get_left_right_tiles: Get left and right tiles

In WCS-Marine/local-reef-pressures: Analysis of local human pressures on tropical coral reefs

Description

Get left and right OSM tiles for a given BCU - necessary for BCUs that cross the 180th meridian line (i.e., Fiji BCUs), as tmaptools::read_osm uses a fixed projection that cannot be changed and so cuts off.

Usage

get_left_right_tiles(bcus, bcu_name, bcu_ext, tile_type = "bing", zoom = NULL)

Arguments

bcus	Indicator data for BCUs, from data/bcus_list.rds
bcu_name	Name of BCU that tiles are being pulled for
bcu_ext	Extension factor of the BCU's bounding box, from data/bcus_ext.rds
tile_type	Type of OSM tile to get. Defaults to "bing".
zoom	Tile zoom. Defaults to NULL, in which case it is determined automatically

Value

A named list ("left" and "right") of OSM tiles.

Examples

bcu_name <- "Vatu-i-Ra"
bcus <- readRDS(here::here("data", "bcus_list.rds"))
bcu_ext <- readRDS(here::here("data", "bcus_ext.rds"))[[bcu_name]]

get_left_right_tiles(bcus, bcu_name, bcu_ext)

WCS-Marine/local-reef-pressures documentation built on Feb. 13, 2022, 9:26 a.m.