Add a column with height to GPS data — append

Add a column named height to GPS data using a tif data as reference.

Usage

append_height(gps, heightfile)

Arguments

gps: A GPS data created from gtfs2gps().
heightfile: The pathname of a tif file with height data.

Value

The GPS data with a new column named height.

Examples

if (FALSE) { # \dontrun{
# this example takes more than 10s to run

fortaleza <- system.file("extdata/fortaleza.zip", package = "gtfs2gps")
srtmfile <- system.file("extdata/fortaleza-srtm.tif", package = "gtfs2gps")

gtfs <- read_gtfs(fortaleza) |>
  gtfstools::filter_by_shape_id("shape836-I") |>
  filter_single_trip() 

fortaleza_gps <- gtfs2gps(gtfs, spatial_resolution = 500) |> append_height(srtmfile)
} # }