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24.2.4. Raster miscellaneous

24.2.4.1. Build overviews (pyramids)

To speed up rendering time of raster layers overviews (pyramids) can be created. Overviews are lower resolution copies of the data which QGIS uses depending of the level of zoom.

This algorithm is derived from the GDAL addo utility.

Default menu: Raster ► Miscellaneous

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Įvesties sluoksnis

INPUT

[raster]

Input raster layer

Remove all existing overviews

CLEAN

[boolean]

Numatytas: ne

Removes existing overviews from the raster. By default these are not removed.

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Overview levels

LEVELS

[string]

Default: ‚2 4 8 16‘

Defines the number of overview levels calculated by the original resolution of the input raster layer. By default 4 levels will be taken into consideration.

Resampling method

Pasirinktinis

RESAMPLING

[sąrašas]

Numatytas: 0

Calculates the overviews with a defined resampling method. Possible resampling methods are:

  • 0 – Nearest Neighbour (nearest)

  • 1 – Average (average)

  • 2 – Gaussian (gauss)

  • 3 – Cubic (4x4 kernel) (cubic)

  • 4 – Cubic B-Spline (4x4 kernel) (cubicspline)

  • 5 – Lanczos (6x6 kernel) (lanczos)

  • 6 – Average MP (average_mp)

  • 7 – Average in Mag/Phase Space (average_magphase)

  • 8 – Mode (mode)

Overviews format

Pasirinktinis

FORMAT

[sąrašas]

Numatytas: 0

The overviews can be stored internally, or externally as GTiff or ERDAS Imagine file. By default the overviews are stored in the output raster. Possible formats methods are:

  • 0 – Internal (if possible)

  • 1 – External (GTiff .ovr)

  • 2 – External (ERDAS Imagine .aux)

Additional command-line parameters

Pasirinktinis

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Pyramidized

OUTPUT

[raster]

Output raster layer with overviews

Pythono kodas

Algorithm ID: gdal:overviews

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.

24.2.4.2. Build virtual raster

Builds a VRT (Virtual Dataset) that is a mosaic of the list of input GDAL-supported rasters. With a mosaic you can merge several raster files.

This algorithm is derived from the GDAL buildvrt utility.

Default menu: Raster ► Miscellaneous

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Input layers

INPUT

[raster] [list]

GDAL-supported raster layers.

Resolution

RESOLUTION

[sąrašas]

Numatytas: 0

The output resolution of the mosaic. By default the average resolution of the raster files will be chosen.

Options:

  • 0 — Average (average)

  • 1 — Highest (highest)

  • 2 — Lowest (lowest)

Place each input file into a separate band

SEPARATE

[boolean]

Numatytas: ne

With ‚True‘ you can define that each raster file goes into a separated stacked band in the VRT band.

Allow projection difference

PROJ_DIFFERENCE

[boolean]

Numatytas: ne

Allows that the output bands have different projections derived from the projection of the input raster layers.

Virtual

OUTPUT

[raster]

Numatytas: [Įrašyti į laikiną failą]

Specification of the output raster layer. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Add alpha mask band to VRT when source raster has none

ADD_ALPHA

[boolean]

Numatytas: ne

Adds an alpha mask band to the VRT when the source raster has none.

Override projection for the output file

Pasirinktinis

ASSIGN_CRS

[crs]

Default: Not set

Overrides the projection for the output file. No reprojection is done.

Resampling algorithm

RESAMPLING

[sąrašas]

Numatytas: 0

The resampling algorithm to use. Options:

  • 0 — Nearest Neighbour (nearest)

  • 1 — Bilinear (2x2 kernel) (bilinear)

  • 2 — Cubic (4x4 kernel) (cubic)

  • 3 — Cubic B-Spline (4x4 kernel) (cubicspline)

  • 4 — Lanczos (6x6 kernel) (lanczos)

  • 5 — Average (average)

  • 6 — Mode (mode)

NoData value(s) for input bands (space separated)

Pasirinktinis

SRC_NODATA

[string]

Default: Not set

Space separated NoData value(s) for input band(s)

Additional command-line parameters

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Virtual

OUTPUT

[raster]

Output raster layer

Pythono kodas

Algorithm ID: gdal:buildvirtualraster

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.

