November 2016 - GIS Geography

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[ April 26, 2020 ] Lakes and Rivers Map of the United States US Map
[ April 25, 2020 ] State Outlines: Blank Maps of the 50 United States US Map
[ April 21, 2020 ] Satellite Map of USA – United States of America US Map
[ April 21, 2020 ] US Road Map: Interstate Highways in the United States US Map
[ April 19, 2020 ] Map of the United States of America US Map

What is a Geodatabase? Personal vs File Geodatabase

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.

Why Are Rhumb Lines (Loxodromes) a Constant Track Direction? (and not the Shortest Path)

Rhumb lines (or loxodrome) have constant bearings and cross all meridians at the same angle. They are not the shortest distance between 2 points on a sphere

Trilateration vs Triangulation – How GPS Receivers Work

Have you ever wondered how your GPS receiver works? They use a technique called trilateration, which measures distances, not angles as in triangulation.

GISGeography.com

Month: November 2016

What is a Geodatabase? Personal vs File Geodatabase

Why Are Rhumb Lines (Loxodromes) a Constant Track Direction? (and not the Shortest Path)

Trilateration vs Triangulation – How GPS Receivers Work

15 Free Satellite Imagery Data Sources