st_read_parquet: Read a Parquet file to 'sf' object

In sfarrow: Read/Write Simple Feature Objects ('sf') with 'Apache' 'Arrow'

Description

Read a Parquet file. Uses standard metadata information to identify geometry columns and coordinate reference system information.

Usage

st_read_parquet(dsn, col_select = NULL, props = NULL, ...)

Arguments

dsn	character file path to a data source
col_select	A character vector of column names to keep. Default is NULL which returns all columns
props	Now deprecated in read_parquet.
...	additional parameters to pass to ParquetFileReader

Details

Reference for the metadata used: https://github.com/geopandas/geo-arrow-spec. These are standard with the Python GeoPandas library.

Value

object of class sf

See Also

read_parquet, st_read

Examples

# load Natural Earth low-res dataset.
# Created in Python with GeoPandas.to_parquet()
path <- system.file("extdata", package = "sfarrow")

world <- st_read_parquet(file.path(path, "world.parquet"))

world
plot(sf::st_geometry(world))

sfarrow documentation built on Oct. 27, 2021, 5:07 p.m.