Which type of data is not provided by the National Map?

The National Map is a valuable resource that provides a wide array of geospatial data, including orthoimagery, hydrography, and transport networks. Each of these datasets serves a specific purpose and is part of the comprehensive spatial information the National Map aims to offer.

Orthoimagery consists of aerial photographs that have been geometrically corrected to be accurate representations of the Earth's surface, allowing users to utilize them for mapping and analysis. Hydrography includes data pertaining to water bodies and their characteristics, which is essential for understanding and managing water resources. Transport networks encompass information about various transportation infrastructures, such as roads and railways, crucial for transportation planning and logistics.

In contrast, while there are resources out there that provide information about 3D buildings, this specific type of data is not included in the offerings of the National Map. The absence of 3D building data illustrates the National Map's focus on certain types of geospatial information over others. Hence, 3D buildings stand out as the data type not provided by the National Map.