver API can lead to Timeout.

Usage

geojson_addZ(
  geojson.path = paste0(system.file(package = "eamenaR"),
    "/extdata/caravanserail.geojson"),
  geojson.out = NA,
  ids = "EAMENA ID",
  elevation.api = "gmrt_point",
  timeout = 30,
  sleep = 0.3,
  dirOut = paste0(system.file(package = "eamenaR"), "/results/"),
  verbose = TRUE
)

Arguments

`geojson.path`	path of GeoJSON file. By default 'caravanserail.geojson'.
`geojson.out`	name of output file. By default NA, will add suffix 'Z' to name of GeoJSON file (variable 'geojson.path').
`ids`	field having the unique keys, to remove duplicated geometries. By default "EAMENA ID".
`elevation.api`	the geoserver API used to collect the elevation, by default 'gmrt_point' (https://www.gmrt.org). Another option is 'gmrt_profile', and 'open-elevation' (https://api.open-elevation.com/).
`timeout`	the threshold below which the expectation of a response is accepted, in seconds. By default, 30.
`sleep`	the time delay between two API request in seconds. By default 0.3.
`dirOut`	the folder where outputs will be saved. By default: '/results'. If folder doesn't exist, it will be created.
`verbose`	if TRUE (by default): verbose.

Examples


df <- geojson_addZ()

# using 'open-elevation' as API
df <- geojson_addZ(elevation.api = 'open-elevation')