Understanding Map Scale
Map scale refers to the ratio between the distance on a map and the corresponding distance on the Earth’s surface.
Types of GIS Data Explored: Vector and Raster
This article discussions different types of GIS data in both vector and raster formats.
GDAL: Geospatial Data Abstraction Library
The Geospatial Data Abstraction Library (GDAL) is a set of software tools used by GIS platforms such as ArcGIS, QGIS, and GRASS GIS.
Understanding and mapping ZIP Codes
Resources for accessing ZIP code data. Ben Fry has created zipdecode that shows the location of all the ZIP codes in the United States.
World Bank and Geospatial Data
The World Bank in August 2018 launched the Integrated Geospatial Information Framework, which is seen as a way for GIS data to be provided for governments, NGOs, and companies to make more informed decisions that not only benefit their economies but also enable sustainable development.
Free Urban Planning GIS Book and Exercises
An open access book focusing on the use of GIS in sustainable urban planning and management includes six chapters containing exercises and GIS data.
Free GIS Data Viewers
Free data viewers for a variety of GIS data formats. These viewers allow you to display geographic data as well as perform some basic GIS functions.
GIS File Formats
Listed here are some of the more common file formats along with associated file extension for GIS file types.
Digitizing Errors in GIS
Digitizing in GIS is the process of converting geographic data either from a hardcopy or a scanned image into vector GIS data by tracing the features. Explained in this article are the types of common digitizing errors found when creating geographic data within GIS.
Bhuvan – the Indian Geoportal
The ISRO Bhuvan geoportal is a free resource for high resolution imagery and earth related GIS data of the Indian region. It is easy to use, works on slow browsers and best used for societal and environmental applications. The portal and services are also updated in continuum.
New Online Map Allows the Detailed Scrutinizing of U.S. Households
Demographic trends in the U.S. have always been a tradition and a wealth of information. After all, the United States government conducts an official census … Read more