KMZ

GIS Data

The country of North Korea (white outline) is utterly dark compared to the surrounding countries. Source: NASA.

North Korea Mapping Oddities

December 20, 2011By Caitlin DempseyGIS Data

A look at the paucity of GIS data and geographic information about North Korea, including on Google Maps.

Land Surface Temperature Anomaly (June 1 - June 30, 2011) image by Jesse Allen, NASA’s Earth Observatory using data courtesy of the MODIS Land Group.

Global Datasets from NASA’s Earth Observatory

August 7, 2011By Caitlin DempseyGIS Data

Global datasets covering observations about the ocean, land, atmosphere, energy, and life are available for exploring and downloading as KMZ or GeoTiff files. The data is processed from MODIS (or Moderate Resolution Imaging Spectroradiometer) which is on the Terra (EOS AM)and Aqua (EOS PM) satellites. The two satellites combined view the entire surface of […]

Elements of a Map

Map elements such as the map frame, legend, and north arrow are parts of what create a map.

Learn GIS for Free

There are a few online options to learn GIS for free. Take advantage of resources that provide you access to free courses from some of the world’s best universities and institutions.

What is GIS?

GIS is a technological field that incorporates geographical features with tabular data in order to map, analyze, and assess real-world problems. The key word to this technology is Geography – this means that some portion of the data is spatial.

Open Source GIS and Freeware GIS Applications

An open source application by definition is software that you can freely access and modify the source code for. Open source projects typically are worked on by a community of volunteer programmers. Open source GIS programs are based on different base programming languages. Three main groups of open source GIS […]

Calculating Polygon Area in ArcMap

Here are the steps for calculating the area of a polygon using ArcGIS.