polygonizer: Polygonizer creates a polygon shapefile from a raster layer

In richelbilderbeek/rchipelago: Create Global Maps In Time

Description

Polygonizer creates a polygon shapefile from a raster layer

Usage

polygonizer(x, outshape = NULL, pypath = NULL, readpoly = TRUE,
  fillholes = FALSE, aggregate = FALSE, quietish = TRUE)

Arguments

x:	an R Raster layer, or the file path to a raster file recognised by GDAL
outshape:	the path to the output shapefile (if NULL, a temporary file will be created)
pypath:	the path to gdal_polygonize.py or OSGeo4W.bat (if NULL, the function will attempt to determine the location). OSGeo4W can be downloaded from https://trac.osgeo.org/osgeo4w/
readpoly:	should the polygon shapefile be read back into R, and returned by this function? (logical)
fillholes:	should holes be deleted (i.e., their area added to the containing polygon)
aggregate:	should polygons be aggregated by their associated raster value?
quietish:	should (some) messages be suppressed? (logical)

Author(s)

Sietze Norder

richelbilderbeek/rchipelago documentation built on Nov. 5, 2019, 3:10 a.m.