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24.1.18. Raster tools

24.1.18.1. Align raster

Aligns raster by resampling it to the same cell size and reprojecting to the same CRS as a reference raster.

Įspėjimas

This algorithm is ONLY available in the Model Designer context. For other contexts, use instead Align rasters.

Parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Įvesties sluoksnis	INPUT	[raster]	Input raster layer to align
Resampling method	RESAMPLING_METHOD	[sąrašas] Numatytas: 0	Method to use for input layer resampling. Available options are: 0 — Nearest Neighbour 1 — Bilinear (2x2 kernel) 2 — Cubic (4x4 kernel) 3 — Cubic B-Spline (4x4 kernel) 4 — Lanczos (6x6 kernel) 5 — Average 6 — Mode 7 — Maximum 8 — Minimum 9 — Median 10 — First quartile (Q1) 11 — Third quartile (Q3)
Rescale values according to the cell size	RESCALE	[boolean] Default: No
Atskaitos sluoksnis	REFERENCE_LAYER	[raster]	A raster layer that will be used to fetch extent, cell size and CRS that will be applied to input layers.
Override reference CRS Pasirinktinis	CRS	[crs]	CRS to be used instead of the reference layer’s
Override reference cell size X Pasirinktinis	CELL_SIZE_X	[numeric: double]	Cell size in X direction to be used instead of the reference layer’s
Override reference cell size Y Pasirinktinis	CELL_SIZE_Y	[numeric: double]	Cell size in Y direction to be used instead of the reference layer’s
Override reference grid offset X Pasirinktinis	GRID_OFFSET_X	[numeric: double]	Offset in X direction to apply to cells grid
Override reference grid offset Y Pasirinktinis	GRID_OFFSET_Y	[numeric: double]	Offset in Y direction to apply to cells grid
Clip to extent Pasirinktinis	EXTENT	[extent]	Specify the extent of the output raster layer. 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
Aligned raster	OUTPUT	[raster]	output raster with pixels resampled

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Aligned raster	OUTPUT	[raster]	output raster with pixels resampled

Pythono kodas

Algorithm ID: native:alignsingleraster

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.

24.1.18.2. Align rasters

Aligns rasters by resampling them to the same cell size and reprojecting to the same CRS as a reference raster.

Įspėjimas

This algorithm is NOT available in the Model Designer context. Use instead Align raster.

Parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Input layers	INPUT	[raster] [list]	List of input raster layers with resampling options associated (filled as a QgsProcessingParameterAlignRasterLayers item — done in GUI by pressing Configure Raster… button for each selected layer): Input layer [string] (inputFile) Full path of the input layer to align Output file [string] (outputFile) Full path of the corresponding aligned output layer Resampling method [enumeration] (resampleMethod) Method to use for input layer resampling. Available options are: 0 — Nearest Neighbour 1 — Bilinear (2x2 kernel) 2 — Cubic (4x4 kernel) 3 — Cubic B-Spline (4x4 kernel) 4 — Lanczos (6x6 kernel) 5 — Average 6 — Mode 7 — Maximum 8 — Minimum 9 — Median 10 — First quartile (Q1) 11 — Third quartile (Q3) Rescale values according to the cell size [boolean] (rescale)
Atskaitos sluoksnis	REFERENCE_LAYER	[raster]	A raster layer that will be used to fetch extent, cell size and CRS that will be applied to input layers.
Override reference CRS Pasirinktinis	CRS	[crs]	CRS to be used instead of the reference layer’s
Override reference cell size X Pasirinktinis	CELL_SIZE_X	[numeric: double]	Cell size in X direction to be used instead of the reference layer’s
Override reference cell size Y Pasirinktinis	CELL_SIZE_Y	[numeric: double]	Cell size in Y direction to be used instead of the reference layer’s
Override reference grid offset X Pasirinktinis	GRID_OFFSET_X	[numeric: double]	Offset in X direction to apply to cells grid
Override reference grid offset Y Pasirinktinis	GRID_OFFSET_Y	[numeric: double]	Offset in Y direction to apply to cells grid
Clip to extent Pasirinktinis	EXTENT	[extent]	Specify the extent of the output raster layer. 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

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Aligned rasters	OUTPUT_LAYERS	[raster] [list]	output rasters with pixels resampled

Pythono kodas

Algorithm ID: native:alignrasters

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.

