Data_source (gdal.Gdal.Data

type t

Data source

exception Data_source_error

type driver_t

OGR driver

val get_driver_by_name : string ‑> driver_t option

val get_driver_by_name_exn : string ‑> driver_t

get_driver_by_name name returns the driver associated with name.

val create : ?⁠options:string list ‑> driver_t ‑> string ‑> t option

val create_exn : ?⁠options:string list ‑> driver_t ‑> string ‑> t

create ?options driver name

val copy : ?⁠options:string list ‑> driver_t ‑> t ‑> string ‑> t option

val copy_exn : ?⁠options:string list ‑> driver_t ‑> t ‑> string ‑> t

copy ?options driver src name creates a copy of src using driver.

val of_source : ?⁠write:bool ‑> string ‑> [ `Invalid_source | `Ok of t ]

of_source ?write name opens the source name for access.

Parameter write: defaults to false (read-only)
Parameter name: is source-type specific. See the upstream OGR documentation for more information.
Returns `Invalid_source if name does not represent a valid data source.

val of_source_exn : ?⁠write:bool ‑> string ‑> t

Like of_source but raises Invalid_source if there is an error with the data source.

val destroy : t ‑> unit

destroy t releases the resources associated with t.

val with_source : ?⁠write:bool ‑> string ‑> (t ‑> 'a) ‑> [ `Invalid_source | `Ok of 'a ]

with_source ?write name f opens name and calls f src if name is a valid data source. The data source passed to f will be closed if f returns normally or raises an exception.

This is a wrapper around of_source. See its documentation for a description of the expected arguments.

val with_source_exn : ?⁠write:bool ‑> string ‑> (t ‑> 'a) ‑> 'a

Like with_source but raises Invalid_source if there is an error with the data source.

val get_layer_by_name : t ‑> string ‑> Layer.t

val get_layer : t ‑> int ‑> Layer.t

get_layer* src id returns a Layer.t extracted from src.

val get_layer_count : t ‑> int

get_layer_count src returns the number of layers in src.

val create_layer : ?⁠spatial_reference:Spatial_reference.t ‑> ?⁠geometry_type:Geometry.wkb_t ‑> ?⁠options:string list ‑> t ‑> string ‑> Layer.t option

create_layer ?spatial_reference ?geometry_type ?options ds name creates a layer named name in ds.

Parameter spatial_reference: defaults to no spatial reference.
Parameter geometry_type: defaults to Geometry.wkb_t.Unknown
Parameter options: defaults to an empty list.
Returns Some layer on success or None if the layer could not be created.

val create_layer_exn : ?⁠spatial_reference:Spatial_reference.t ‑> ?⁠geometry_type:Geometry.wkb_t ‑> ?⁠options:string list ‑> t ‑> string ‑> Layer.t

create_layer_exn ?spatial_reference ?geometry_type ?options ds name is like create_layer except that it raises Data_source_error if the layer can not be created.

val copy_layer : ?⁠options:string list ‑> t ‑> Layer.t ‑> string ‑> Layer.t option

copy_layer ?options ds src name copies src to a layer named name in ds.

Parameter options: defaults to an empty list.
Returns Some layer on success or None if the layer could not be copied/created.

val copy_layer_exn : ?⁠options:string list ‑> t ‑> Layer.t ‑> string ‑> Layer.t

copy_layer_exn ?options ds src name is like copy_layer except that it raises Data_source_error if the layer can not be copied.

Module Gdal.Data_source

OGR Data Sources