27.1.22. Vector Tiles

27.1.22.1. Write vector tiles (MBTiles)

Exports one or more vector layers to vector tiles, a data format optimized for fast map rendering and small data size.

MBTiles is a specification for storing tiled map data in SQLite databases for immediate usage and for transfer. MBTiles files are known as tilesets.

Параметры

Ярлык	Имя	Тип	Описание
Input layers	`INPUT`	[vector: any] [list]	A list of layers to combine to generate the vector tiles
Minimum zoom level	`MIN_ZOOM`	[number] Default: 0	The lowest zoom level for which the tileset provides data. Set between 0 and 24.
Maximum zoom level	`MAX_ZOOM`	[number] Default: 3	The highest zoom level for which the tileset provides data. Set between 0 and 24.
Extent Optional	`EXTENT`	[extent] Default: Not set	The maximum extent of the rendered map area. Bounds must define an area covered by all zoom levels.
Metadata: Name Optional	`META_NAME`	[string]	Name of the tileset
Metadata: Description Optional	`META_DESCRIPTION`	[string]	A description of the tileset’s contents
Metadata: Attribution Optional	`META_ATTRIBUTION`	[string]	An attribution string, which explains the sources of data and/or style for the map.
Metadata: Version Optional	`META_VERSION`	[string]	The version of the tileset. This refers to a revision of the tileset itself, not of the MBTiles specification.
Metadata: Type Optional	`META_TYPE`	[string]	Type of tileset. Possible values are `overlay` or `baselayer`.
Metadata: Center Optional	`META_CENTER`	[string]	The center (string of comma-separated numbers: the longitude, latitude, and zoom level) of the default view of the map. Example: `-122.1906,37.7599,11`
Destination MBTiles	`OUTPUT`	[vector tiles] Default: [Save to temporary file]	Specification of the output MBTiles file. One of: Сохранить во временный файл Save to File…

Результаты

Ярлык	Имя	Тип	Описание
Destination MBTiles	`OUTPUT`	[файл]	Output vector tiles `.mbtiles` file.

Код на Python

Algorithm ID: native:writevectortiles_mbtiles

import processing
processing.run("algorithm_id", {parameter_dictionary})

ID алгоритма отображается при наведении мыши на алгоритм в Инструментах анализа. Словарь parameter dictionary содержит ключи параметров и их значения. См. Изпользование алгоритмов геообработки в консоли для детального описания того, как запускать алгоритмы анализа из консоли Python.

27.1.22.2. Write vector tiles (XYZ)

Exports one or more vector layers to vector tiles, a data format optimized for fast map rendering and small data size.

Параметры

Ярлык	Имя	Тип	Описание
File template	`XYZ_TEMPLATE`	[string] Default: „{z}/{x}/{y}.pbf“	Template to generate the vector tiles url
Input layers	`INPUT`	[vector: any] [list]	A list of layers to combine to generate the vector tiles
Minimum zoom level	`MIN_ZOOM`	[number] Default: 0	The lowest zoom level for which the tileset provides data. Set between 0 and 24.
Maximum zoom level	`MAX_ZOOM`	[number] Default: 3	The highest zoom level for which the tileset provides data. Set between 0 and 24.
Extent Optional	`EXTENT`	[extent] Default: Not set	The maximum extent of the rendered map area. Bounds must define an area covered by all zoom levels.
Output directory	`OUTPUT_DIRECTORY`	[folder] Default: [Save to temporary folder]	Specification of the output vector tiles folder. One of: Save to a Temporary Directory Save to Directory

Результаты

Ярлык	Имя	Тип	Описание
Output directory	`OUTPUT_DIRECTORY`	[folder]	A folder containing different subsets of the vector tiles files (`.pbf`) stored in subfolders corresponding to the zoom levels.

Код на Python

Algorithm ID: native:writevectortiles_xyz

import processing
processing.run("algorithm_id", {parameter_dictionary})

ID алгоритма отображается при наведении мыши на алгоритм в Инструментах анализа. Словарь parameter dictionary содержит ключи параметров и их значения. См. Изпользование алгоритмов геообработки в консоли для детального описания того, как запускать алгоритмы анализа из консоли Python.