Search Feature Definition
Feature Description
Search feature definition allows querying basic definitions and attribute definitions of features. Through this function, you can input object abbreviations or names to quickly check if the feature definition exists in the current software, and obtain related information such as codes, contained fields, and relevant explanations. Application scenarios include:
- Verifying standard compliance: Validate whether feature definitions and attributes conform to specifications;
- Reference lookup: Review detailed specifications of specific features to ensure accurate understanding during operations or design;
- Troubleshooting: Confirm potential deviations in feature definitions when abnormal object information is detected in chart data.
Steps
Search Feature Definition
- Go to the Chart Tab -> Extend Feature group -> Click the Search Feature Definition button.
- The search feature definition panel contains Standard type, Object, and Description.
- Standard type:
- S-57(3.1): The international standard for electronic charts, released by IHO in 2000 with version 3.1.
- CJ-57(JTS 195-3-2019): China's inland electronic chart standard issued by the Ministry of Transport, focusing on inland waterways with standard code JTS 195-3-2019.
- IENC(2.4): Inland ENC standard (Inland Electronic Navigational Chart) released by IEHG (Inland ENC Harmonization Group) in 2013 (version 2.4). Based on S-57 data transfer standards, it extends capabilities to encode unique inland waterway features such as fleeting areas, lock walls, and casino boats - elements not covered in maritime-oriented S-57 standards.
- Object: Select target features from the list or search by entering feature names in the search box.
- Description: Displays relevant details in the description box after selecting a feature. For example, searching for light beacon shows object acronym, code, attribute fields, and display instructions (simple/complex point display) in the Description box.
- Standard type:
Search Attribute Definition
- Go to the Chart Tab -> Extend Feature group -> Search Feature Definition dropdown -> Click the Search Attribute Definition button.
- The search attribute definition panel includes Standard type, Field with Remarks, and Optional Value with Remarks.
- Standard type: Consistent with search feature definition.
- Field and Remarks: Display fields contained in features and their explanations. Unlike feature definition search, this focuses on field-level information.
- Optional Value and Remarks: If a field has selectable values, the list shows these values with detailed remarks (ID, definition, source, etc.) on the right. For instance, searching light under light beacon category.
Related Topics