24.2.4.3. gdal2tiles

Generates a directory with small tiles and metadata, following the OSGeo Tile Map Service Specification. See also the OpenGIS Web Map Tile Service Implementation Standard. Simple web pages with viewers based on Google Maps, OpenLayers and Leaflet are generated as well. To explore your maps on-line in the web browser, you only need to upload the generated directory onto a web server.

This algorithm also creates the necessary metadata for Google Earth (KML SuperOverlay), in case the supplied map uses EPSG:4326 projection.

ESRI world files and embedded georeferencing is used during tile generation, but you can publish a picture without proper georeferencing too.

This algorithm is derived from the GDAL gdal2tiles utility.

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Įvesties sluoksnis

INPUT

[raster]

GDAL-supported raster layer.

Tile cutting profile

PROFILE

[sąrašas]

Numatytas: 0

One of:

  • 0 — Mercator (mercator)

  • 1 — Geodetic (geodetic)

  • 2 — Raster (raster)

Zoom levels to render

Pasirinktinis

ZOOM

[string]

Default: ‚‘

Web viewer to generate

VIEWER

[enumerate]

Numatytas: 0

One of:

  • 0 — All (all)

  • 1 — GoogleMaps (google)

  • 2 — OpenLayers (openlayers)

  • 3 — Leaflet (leaflet)

  • 4 — None (none)

Title of the map

Pasirinktinis

TITLE

[string]

Default: ‚‘

Copyright of the map

COPYRIGHT

[string]

Default: ‚‘

Output directory

OUTPUT

[folder]

Default: [Save to temporary folder]

Specify the output folder for the tiles. One of:

  • Save to a Temporary Directory

  • Save to Directory

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Resampling method

RESAMPLING

[sąrašas]

Numatytas: 0

The resampling algorithm to use. Options:

  • 0 — Average (average)

  • 1 — Nearest Neighbour (near)

  • 2 — Bilinear (2x2 kernel) (bilinear)

  • 3 — Cubic (4x4 kernel) (cubic)

  • 4 — Cubic B-Spline (4x4 kernel) (cubicspline)

  • 5 — Lanczos (6x6 kernel) (lanczos)

  • 6 — Antialias (antialias)

The spatial reference system used for the source input data

Pasirinktinis

SOURCE_CRS

[crs]

Default: Not set

Transparency value to assign to the input data

Pasirinktinis

NODATA

[numeric: double]

Default: 0.0

URL address where the generated tiles are going to be published

Pasirinktinis

URL

[string]

Default: ‚‘

Google Maps API key (http://code.google.com/apis/maps/signup.html)

Pasirinktinis

GOOGLE_KEY

[string]

Default: ‚‘

Your Google maps API key.

Bing Maps API key (https://www.bingmapsportal.com/)

Pasirinktinis

BING_KEY

[string]

Default: ‚‘

Your Bing maps API key.

Generate only missing files

RESUME

[boolean]

Numatytas: ne

Generate KML for Google Earth

KML

[boolean]

Numatytas: ne

Avoid automatic generation of KML files for EPSG:4326

NO_KML

[boolean]

Numatytas: ne

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Output directory

OUTPUT

[folder]

The output folder (for the tiles)

Pythono kodas

Algorithm ID: gdal:gdal2tiles

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.

24.2.4.4. Merge

Merges raster files in a simple way. Here you can use a pseudocolor table from an input raster and define the output raster type. All the images must be in the same coordinate system.

This algorithm is derived from the GDAL merge utility.