24.1.18.3. Convert map to raster

Creates a raster image of map canvas content.

A map theme can be selected to render a predetermined set of layers with a defined style for each layer.

Alternatively, a single layer can be selected if no map theme is set.

If neither map theme nor layer is set, the current map content will be rendered. The minimum extent entered will internally be extended to be a multiple of the tile size.

Parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Minimum extent to render (xmin, xmax, ymin, ymax)	EXTENT	[extent]	Specify the extent of the output raster layer. 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
Tile size	TILE_SIZE	[numeric: integer] Default: 1024	Size of the tile of the output raster layer. Minimum value: 64.
Map units per pixel	MAP_UNITS_PER_PIXEL	[numeric: double] Default: 100.0	Pixel size (in map units). Minimum value: 0.0
Make background transparent	MAKE_BACKGROUND_TRANSPARENT	[boolean] Numatytas: ne	Allows exporting the map with a transparent background. Outputs an RGBA (instead of RGB) image if set to True.
Map theme to render Pasirinktinis	MAP_THEME	[sąrašas]	Use an existing map theme for the rendering.
Single layer to render Pasirinktinis	LAYER	[sąrašas]	Choose a single layer for the rendering
Output layer	OUTPUT	[raster] Numatytas: [Įrašyti į laikiną failą]	Specification of the output raster. One of: Įrašyti į laikiną failą Įrašyti į failą…

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Output layer	OUTPUT	[raster]	Output raster layer

Pythono kodas

Algorithm ID: native:rasterize

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.

24.1.18.4. Fill NoData cells

Resets the NoData values in the input raster to a chosen value, resulting in raster dataset with no NoData pixels.

The algorithm respects the input raster data type, e.g. a floating point fill value will be truncated when applied to an integer raster.

Fig. 24.39 Filling NoData values (in grey) of a raster

Parametrai

Baziniai parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Input raster	INPUT	[raster]	The raster to process.
Band number	BAND	[raster band] Default: 1	The band of the raster
Fill value	FILL_VALUE	[numeric: double] Default: 1.0	Set the value to use for the NoData pixels
Output raster	OUTPUT	[raster] Numatytas: [Įrašyti į laikiną failą]	Specification of the output raster. One of: Įrašyti į laikiną failą Įrašyti į failą…

Advanced parameters

Užrašas	Pavadinimas	Tipas	Aprašymas
Creation options Pasirinktinis	CREATE_OPTIONS	[string] Default: ‚‘	For adding one or more creation options that control the raster to be created (colors, block size, file compression…). For convenience, you can rely on predefined profiles (see GDAL driver options section). Batch Process and Model Designer: separate multiple options with a pipe character (|).

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Output raster	OUTPUT	[raster]	The output raster layer with filled data cells.

Pythono kodas

Algorithm ID: native:fillnodata

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.

24.1.18.5. Generate XYZ tiles (Directory)

Generates raster “XYZ” tiles using the current QGIS project as individual images to a directory structure.

Optionally, a Leaflet HTML output file using the generated tiles as a map layer could be created.

Parametrai

Baziniai parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Extent (xmin, xmax, ymin, ymax)	EXTENT	[extent]	Specify the extent of the tiles. 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
Minimum zoom	ZOOM_MIN	[numeric: integer] Default: 12	Minimum 0, maximum 25.
Maximum zoom	ZOOM_MAX	[numeric: integer] Default: 12	Minimum 0, maximum 25.
DPI	DPI	[numeric: integer] Default: 96	Minimum 48, maximum 600.
Background color Pasirinktinis	BACKGROUND_COLOR	[color] Default: QColor(0, 0, 0, 0)	Choose the background color for the tiles
Enable antialiasing	ANTIALIAS	[boolean] Numatytas: Taip	Determines if antialiasing should be enabled
Tile format	TILE_FORMAT	[sąrašas] Numatytas: 0	One of: 0 — PNG 1 — JPG
Quality (JPG only) Pasirinktinis	QUALITY	[numeric: integer] Default: 75	Minimum 1, maximum 100.
Metatile size Pasirinktinis	METATILESIZE	[numeric: integer] Default: 4	Specify a custom metatile size when generating XYZ tiles. Larger values may speed up the rendering of tiles and provide better labelling (fewer gaps without labels) at the expense of using more memory. Minimum 1, maximum 20.
Tile width Pasirinktinis	TILE_WIDTH	[numeric: integer] Default: 256	Minimum 1, maximum 4096.
Tile height Pasirinktinis	TILE_HEIGHT	[numeric: integer] Default: 256	Minimum 1, maximum 4096.
Use inverted tile Y axis (TMS conventions)	TMS_CONVENTION	[boolean] Numatytas: ne
Output directory	OUTPUT_DIRECTORY	[folder] Default: [Save to temporary folder]	Specification of the output directory (for the tiles). One of: Praleisti išvestį Save to a Temporary Directory Save to Directory
Output html (Leaflet) Pasirinktinis	OUTPUT_HTML	[html] Numatytas: [Įrašyti į laikiną failą]	Specification of the output HTML file. One of: Praleisti išvestį Įrašyti į laikiną failą Įrašyti į failą…

