TileDownloader

class TileDownloader(**properties: Any)

Superclasses: DataSource, Object

A DataSource that asynchronously downloads tiles from an online service using a given template.

It contains an internal FileCache to cache the tiles on the system.

Constructors

class TileDownloader
classmethod new(url_template: str) → TileDownloader

Creates a new TileDownloader that fetches tiles from an API and caches them on disk.

See url_template for the format of the URL template.

Parameters:

url_template – a URL template to fetch tiles from

Properties

class TileDownloader
props.url_template: str

A template for construting the URL to download a tile from.

The template has the following replacements:

  • “{x}”: The X coordinate of the tile

  • “{y}”: The Y coordinate of the tile

  • “{z}”: The zoom level of the tile

  • “{tmsy}”: The inverted Y coordinate (i.e. tile numbering starts with 0 at

the bottom, rather than top, of the map)