I/O

GeoDataFrames provides these entry points:

read(fn::AbstractString; kwargs...)
read(driver::AbstractDriver, fn::AbstractString; kwargs...)

write(fn::AbstractString, table; kwargs...)
write(driver::AbstractDriver, fn::AbstractString, table; kwargs...)

read(fn; kwargs...) returns a DataFrame. write(fn, table; kwargs...) writes table and returns fn. The overloads that take a driver select that driver explicitly.

Automatic driver selection

The filename extension selects a driver. Native Julia implementations are used only after their extension package has been imported in the current session. Without an active native extension, the selected driver delegates to ArchGDALDriver. Passing ArchGDALDriver() explicitly always selects that backend.

using GeoDataFrames, GeoArrow  
# now .arrow and .feather files will be read/written using GeoArrow
GeoDataFrames.read("file.arrow")
GeoDataFrames.write("file.arrow", df)

# Manually force the use of ArchGDAL
GeoDataFrames.read(GeoDataFrames.ArchGDALDriver(), "file.arrow")
GeoDataFrames.write(GeoDataFrames.ArchGDALDriver(), "file.arrow", df)

Keyword arguments are passed to the selected driver. Native-driver keyword sets belong to their packages and differ from ArchGDAL's keywords. See the CSV, FlatGeobuf, GeoArrow, GeoJSON, GeoParquet, and Shapefile driver references.