Default menu: Raster ► Miscellaneous

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Input layers

INPUT

[raster] [list]

Input raster layers

Grab pseudocolor table from first layer

PCT

[boolean]

Numatytas: ne

The pseudocolor table from the first layer will be used for the coloring

Place each input file into a separate band

SEPARATE

[boolean]

Numatytas: ne

Place each input file into a separate band

Output data type

DATA_TYPE

[sąrašas]

Default: 5

Defines the format of the output raster file. Options:

  • 0 — Byte (Eight bit unsigned integer (quint8))

  • 1 — Int16 (Sixteen bit signed integer (qint16))

  • 2 — UInt16 (Sixteen bit unsigned integer (quint16))

  • 3 — UInt32 (Thirty two bit unsigned integer (quint32))

  • 4 — Int32 (Thirty two bit signed integer (qint32))

  • 5 — Float32 (Thirty two bit floating point (float))

  • 6 — Float64 (Sixty four bit floating point (double))

  • 7 — CInt16 (Complex Int16)

  • 8 — CInt32 (Complex Int32)

  • 9 — CFloat32 (Complex Float32)

  • 10 — CFloat64 (Complex Float64)

  • 11 — Int8 (Eight bit signed integer (qint8))

Available options depend on the GDAL version built with QGIS (see Help ► About menu)

Merged

OUTPUT

[raster]

Numatytas: [Įrašyti į laikiną failą]

Specification of the output raster layer. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Input pixel value to treat as „NoData“

Pasirinktinis

NODATA_INPUT

[number: double]

Default: Not set

Ignores pixels from files being merged in with this pixel value

Assign specified „NoData“ value to output

Pasirinktinis

NODATA_OUTPUT

[number: double]

Default: Not set

Assigns the specified NoData value to output bands.

Additional creation options

Pasirinktinis

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 (|).

Additional command-line parameters

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Merged

OUTPUT

[raster]

Output raster layer

Pythono kodas

Algorithm ID: gdal:merge

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.

24.2.4.5. Pansharpening

Performs a pan-sharpening operation. It can create a „classic“ output dataset (such as GeoTIFF), or a VRT dataset describing the pan-sharpening operation.

See GDAL Pansharpen.

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Spectral dataset

SPECTRAL

[raster]

Input (spectral) raster layer

Panchromatic dataset

PANCHROMATIC

[raster]

Input (panchromatic) raster layer

Output

OUTPUT

[raster]

Numatytas: [Įrašyti į laikiną failą]

Specify the output (sharpened) raster layer. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Resampling algorithm

RESAMPLING

[sąrašas]

Default: 2

The resampling algorithm to use. Options:

  • 0 — Nearest Neighbour (nearest)

  • 1 — Bilinear (2x2 kernel) (bilinear)

  • 2 — Cubic (4x4 kernel) (cubic)

  • 3 — Cubic B-Spline (4x4 kernel) (cubicspline)

  • 4 — Lanczos (6x6 kernel) (lanczos)

  • 5 — Average (average)

Additional creation options

Pasirinktinis

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 (|).

Additional command-line parameters

Pasirinktinis

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Output

OUTPUT

[raster]

Output (sharpened) raster layer

Pythono kodas

Algorithm ID: gdal:pansharp

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.

24.2.4.6. Raster calculator

Command line raster calculator with numpy syntax. Use any basic arithmetic supported by numpy arrays, such as +, -, *, and / along with logical operators, such as >. Note that all input rasters must have the same dimensions, but no projection checking is performed.

See the GDAL Raster Calculator utility docs.

