DNC NGA Data Download

Open the National Geospatial-Intelligence Agency DNC Portal in a browser.

Click on the map at the bottom of the page to select the region to download. NOTE: For many parts of the world, only patches are available for download, rather than the full database. For rendering purposes, the full database is required.

Click the All button in the Library Catalog (on the right hand sidebar).

Click the "Download full library" "check all" box to select all charts for the region.

Click the "Download" button at the bottom of the page. The page may take as long as 2-3 minutes to respond after clicking the button. Be patient.

When the page does respond, click on the link to download a zip archive of the selected charts.

This archive will contain a large number of smaller archives for each chart in the region:

All_Update_Patch_160623134359017.zip
    A0112483.zip
    A0112485.zip
    ...

Unzip the top archive into a directory, then unzip each of the bundled zip archives, overwriting duplicated files.

On Linux/Bash this can be accomplished with:

for file in `find . -name "*.zip"`; do unzip -n $file; done

Now follow the instructions on the [DNC Data](DNC Data) page to render the chart data in Glimpse.