engine {mapme.biodiversity}

Function to select processing engines

Description

check_engine() checks if an extraction engine for zonal vector-raster operations is supported by the backend.

check_stats checks if one or multiple statistics are supported for zonal vector-raster extraction by the backend.

select_engine extracts zonal vector-raster statistics for supported engine and for one or more statistics. Columns are named according to the argument name plus the respective stat. Both portfolio and asset modes are supported.

Usage

check_engine(queried_engine)

check_stats(queried_stats)

select_engine(x, raster, stats, engine, name = NULL, mode = "asset")

Arguments

queried_engine

A character vector of length one indicating the engine to check for.

queried_stats

A character vector with statistic names to be checked if they are supported by the backend

x

An sf object representing a portfolio.

raster

An terra SpatRaster from which values are to be extracted.

stats

A character vector of statistics to aggregate the raster values with.

engine

A character vector of length one specifying the engine to be used for the extraction.

name

A character vector indicating the name to append to the columns names.

mode

A character vector indicating in which mode to conduct the extraction (e.g. asset-wise or for the whole portfolio at once).

Value

check_engine() returns the character of the queried engine, if supported. Throws an error otherwise.

check_stats returns a character vector of supported statistics. Throws an error if any of the queried statistics is not supported.

select_engine returns a tibble.