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Input layer A

INPUT_A

[raster]

First input raster layer (mandatory)

Number of raster band for A

BAND_A

[raster band]

Band for input layer A (mandatory)

Input layer B

Pasirinktinis

INPUT_B

[raster]

Default: Not set

Second input raster layer

Number of raster band for B

Pasirinktinis

BAND_B

[raster band]

Band for input layer B

Input layer C

Pasirinktinis

INPUT_C

[raster]

Default: Not set

Third input raster layer

Number of raster band for C

Pasirinktinis

BAND_C

[raster band]

Band for input layer C

Input layer D

Pasirinktinis

INPUT_D

[raster]

Default: Not set

Fourth input raster layer

Number of raster band for D

Pasirinktinis

BAND_D

[raster band]

Band for input layer D

Input layer E

Pasirinktinis

INPUT_E

[raster]

Default: Not set

Fifth input raster layer

Number of raster band for E

Pasirinktinis

BAND_E

[raster band]

Band for input layer E

Input layer F

Pasirinktinis

INPUT_F

[raster]

Sixth input raster layer

Number of raster band for F

Pasirinktinis

BAND_F

[raster band]

Default: Not set

Band for input layer F

Calculation in gdalnumeric syntax using +-/* or any numpy array functions (i.e. logical_and())

FORMULA

[string]

Default: ‚‘

The calculation formula. Examples:

  • A*(A>0) — outputs the value of the raster A if the value of A is greater than 0. If not, outputs 0.

  • A*(A>0 and A>B)— outputs the value of A if that value is bigger than 0 and bigger than the value of B. If not, outputs 0.

  • A*logical_or(A<=177,A>=185) — outputs the value of A if A <= 177 or A >= 185. If not, outputs 0.

  • sqrt(A*A+B*B) — Outputs the square root of the sum of the value of A squared and the value of B squared.

Set output NoData value

Pasirinktinis

NO_DATA

[number: double]

Default: Not set

Value to use for NoData

Handling of extent differences

EXTENT_OPT

[sąrašas]

Numatytas: 0

Determines how to handle rasters with different extents. Only available with GDAL 3.3+. Supported options are:

  • 0 — Ignore

  • 1 — Fail

  • 2 — Union

  • 3 — Intersect

Output extent

Pasirinktinis

INPUT

[extent]

Custom extent of the output raster. Only available with GDAL 3.3+.

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

Output raster type

RTYPE

[sąrašas]

Default: 5

Defines the data type of the output raster file. Options:

  • 0 — Byte (Eight bit unsigned integer (quint8))

  • 1 — Int16 (Sixteen bit signed integer (qint16))

  • 2 — UInt16 (Sixteen bit unsigned integer (quint16))

  • 3 — UInt32 (Thirty two bit unsigned integer (quint32))

  • 4 — Int32 (Thirty two bit signed integer (qint32))

  • 5 — Float32 (Thirty two bit floating point (float))

  • 6 — Float64 (Sixty four bit floating point (double))

  • 7 — CInt16 (Complex Int16)

  • 8 — CInt32 (Complex Int32)

  • 9 — CFloat32 (Complex Float32)

  • 10 — CFloat64 (Complex Float64)

  • 11 — Int8 (Eight bit signed integer (qint8))

Available options depend on the GDAL version built with QGIS (see Help ► About menu)

Calculated

OUTPUT

[raster]

Numatytas: [Įrašyti į laikiną failą]

Specify the output (calculated) raster layer. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Additional creation options

Pasirinktinis

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 (|).

Additional command-line parameters

Pasirinktinis

EXTRA

[string]

Default: ‚‘

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Calculated

OUTPUT

[raster]

Output (calculated) raster layer

Pythono kodas

Algorithm ID: gdal:rastercalculator

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.

24.2.4.7. Raster information

The gdalinfo program lists various information about a GDAL supported raster dataset.

This algorithm is derived from the GDAL info utility.

Default menu: Raster ► Miscellaneous

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Įvesties sluoksnis

INPUT

[raster]

Input raster layer

Force computation of the actual min/max values for each band

MIN_MAX

[boolean]

Numatytas: ne

Forces computation of the actual min/max values for each band in the dataset

Read and display image statistics (force computation if necessary)

STATS

[boolean]

Numatytas: ne

Reads and displays image statistics. Forces computation if no statistics are stored in an image.

