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tile_layer.rst

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Tile layer

Example

#include "xleaflet/xmap.hpp"
#include "xleaflet/xbasemaps.hpp"

auto map = xlf::map::initialize()
    .center({52.204793, 360.121558})
    .zoom(9)
    .finalize();

auto dark_matter_layer = xlf::basemap({"CartoDB", "DarkMatter"});
map.add_layer(dark_matter_layer);
map

Usage

Creating a tile_layer is straightforward, a list of basic tile layers is provided. This list of layers can be accessed using the basemaps function:

#include <iostream>

#include "xleaflet/xbasemaps.hpp"

std::cout << xlf::basemaps().dump(6) << std::endl;

A tile_layer instance can be created using the basemap function, specifying the wanted map (e.g. {"CartoDB", "DarkMatter"}, {"Strava", "Winter"}, {"NASAGIBS", "ModisTerraTrueColorCR"}, ...).

Sometimes one could want to specify the date of the given images, for instance with NASA images:

auto nasa_layer = xlf::basemap({"NASAGIBS", "ModisTerraTrueColorCR"}, "2018-04-08");
map.add_layer(nasa_layer);

Attributes

Attribute Type Default Value
url std::string "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
min_zoom int 0
max_zoom int 18
tile_size int 256
attribution std::string "Map data (c) <a href='https://openstreetmap.org\'>OpenStreetMap</a> contributors"
detect_retina bool false
opacity float 1.0
visible bool true