Polygonize (raster to vector)

Description

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 .

Parameters

Input layer [raster]
Input raster layer.
Output field name [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’.

Default: DN

Outputs

Output layer [vector]
Output vector layer. Default format is *.shp .

Console usage

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

See also