GIS Data
This category contains introductory text about GIS data such as types of error in GIS datasets, types of GIS data (raster and vector), and metadata.
Find Public GIS Data with Google’s Earth Engine Catalog
Caitlin Dempsey
The Earth Engine Data Catalog lets users search and discover Earth observation public datasets.
A Review of the State of Crowdsourced Geospatial Data
Caitlin Dempsey
A review in the Journal of Remote Sensing provides an updated look at the benefits and concerns when it comes to collaborative geospatial data collection.
Mapping Heat in U.S. Cities
Mark Altaweel
NOAA has been coordinating an effort to map urban heat islands in cities across the United States.
A Guide to Understanding Map Scale in Cartography
Caitlin Dempsey
Map scale refers to the ratio between the distance on a map and the corresponding distance on the Earth's surface.
Overview of Elevation Data
Jeff Oppong
This article reviews some of terminology and types of elevation based datasets available to GIS.