Suppress GCP info

NO_GCP

[boolean]

Numatytas: ne

Suppresses ground control points list printing. It may be useful for datasets with huge amount of GCPs, such as L1B AVHRR or HDF4 MODIS which contain thousands of them.

Suppress metadata info

NO_METADATA

[boolean]

Numatytas: ne

Suppresses metadata printing. Some datasets may contain a lot of metadata strings.

Layer information

OUTPUT

[html]

Numatytas: [Įrašyti į laikiną failą]

Specify the HTML file for output. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Additional command-line parameters

Pasirinktinis

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Layer information

OUTPUT

[html]

The HTML file containing information about the input raster layer

Pythono kodas

Algorithm ID: gdal:gdalinfo

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.

24.2.4.8. Retile

Retiles a set of input tiles. All the input tiles must be georeferenced in the same coordinate system and have a matching number of bands. Optionally pyramid levels are generated.

This algorithm is derived from the GDAL Retile utility.

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Input files

INPUT

[raster] [list]

The input raster files

Tile width

TILE_SIZE_X

[number: integer]

Default: 256

Width of the tiles in pixels (minimum 0)

Tile height

TILE_SIZE_Y

[number: integer]

Default: 256

Height of the tiles in pixels (minimum 0)

Overlap in pixels between consecutive tiles

OVERLAP

[number: integer]

Numatytas: 0

Number of pyramid levels to build

LEVELS

[number: integer]

Default: 1

Minimum: 0

Output directory

OUTPUT

[folder]

Default: [Save to temporary folder]

Specify the output folder for the tiles. One of:

  • Save to a Temporary Directory

  • Save to Directory

CSV file containing the tile(s) georeferencing information

OUTPUT_CSV

[file]

Numatytas: [Praleisti išvestį]

Specify the output file for the tiles. One of:

  • Praleisti išvestį

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Source coordinate reference system

Pasirinktinis

SOURCE_CRS

[crs]

Default: Not set

Resampling method

RESAMPLING

[sąrašas]

Numatytas: 0

The resampling algorithm to use. Options:

  • 0 — Nearest Neighbour (nearest)

  • 1 — Bilinear (2x2 kernel) (bilinear)

  • 2 — Cubic (4x4 kernel) (cubic)

  • 3 — Cubic B-Spline (4x4 kernel) (cubicspline)

  • 4 — Lanczos (6x6 kernel) (lanczos)

Column delimiter used in the CSV file

Pasirinktinis

DELIMITER

[string]

Default: ‚;‘

Delimiter to use in the CSV file containing the tile(s) georeferencing information

Additional creation options

Pasirinktinis

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 (|).

Additional command-line parameters

Pasirinktinis

EXTRA

[string]

Default: ‚‘

Add extra GDAL command line options

Output data type

DATA_TYPE

[sąrašas]

Default: 5

Defines the format of the output raster file. Options:

  • 0 — Byte (Eight bit unsigned integer (quint8))

  • 1 — Int16 (Sixteen bit signed integer (qint16))

  • 2 — UInt16 (Sixteen bit unsigned integer (quint16))

  • 3 — UInt32 (Thirty two bit unsigned integer (quint32))

  • 4 — Int32 (Thirty two bit signed integer (qint32))

  • 5 — Float32 (Thirty two bit floating point (float))

  • 6 — Float64 (Sixty four bit floating point (double))

  • 7 — CInt16 (Complex Int16)

  • 8 — CInt32 (Complex Int32)

  • 9 — CFloat32 (Complex Float32)

  • 10 — CFloat64 (Complex Float64)

  • 11 — Int8 (Eight bit signed integer (qint8))

Available options depend on the GDAL version built with QGIS (see Help ► About menu)

Build only the pyramids

ONLY_PYRAMIDS

[boolean]

Numatytas: ne

Use separate directory for each tile row

DIR_FOR_ROW

[boolean]

Numatytas: ne

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Output directory

OUTPUT

[folder]

The output folder for the tiles.

