Vertical Datum – Earth’s Elevation Reference Frame
A vertical datum is a reference surface of zero elevation to which heights are referred to. Datums are used to measure height and depth from mean sea level.
Author: GISGeography
We help you learn Geographic Information Systems and remote sensing
GIS Technician Careers: Where Data Meets Maps
The role of GIS technician seems to indicate a lot of digitization, putting together maps, collecting data, and basic maintenance of data.
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 how to obtain free Sentinel satellite data.
Composite Bands: Black and White to Color Imagery
If you want to display rasters in true color, you will have to combine the red, green & blue bands. The ArcGIS Composite Bands tool creates RGB composites.
ArcObjects: UI Development in ArcGIS
ArcObjects is a library of Component Object Models (COM) to build UI components and stand-alone applications on top of the ArcGIS platform.
Spatial Databases – Build Your Spatial Data Empire
From geodatabases to PostGIS, spatial databases have quickly become the primary method of managing spatial data effectively in a GIS.
How To Justify GIS Technology in Business
We give you 5 steps to deliver a GIS business case at your organization because for some organizations it’s hard to imagine without one
GIS Programmer Roles: Bridging Code and Maps
A GIS developer needs to be focused because you’re going to be writing, examining and error-checking code. Learn more about GIS programmers.
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.
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.