How to Download USGS Topo Maps for Free
If you’re looking for topographic maps (contours, place names & hydrography) for the United States, the first place to look is the USGS topo maps series.
Data Sources
What Is Esri Tapestry Segmentation?
Esri’s tapestry segmentation data provides insights on lifestyle choices made by customers helping you make more informative business decisions.
10 Best Free Land Cover/Land Use Data
Over the span of your life, how much has the Earth changed? Quite a bit, but you probably just can’t put a number to it. You actually CAN with land cover.
Choosing Between Personal and File Geodatabases
If you’re a bit confused whether or not to use a file geodatabase (*.gdb) or a personal geodatabase (*.mdb)… Here’s everything you need to know.
TerraPop Environmental & Demographic Data
TerraPop delivers internationally comparable environment and demographic data at a global scale – this includes raster, area-level and micro-data.
Lossless Compression vs Lossy Compression
Lossless compression (like JPEG) retains values and lowers file size. However, lossy compression (like LZ77) reduces file size by eliminating redundancy.
DEM, DSM & DTM: Elevation Models in GIS
We explore the differences between DEM (bare earth), DSM (natural and built environment) and DTM (vector contours and regularly-spaced points).
5 Free Global DEM Data Sources – Digital Elevation Models
Want to elevate your chances of finding a digital elevation model? Sure you do. You should dive into our list of free global DEM data sources.
15 Free Satellite Imagery Data Sources
If you’re searching for free satellite imagery, we rank the best sources of free satellite data from authoritative sources like NASA, USGS and Maxar.
How to Download Free Sentinel Satellite Data
If you want to download Sentinel satellite data, then you’ve come to the right place. We show you step-by-step how to obtain free Sentinel satellite data.