Walk - Walk Spatial Data

드라이버 단축 이름

Walk

빌드 의존성

ODBC library

Deprecated

GDAL 3.5에서 이 드라이버를 제거할지 고려 중입니다. 해당 포맷의 모든 데이터셋을 더 자주 사용되는 다른 포맷으로 변환할 것을 추천합니다. 이후 GDAL 버전에서 이 드라이버가 필요한 경우, 이 드라이버가 얼마나 중요한지 설명하려면(먼저 기존 티켓을 찾아본 다음) https://github.com/OSGeo/gdal 에서 티켓을 생성하십시오.(그래도 GDAL 프로젝트가 해당 드라이버를 제거할 수도 있습니다.) 퇴출된 드라이버 사용을 활성화하려면 GDAL_ENABLE_DEPRECATED_DRIVER_WALK 환경설정 옵션 / 환경 변수를 YES로 설정해야만 합니다.

OGR optionally supports reading Walk spatial data via ODBC. Walk spatial data is a Microsoft Access database developed by Walkinfo Technologies mainly for land surveying, evaluation, planning, checking and data analysis in China.

Walk .mdb are accessed by passing the file name of the .mdb file to be accessed as the data source name. On Windows, no ODBC DSN is required. On Linux, there are problems with DSN-less connection due to incomplete or buggy implementation of this feature in the MDB Tools package, So, it is required to configure Data Source Name (DSN) if the MDB Tools driver is used (check instructions below).

OGR treats all feature tables as layers. Most geometry types should be supported (arcs and circles are translated into line segments, while other curves are currently converted into straight lines). Coordinate system information should be properly associated with layers. Currently no effort is made to preserve styles and annotations.

Currently the OGR Walk driver does not take advantage of spatial indexes for fast spatial queries.

By default, SQL statements are handled by OGR SQL engine. SQL commands can also be passed directly to the ODBC database engine when SQL dialect is not “OGRSQL”. In that case, the queries will deal with tables (such as “XXXXFeatures”, where XXXX is the name of a layer) instead of layers.

Driver capabilities

지리참조 작업 지원

이 드라이버는 지리참조 작업을 지원합니다.

How to use Walk driver with unixODBC and MDB Tools (on Unix and Linux)

Refer to the similar section of the PGeo driver. The prefix to use for this driver is Walk: