laspy.vlrs.vlrlist module¶
- class laspy.vlrs.vlrlist.VLRList(*args, **kwargs)[source]¶
Bases:
list
Class responsible for managing the vlrs
- index(value, start: int = 0, stop: Optional[int] = None) int [source]¶
Return first index of value.
Raises ValueError if the value is not present.
- get_by_id(user_id='', record_ids=(None,))[source]¶
Function to get vlrs by user_id and/or record_ids. Always returns a list even if only one vlr matches the user_id and record_id
>>> import laspy >>> from laspy.vlrs.known import ExtraBytesVlr, WktCoordinateSystemVlr >>> las = laspy.read("tests/data/extrabytes.las") >>> las.vlrs [<ExtraBytesVlr(extra bytes structs: 5)>] >>> las.vlrs.get(WktCoordinateSystemVlr.official_user_id()) [] >>> las.vlrs.get(WktCoordinateSystemVlr.official_user_id())[0] Traceback (most recent call last): IndexError: list index out of range >>> las.vlrs.get_by_id(ExtraBytesVlr.official_user_id()) [<ExtraBytesVlr(extra bytes structs: 5)>] >>> las.vlrs.get_by_id(ExtraBytesVlr.official_user_id())[0] <ExtraBytesVlr(extra bytes structs: 5)>
- get(vlr_type: str) List[IKnownVLR] [source]¶
Returns the list of vlrs of the requested type Always returns a list even if there is only one VLR of type vlr_type.
>>> import laspy >>> las = laspy.read("tests/data/extrabytes.las") >>> las.vlrs [<ExtraBytesVlr(extra bytes structs: 5)>] >>> las.vlrs.get("WktCoordinateSystemVlr") [] >>> las.vlrs.get("WktCoordinateSystemVlr")[0] Traceback (most recent call last): IndexError: list index out of range >>> las.vlrs.get('ExtraBytesVlr') [<ExtraBytesVlr(extra bytes structs: 5)>] >>> las.vlrs.get('ExtraBytesVlr')[0] <ExtraBytesVlr(extra bytes structs: 5)>
- extract(vlr_type: str) List[IKnownVLR] [source]¶
Returns the list of vlrs of the requested type The difference with get is that the returned vlrs will be removed from the list
- classmethod read_from(data_stream: BinaryIO, num_to_read: int, extended: bool = False) VLRList [source]¶
Reads vlrs and parse them if possible from the stream
- Parameters:
data_stream (io.BytesIO) – stream to read from
num_to_read (int) – number of vlrs to be read
extended (bool) – whether the vlrs are regular vlr or extended vlr
- Returns:
List of vlrs
- Return type: