Skip to contents

Read a Parquet file to sf object

st_read_parquet.Rd

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

Value

object of class sf

Details

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

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"))
#> Error in metadata$columns[[col]]$crs$id: $ operator is invalid for atomic vectors

world
#> Error: object 'world' not found
plot(sf::st_geometry(world))
#> Error: object 'world' not found