Author: GISGeography

We help you learn Geographic Information Systems and remote sensing
Map Algebra

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.

Arctic Maps Ocean Floor

5 Maps That Explain the Arctic

Mineral extraction, natural gas as well as potential shipping routes. These Arctic Maps display one of the last great frontiers for human development.

Quantile Classification United States

Quantile Classification in GIS

Quantile classification divides classes so that the total number of features in each class are approximately the same (which is useful for showing rankings)