Handler/writer interface for GeoArrow arrays

Usage

geoarrow_handle(x, handler, size = NA_integer_)

geoarrow_writer(schema)

Arguments

x: An object implementing as_geoarrow_array_stream()
handler: A wk handler
size: The number of elements in the stream or NA if unknown
schema: A nanoarrow_schema

Value

geoarrow_handle(): Returns the result of handler
geoarrow_writer(): Returns a nanoarrow array

Examples

geoarrow_handle(wk::xy(1:3, 2:4), wk::wk_debug_filter())
#> initialize (dirty = 0  -> 1)
#> vector_start: POINT[UNKNOWN] <0x55b932063530> => WK_CONTINUE
#>   feature_start (1): <0x55b932063530>  => WK_CONTINUE
#>     geometry_start (<none>): POINT[UNKNOWN] <0x55b933ae8000> => WK_CONTINUE
#>       coord (1): <0x55b933ae8000> (1.000000 2.000000)  => WK_CONTINUE
#>     geometry_end (<none>)  => WK_CONTINUE
#>   feature_end (1): <0x55b932063530>  => WK_CONTINUE
#>   feature_start (2): <0x55b932063530>  => WK_CONTINUE
#>     geometry_start (<none>): POINT[UNKNOWN] <0x55b933ae8000> => WK_CONTINUE
#>       coord (1): <0x55b933ae8000> (2.000000 3.000000)  => WK_CONTINUE
#>     geometry_end (<none>)  => WK_CONTINUE
#>   feature_end (2): <0x55b932063530>  => WK_CONTINUE
#>   feature_start (3): <0x55b932063530>  => WK_CONTINUE
#>     geometry_start (<none>): POINT[UNKNOWN] <0x55b933ae8000> => WK_CONTINUE
#>       coord (1): <0x55b933ae8000> (3.000000 4.000000)  => WK_CONTINUE
#>     geometry_end (<none>)  => WK_CONTINUE
#>   feature_end (3): <0x55b932063530>  => WK_CONTINUE
#> vector_end: <0x55b932063530>
#> deinitialize
#> NULL
wk::wk_handle(wk::xy(1:3, 2:4), geoarrow_writer(na_extension_wkt()))
#> <nanoarrow_array geoarrow.wkt{string}[3]>
#>  $ length    : int 3
#>  $ null_count: int 0
#>  $ offset    : int 0
#>  $ buffers   :List of 3
#>   ..$ :<nanoarrow_buffer validity<bool>[0][0 b]> ``
#>   ..$ :<nanoarrow_buffer data_offset<int32>[4][16 b]> `0 11 22 33`
#>   ..$ :<nanoarrow_buffer data<string>[33 b]> `POINT (1 2)POINT (2 3)POINT (3 4)`
#>  $ dictionary: NULL
#>  $ children  : list()