CSW（Catalogue Service for the Web）
GISBox is a one-stop 3D GIS data editing, conversion and publishing platform that supports editing in multiple GIS formats such as OSGB/GEOTIFF/RVT, converting to 3DTiles/Terrain and publishing.
Introduction
**CSW **is an OGC-standardized Web service protocol used to publish, discover, and access metadata of geospatial data and services. It supports searches based on keywords, geographic location, and other conditions through HTTP requests.
Data Format Overview
CSW uses XML as the data format, based on the OGC (Open Geospatial Consortium) standard, and the core follows the following specifications:
- Metadata description standard: Adopts the ISO 19115/19139 metadata standard, and uses XML encoding to describe the metadata information of geospatial data and services.
- Protocol implementation: Based on the OGC CSW protocol (such as version 2.0.2), the metadata records in the catalog are made public in XML format, supporting the publication, search and acquisition of metadata.
- Expansion capability: Supports the creation, modification and deletion of metadata through extension mechanisms (such as CSW-T), allowing the content format to be adjusted according to business needs.
Pros
- **Standardization and interoperability: **Follow OGC standards and support cross-platform and cross-system data sharing.
- **Flexible search function: **Supports complex queries based on metadata (such as time range and spatial range).
Cons
- Differences in metadata standardization: The metadata formats provided by different institutions may not be uniform, affecting search efficiency.
- Performance depends on implementation: Service performance depends on the specific implementation (such as GeoServer, pycsw, etc.), and there may be scalability or efficiency issues.
Application Scenario
Sharing and discovery of geospatial data, such as in environmental monitoring, urban planning, disaster response and other scenarios, requires users to quickly locate and obtain multi-source geographic data and services.
Example
- CSW overview.
- CSW overview.
