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28.1.26. Vector Tiles

28.1.26.1. Download vector tiles

NEW in 3.32

Downloads vector tiles of an input vector tile layer and saves them in a local vector tile file.

Параметры

Ярлык	Имя	Тип	Описание
Исходный слой	INPUT	[vector tiles]	A vector tile layer to extract some tiles from
Extent	EXTENT	[extent]	Specify the spatial extent of the downloaded area. It will internally be extended to a multiple of the tile size. Available methods are: Calculate from layer…: uses extent of a layer loaded in the current project Calculate from layout map…: uses extent of a layout map item in the active project Calculate from bookmark…: uses extent of a saved bookmark Use map canvas extent Draw on canvas: click and drag a rectangle delimiting the area to take into account Enter the coordinates as xmin, xmax, ymin, ymax
Maximum zoom level to download	MAX_ZOOM	[number] Default: 10	Defines how far to zoom in and fetch data from the tiles
Tile limit	TILE_LIMIT	[number] Default: 100	Maximum number of tiles to download, considering the zoom levels and the extent.
Вывод	OUTPUT	[vector tiles] Default: [Save to temporary file]	Specification of the output vector tile file. One of: Сохранить во временный файл Save to File…

Результаты

Ярлык	Имя	Тип	Описание
Вывод	OUTPUT	[vector tiles]	A local vector tile file storing the downloaded tiles.

Код на Python

Algorithm ID: native:downloadvectortiles

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.

28.1.26.2. 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.

28.1.26.3. 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.