Advanced parameters

Užrašas	Pavadinimas	Tipas	Aprašymas
Leaflet HTML output title Pasirinktinis	HTML_TITLE	[string] Numatytas: jokio	HTML <title>-tag used for the Leaflet HTML output file.
Leaflet HTML output attribution Pasirinktinis	HTML_ATTRIBUTION	[string] Numatytas: jokio	Custom map attribution used for the Leaflet HTML output file. HTML links are possible.
Include OpenStreetMap basemap in Leaflet HTML output	HTML_OSM	[boolean] Numatytas: ne	An OpenStreetMap basemap layer (source: https://tile.openstreetmap.org) is included in the Leaflet HTML output file. Proper map attribution is added automatically.

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Output directory	OUTPUT_DIRECTORY	[folder]	Output directory (for the tiles)
Output html (Leaflet)	OUTPUT_HTML	[html]	The output HTML (Leaflet) file

Pythono kodas

Algorithm ID: native:tilesxyzdirectory

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.

24.1.18.6. Generate XYZ tiles (MBTiles)

Generates raster “XYZ” tiles using the current QGIS project as a single file in the “MBTiles” format.

Parametrai

Užrašas	Pavadinimas	Tipas	Aprašymas
Extent (xmin, xmax, ymin, ymax)	EXTENT	[extent]	Specify the extent of the tiles. 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
Minimum zoom	ZOOM_MIN	[numeric: integer] Default: 12	Minimum 0, maximum 25.
Maximum zoom	ZOOM_MAX	[numeric: integer] Default: 12	Minimum 0, maximum 25.
DPI	DPI	[numeric: integer] Default: 96	Minimum 48, maximum 600.
Background color Pasirinktinis	BACKGROUND_COLOR	[color] Default: QColor(0, 0, 0, 0)	Choose the background color for the tiles
Enable antialiasing	ANTIALIAS	[boolean] Numatytas: Taip	Determines if antialiasing should be enabled
Tile format	TILE_FORMAT	[sąrašas] Numatytas: 0	One of: 0 — PNG 1 — JPG
Quality (JPG only) Pasirinktinis	QUALITY	[numeric: integer] Default: 75	Minimum 1, maximum 100.
Metatile size Pasirinktinis	METATILESIZE	[numeric: integer] Default: 4	Specify a custom metatile size when generating XYZ tiles. Larger values may speed up the rendering of tiles and provide better labelling (fewer gaps without labels) at the expense of using more memory. Minimum 1, maximum 20.
Output file (for MBTiles)	OUTPUT_FILE	[file] Numatytas: [Įrašyti į laikiną failą]	Specification of the output file. One of: Praleisti išvestį Įrašyti į laikiną failą Įrašyti į failą…

Išvestys

Užrašas	Pavadinimas	Tipas	Aprašymas
Output file (for MBTiles)	OUTPUT_FILE	[file]	The output file.

Pythono kodas

Algorithm ID: native:tilesxyzmbtiles

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

algoritmo id rodomas, kai užvedate pelę virš algoritmo apdorojimo įrankinėje. parametrų žodynas teikia parametrų pavadinimus ir reikšmes. Daugiau informacijos apie tai, kaip vykdyti apdorojimo algoritmus Pythono konsolėje rasite skyriuje Using processing algorithms from the console.