DLG, DRG and DOQ: USGS GIS Formats
Over the years, the USGS has been a driving force in the production of GIS data. The USGS formats we explore are DLG, DRG and DOQ.
Author: GISGeography
We help you learn Geographic Information Systems and remote sensing
GIS Analyst Job: What to Expect
GIS analysts are well-rounded, tech-saavy spatial individuals with a wide range of skills. They are multi-tasking, multi-disciplinary and fast-on-their-feet.
uDig – User-friendly Desktop Internet GIS (Review)
The focus of uDig (User-friendly Internet GIS) is placed on database viewing and editing as well as a rich collection of GIS functionality.
Geodetic Datums: NAD 27, NAD 83 and WGS84
Ellipsoids, survey benchmarks and triangulation – these are the ingredients for geodetic datums. NAD27, NAD83 and WGS84 are common datums in North America.
GIS Online Certificate: Charting a Course in GIS
Imagine you can earn a GIS online certificate at some of the best institutes in the world without leaving your country… or even the comfort of your own home.
Degrees/Minutes/Seconds (DMS) vs Decimal Degrees (DD)
We can find any location on Earth using latitude and longitude coordinates. And we measure those coordinates with decimal degrees or degrees/minutes/seconds
Capitalizing First Letters with Python in ArcGIS
If your letters and words are all uppercase or lowercase in a field, and you want to capitalize the first letter of each word, use this Python code block.
What Is Selective Availability in GPS?
When selective availability was enabled, this added 50 meters of error horizontally and 100 meters vertically to GPS signals.
Greenwich Meridian (Prime Meridian)
The Greenwich Meridian (or Prime Meridian) is a zero degrees longitudinal It is the start-point which we measure 180 degrees east and west.
GIS Dictionary – Geospatial Definition Glossary
From A to Z, we deliver stunning visualizations and meanings with the GIS Dictionary – Definition Glossary. Sharpen your skills with new GIS terminology.