Add Open Data and Basemap

• The window is modeless: the map stays usable while it is open, so an area can be drawn on it and a map-extent area follows the map as you pan. Clicking the ribbon button again brings the open window to the front.
• The form rearranges itself for the chosen Data type and Data source. Only the rows the current choice needs are shown.
• Nothing is downloaded before it is described. Picking a country costs one small metadata request, and the Details panel then shows the publisher, the year, the licence, the feature count and the download size. Add to Map is enabled only once the details are known.
• Data types and sources

• An admin level a country does not publish is listed but greyed out, so the gap is visible.
• Vector data is imported into the project's default geodatabase as a new feature class, named after the Layer name, and the dataset's attribution, licence and source address are written into its metadata.
• Basemaps are added at the bottom of the map. Narrowing the Zoom levels sets the layer's visible scale range. Also keep it permanently saves the tile layer as a layer file in Documents\ArcGIS\KGA Basemaps and adds that folder to Catalog Favorites, so it is available in every project.
• DEM and land cover are requested by area. The Area can be:

• A DEM or land-cover result is a GeoTIFF on its source's own grid, optionally reprojected to the map's coordinate system (bilinear for elevation, nearest-neighbour for land cover). Leave Save to empty to write it to a temporary folder. The file may be named anything, spaces included.
• Elevation and land cover are read with the GDAL library that ships in ArcGIS Pro's Python environment (arcgispro-py3), the same engine the QGIS plugin uses. The Copernicus DEM and ESA WorldCover tiles are Cloud Optimised GeoTIFFs, so only the part inside the area is downloaded, several blocks at a time. Each dataset is published on more than one server (AWS, OpenTopography's SDSC mirror, Microsoft Planetary Computer); the tool times all of them with a 1 MB test read and uses the fastest for the next half hour, because which one is fast depends on where you are.
• Land cover arrives already classified: the GeoTIFF carries the publisher's colour map and an attribute table with lc_code and lc_class, and the layer is labelled by class name. Also add as polygons converts the classes into a polygon feature class in the project geodatabase with the same two fields (up to 60 million pixels).
• Vector downloads are cached under %LOCALAPPDATA%\KGAToolbox\data_cache, so adding the same boundary twice costs one download and the second works offline (as do OpenTopography and Esri land-cover requests for the same area). Refresh re-reads the source ignoring the cached copy; Clear cache frees the space.
• The OpenTopography API key can be kept, encrypted, in Windows Credential Manager with Remember.
• Attribution is required by every source. The Google tile endpoints are not licensed for use outside Google's own APIs; whether a particular use is permitted is the map maker's decision.

1. On the KGA Toolbox tab, in the Data Management group, click Add Open Data and Basemap.
2. Choose a Data type and a Data source.
3. For boundaries, pick the Country and Admin level. For a DEM or land cover, choose the Area — draw it, or pick a layer — and a Dataset or Year.
4. Check the Details panel: publisher, year, licence and download size.
5. Adjust the Layer name if needed and click Add to Map. A progress bar shows the download; Cancel stops it.

Requires an active KGA Toolbox license. The tool validates the license before the window opens. The data itself is published under each source's own licence, which the Details panel shows and the layer metadata records.