Geospatial Data - 23 of 30

Geospatial Data FAQs - 30 Found

What is digital line graph (DLG) data?

Digital Line Graphs (DLG) are an early GIS vector data product representing cartographic information derived from USGS maps and related sources. While some DLG data is still available through Earth Explorer, the product line has been inactive since the mid 1990s, and has been superceded by more modern GIS datasets.

 

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The Long Term Archive - Digital Line Graphs (DLGs)

 

Tags: Maps, Photographs, Imagery, Stereoscope