st_as_sf function

Convert a qgis_result object or one of its elements to an sf object

## S3 method for class 'qgis_result'
st_as_sf(x, ...)

## S3 method for class 'qgis_outputVector'
st_as_sf(x, ...)

## S3 method for class 'qgis_outputLayer'
st_as_sf(x, ...)

Arguments

• x: A qgis_result object from qgis_run_algorithm() or a qgis_output* object from one of the qgis_extract_output() functions.
• ...: Arguments passed to sf::read_sf().

Returns

An sf object.

Details

The sf package must be loaded explicitly to use these methods.

Examples

# not running below examples in R CMD check to save time
result <- qgis_run_algorithm(
  "native:buffer",
  INPUT = system.file("longlake/longlake_depth.gpkg", package = "qgisprocess"),
  DISTANCE = 10
)

# most direct approach, autoselecting a `qgis_outputVector` type
# output from the `result` object and reading as sf object:
sf::st_as_sf(result)

# if you need more control, extract the needed output element first:
output_vector <- qgis_extract_output(result, "OUTPUT")
sf::st_as_sf(output_vector)

See Also

Other topics about coercing processing output: qgis_as_raster(), qgis_as_terra(), st_as_stars

Other topics about accessing or managing processing results: qgis_as_raster(), qgis_as_terra(), qgis_clean_result(), qgis_extract_output(), qgis_result_status(), st_as_stars