Creating an area with a custom URL
To create a WMS 2.0 area:
- Obtain a custom WMS URL.
- Load the URL into your GIS application to view your area of interest.
All you need is a rough outline of the area of interest to be able to filter imagery based on survey dates. A precise outline is not required in your WMS 2.0 client for this.
The areas that you define for your custom service are simply instructions on how to build a list of layers in that service. At the time of creation, no requests for imagery within the area of interest are made. Usage is accrued only when you bring the WMS service into your GIS application and add it to the map.
Drawing a larger area does not consume any data; data is consumed only when you browse imagery in your WMS 2.0 client. Regardless of the size of the area you draw, usage is applicable only on the portion of the area that you access.
Creating an area with GeoJSON files
You can open valid GeoJSON files in a WMS client to define your AOI. For instructions on uploading a GeoJSON file, see Custom API Services.
Note that the expected co-ordinate system is WGS84 lat/lon. For more information, see https://gisgeography.com/wgs84-world-geodetic-system/.
Here are a few examples.
GeoJSON file errors
You may encounter errors if you upload a GeoJSON file with:
- Multiple non-overlapping polygons
- Multiple invalid overlapping polygons
- Unsupported non-polygon features
- No content in the GeoJSON file or an invalid file extension.