CSV file containing the tile(s) georeferencing information

OUTPUT_CSV

[file]

The CSV file with georeferencing information for the tiles.

Pythono kodas

Algorithm ID: gdal:retile

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.

24.2.4.9. Tile index

Builds a vector layer with a record for each input raster file, an attribute containing the filename, and a polygon geometry outlining the raster. This output is suitable for use with MapServer as a raster tileindex.

This algorithm is derived from the GDAL Tile Index utility.

Default menu: Raster ► Miscellaneous

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Input files

LAYERS

[raster] [list]

The input raster files. Can be multiple files.

Field name to hold the file path to the indexed rasters

PATH_FIELD_NAME Optional

[string]

Default: ‚location‘

The output field name to hold the file path/location to the indexed rasters.

Store absolute path to the indexed rasters

ABSOLUTE_PATH

[boolean]

Numatytas: ne

Set whether the absolute path to the raster files is stored in the tile index file. By default the raster filenames will be put in the file exactly as they are specified in the command.

Skip files with different projection reference

PROJ_DIFFERENCE

[boolean]

Numatytas: ne

Only files with same projection as files already inserted in the tile index will be inserted. Default does not check projection and accepts all inputs.

Tile index

OUTPUT

[vektorius: poligonas]

Numatytas: [Įrašyti į laikiną failą]

Specify the polygon vector layer to write the index to. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Transform geometries to the given CRS

Pasirinktinis

TARGET_CRS

[crs]

Geometries of input files will be transformed to the specified target coordinate reference system. Default creates simple rectangular polygons in the same coordinate reference system as the input rasters.

The name of the field to store the SRS of each tile

Pasirinktinis

CRS_FIELD_NAME

[string]

The name of the field to store the SRS of each tile

The format in which the CRS of each tile must be written

CRS_FORMAT

[sąrašas]

Numatytas: 0

Format for the CRS. One of:

  • 0 – Auto (AUTO)

  • 1 – Well-known text (WKT)

  • 2 – EPSG (EPSG)

  • 3 – Proj.4 (PROJ)

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Tile index

OUTPUT

[vektorius: poligonas]

The polygon vector layer with the tile index.

Pythono kodas

Algorithm ID: gdal:tileindex

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.

24.2.4.10. Viewshed

Calculates a viewshed raster from an input raster DEM using method defined in Wang2000 for a user defined point.

Parametrai

Baziniai parametrai

Užrašas

Pavadinimas

Tipas

Aprašymas

Įvesties sluoksnis

INPUT

[raster]

Input elevation raster layer

Band number

BAND

[raster band]

Default: 1

The number of the band to use as elevation

Observer location

OBSERVER

[point]

The location of the observer

Observer height

OBSERVER_HEIGHT

[number: double]

Default: 1.0

The altitude of the observer, in the DEM units

Target height

TARGET_HEIGHT

[number: double]

Default: 1.0

The altitude of the target element, in the DEM units

Maximum distance from observer to compute visibility

MAX_DISTANCE

[number: double]

Default: 100.0

Maximum distance from observer to compute visibility, in the DEM units

Output

OUTPUT

[raster]

Numatytas: [Įrašyti į laikiną failą]

Output raster layer. One of:

  • Įrašyti į laikiną failą

  • Įrašyti į failą…

Advanced parameters

Užrašas

Pavadinimas

Tipas

Aprašymas

Additional creation options

Pasirinktinis

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 (|).

Additional command-line parameters

EXTRA

[string]

Default: Not set

Add extra GDAL command line options

Išvestys

Užrašas

Pavadinimas

Tipas

Aprašymas

Output

OUTPUT

[raster]

The raster layer displaying the viewshed.

Pythono kodas

Algorithm ID: gdal:viewshed

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.