Spatial Analysis

Coastline paradoxAn example of the coastline paradox. If the coastline of Great Britain is measured using units 100 km (62 mi) long, then the length of the coastline is approximately 2,800 km (1,700 mi). With 50 km (31 mi) units, the total length is approximately 3,400 km (2,100 mi), approximately 600 km (370 mi) longer.

GIS Data and the Coastline Paradox

Imagine that you’re taking a GIS class and your instructor tasks everyone with coming up with the answer to, “what is the length of the coastline of Maine?”  Everyone downloads a different GIS data set to calculate the length and everyone comes back with a completely different answer to that […]

GIS Data

Understanding Scale

Understanding Scale

Scale is the relationship that the depicted feature on map has to its actual size in the real word (more: map scale).  All maps are modeled representations of the real world and therefore the features are reduced in size when mapped.  In other words, scale is the measurement of the […]