GDAL conversion¶

Descripción¶

<colocar la descripción del algoritmo aquí>

Parametros¶

Capa de entrada [raster]

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Numero de banda [number]

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Predeterminado: 1

Salidas¶

Archivo de salida [table]

<colocar aquí la descripción de la salida>

Uso de la consola¶

processing.runalg('gdalogr:gdal2xyz', input, band, output)

Ver también¶

Descripción¶

Convert an 8bit paletted image to 24bit RGB

This utility will convert a pseudocolor band on the input file into an output RGB file of the desired format.

Parametros¶

Capa de entrada [raster]

Input 8bit raster image

Band to convert [selection]

Band to convert to RGB

Opciones:

• 0 — 1
• 1 — 2
• 2 — 3
• 3 — 4
• 4 — 5
• 5 — 6
• 6 — 7
• 7 — 8
• 8 — 9
• 9 — 10
• 10 — 11
• 11 — 12
• 12 — 13
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• 16 — 17
• 17 — 18
• 18 — 19
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• 23 — 24
• 24 — 25

Predeterminado: 0

Salidas¶

Capa de salida [raster]

24bit RGB raster image

Uso de la consola¶

processing.runalg('gdalogr:pcttorgb', input, nband, output)

Ver también¶

GDAL pct2rgb utility

Descripción¶

Creates vector polygons for all connected regions of pixels in the raster sharing a common pixel value. Each polygon is created with an attribute indicating the pixel value of that polygon. The algorithm is derived from the GDAL polygonize utility .

Parametros¶

Capa de entrada [raster]

Input raster layer.

Nombre del campo de salida [string]

Defines the field name in which the attributes of the connected regions are entered. If no field name is defined the name will be ‘DN’.

Predeterminado: DN

Salidas¶

Capa de salida [vector]

Output vector layer. Default format is *.shp .

Uso de la consola¶

processing.runalg('gdalogr:polygonize', input, field, output)

Ver también¶

Descripción¶

Converts vector geometries (points, lines and polygons) into a raster image. The algorithm is derived from the GDAL rasterize utility .

Parametros¶

Capa de entrada [vector: cualquiera]

Input vector layer with point, line or polygon geometries.

Attribute field [tablefield: any]

Defines the attribute field from which the attributes for the pixels should be chosen.

Write values inside an existing raster layer(*) [boolean]

If activated writes the results into an existing raster layer.

Predeterminado: False

Set output raster size (ignored if above option is checked) [selection]

If the above option is not checked either the output size is in pixels (0) or the output resolution is in map units per pixel (1).

Opciones:

• 0 — Output size in pixels
• 1 — Output resolution in map units per pixel

Predeterminado: 1

Horizontal [number]

Sets the horizontal resolution of the output raster.

Default: 100.0

Vertical [number]

Sets the vertical resolution of the output raster.

Default: 100.0

Raster type [selection]

Defines the type of the resulting raster image.

Opciones:

• 0 — Byte
• 1 — Int16
• 2 — UInt16
• 3 — UInt32
• 4 — Int32
• 5 — Float32
• 6 — Float64
• 7 — CInt16
• 8 — CInt32
• 9 — CFloat32
• 10 — CFloat64

Predeterminado: 0

Salidas¶

Output layer: mandatory to choose an existing raster layer if the (*) option is selected [raster]

Output raster layer. Give in here the name of the raster layer in which the results should be written (if this option is used).

Uso de la consola¶

processing.runalg('gdalogr:rasterize', input, field, writeover, dimensions, width, height, rtype, output)

Ver también¶

Descripción¶

Converts a 24bit RGB image into a 8bit paletted. Computes an optimal pseudo-color table for the given RGB-image using a median cut algorithm on a downsampled RGB histogram. Then it converts the image into a pseudo-colored image using the color table. This conversion utilizes Floyd-Steinberg dithering (error diffusion) to maximize output image visual quality. If you want to classify a raster map and want to reduce the number of classes it can be helpful to downsample your image with this algorithm before. The algorithm is derived from the GDAL rgb2pct utility .

Parametros¶

Capa de entrada [raster]

Input RGB image raster.

Number of colors [number]

The number of colors the resulting image will contain. A value from 2-256 is possible.

Default: 2

Salidas¶

Capa de salida [raster]

8-bit output raster.

Uso de la consola¶

processing.runalg('gdalogr:rgbtopct', input, ncolors, output)

Ver también¶

Descripción¶

<colocar la descripción del algoritmo aquí>

Parametros¶

Capa de entrada [raster]

<colocar la descripción de parámetros aquí>

Set the size of the output file (In pixels or %) [number]

<colocar la descripción de parámetros aquí>

Predeterminado: 100

Output size is a percentage of input size [boolean]

<colocar la descripción de parámetros aquí>

Por defecto: True

Nodata value, leave as none to take the nodata value from input [string]

<colocar la descripción de parámetros aquí>

Default: none

Expand [selection]

<colocar la descripción de parámetros aquí>

Opciones:

• 0 — none
• 1 — gray
• 2 — rgb
• 3 — rgba

Predeterminado: 0

Output projection for output file [leave blank to use input projection] [crs]

<colocar la descripción de parámetros aquí>

Default: None

Subset based on georeferenced coordinates [extent]

<colocar la descripción de parámetros aquí>

Por defecto: 0,1,0,1

Copy all subdatasets of this file to individual output files [boolean]

<colocar la descripción de parámetros aquí>

Predeterminado: False

Additional creation parameters [string]

Opcional

<colocar la descripción de parámetros aquí>

Default: (not set)

Output raster type [selection]

<colocar la descripción de parámetros aquí>

Opciones:

• 0 — Byte
• 1 — Int16
• 2 — UInt16
• 3 — UInt32
• 4 — Int32
• 5 — Float32
• 6 — Float64
• 7 — CInt16
• 8 — CInt32
• 9 — CFloat32
• 10 — CFloat64

Predeterminado: 5

Salidas¶

Capa de salida [raster]

<colocar aquí la descripción de la salida>

Uso de la consola¶

processing.runalg('gdalogr:translate', input, outsize, outsize_perc, no_data, expand, srs, projwin, sds, extra, rtype, output)

Ver también¶