Create Linestrings from Points

Converts a collection of points to a collection of linestrings, for faster plotting. Points are grouped by date, and are assumed to be ordered. Note that input data will be dplyr::summarize()'d by date, i.e. output will probably be much shorter than input. Additionally, summarizing gets rid of all other information, i.e. return value only contains dates and linestrings and will have to be joined with any additional desired information.

Usage

to_linestrings(points)

Arguments

points

A data.frame or tibble with (at least) a date and an sf geometry column containing a point for each observation

Value

A tibble with two columns: date, and an sf geometry column, containing a linestring for each observation

Examples

library(sf)
#> Linking to GEOS 3.10.2, GDAL 3.4.1, PROJ 8.2.1; sf_use_s2() is TRUE
library(dplyr)
library(ggplot2)
points <- track_details |>
  filter(!is.na(latitude) & !is.na(longitude)) |>
  st_as_sf(coords = c("longitude", "latitude"), crs = "WGS84")
to_linestrings(points) |>
  ggplot() +
  geom_sf()