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.
Month: June 2015
![What is Map Algebra? [Raster Math]](https://gisgeography.com/wp-content/uploads/2015/06/Map-Algebra-Logo-1-300x194.png){kind=logo}
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!
Smallworld by General Electric (GE) Review
GE has a long, successful track record in utilities and network infrastructure. Because of this, Smallworld has value-added tools specifically for networks.
Manifold GIS Systems: Software Review
Manifold GIS has more or less the full capabilities of the bigger GIS software suites. But the key is their focus on speed and a low price tag.