shapefile_vector_from_raster: Create vector from a raster.

In HMB3/nenswniche: Rapidly estimate species ranges and intersect with other layers

Create vector from a raster.

Description

This function takes a raster of a shapefile (for example the urban areas of Australia), and creates a shapefile (i.e. a vector). It uses the rmaxent package https://github.com/johnbaums/rmaxent It assumes that the input df is that returned by the prepare_sdm_table function

Usage

shapefile_vector_from_raster(shp_file, prj, agg_var, temp_ras, targ_ras)

Arguments

shp_file	SpatialPolygonsDataFrame - Spdf of spatial units used to aggregate the SDMs (e.g. urban areas of Australia)
prj	CRS object - Local projection for mapping the shapefile (e.g. Australian Albers)
agg_var	Character string - The field name in the shapefile to use for aggregating SDM results (e.g. Urban area codes)
temp_ras	Raster - An existing raster with the same extent, resolution and projection as the maxent models (e.g. Australia)
targ_ras	Raster - An existing raster of the shapefile with the same extent, resolution and projection as the maxent models (e.g. Australia)
sort_var	Character string - The field name in the shapefile to use for sorting (e.g. Urban area names)

HMB3/nenswniche documentation built on Jan. 31, 2023, 11:46 p.m.