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Author: GISGeography

We help you learn Geographic Information Systems and remote sensing

A Complete Guide to LiDAR: Light Detection and Ranging

How would you like to wave your magic wand and find out how far everything is away from you? No magic wands necessary. This is how LiDAR works.

27 Differences Between ArcGIS and QGIS

It’s a head-to-head GIS software showdown with the star-studded lineup in the GIS industry- ArcGIS vs QGIS. Discover the differences between ArcGIS and QGIS

Survey Benchmark Monument Locations

If you’re serious about geocaching, than you’ve probably heard of benchmark hunting. A survey benchmark is a disk in the ground with a latitude & longitude.

A Complete Guide to TIGER GIS Data

TIGER GIS data has transformed the GIS environment because it was the first nationwide digital map. It stimulated projects like MapQuest, Yahoo & Google.

QGIS 2 Review (Quantum GIS)

In this QGIS 2 review, we see how this open source GIS software stacks up against others in mapping, editing, analysis, and data management.

Your GIS Workstation – What to Upgrade?

Data storage, crisp graphic cards, powerful processing and input and output devices – these harware components are essential to a GIS workstation.

MAUP – Modifiable Areal Unit Problem

The modifiable areal unit problem (MAUP) is a statistical bias that occurs when you aggregate point data such as the scale and zonal effect.

Magnetic North vs Geographic (True) North Pole

The Magnetic North Pole is a point in Northern Canada where the northern lines of attraction enter the Earth. Compass needles point to the magnetic north.

What is Map Algebra? [Raster Math]

Map algebra is a cell-by-cell combination of stacked raster grids. It uses math-like functions with arithmetic, statistics and trigonometry operators.

Landsat Program: 50+ Years Archive of Earth

Imagine being able to rewind forty years back in time. For any given place and time. Then, see how much it’s changed. You can through the Landsat Program!