GIS Data
This category contains introductory text about GIS data such as types of error in GIS datasets, types of GIS data (raster and vector), and metadata.
Detecting Surface Change and Avalanche Mapping
Due to the precise measurements take can be taking from InSAR, changes in land movements can be detected as small as a few millimeters.
WhatWasThere – Augmented Reality
WhatWasThere is an augmented reality application that features a growing online database of geolocated historical photos. You can search for photos ...
Satellite Data on Ocean Waves
The GlobWave project from the European Space Agency consolidates data on ocean waves from 11 different satellite instruments that have been ...
Tracking Ash Plumes
Data pulled from several satellites has been put to use in understanding the behavior of ash plumes from the recent ...
Making Maps in the Dark
Bluesky International, an aerial survey company, utilizes advanced thermal survey equipment to accurately measure heat loss from buildings and structures across the UK at night.
Satellite imagery
Digital imagery can greatly enhance a GIS. Part of the raster data types, imagery is a powerful visual aid and ...
Geocoding Shortcut: Google Maps to ArcMap
Geocoding a dataset to produce a georeferenced layer requires access to a basemap to which the location data is tied. ...
Global Forest Heights
Where are the tallest forests in the world? NASA has an article on the first global map of the world's forest heights. The map was created with data collected by NASA's ICESat, Terra, and Aqua satellites.
Six Best Sources for Local Land Use/Land Cover GIS Data
Guest article by Kristen Carney and Aaron Herman of Cubit. This article is a follow-up on “National Land Cover Data Set: When ...
National Land Cover Data Set: When There’s No Local Land Use GIS data
Guest article by Kristen Carney and Aaron Herman of Cubit. Finding land use land cover data is a pain. Unless your ...
Mapping Out Geotagged Photos
These cartographers have mapped out geotagged photos to show areas where the most pictures by tourists have been taken.
Ordnance Survey Data to be Made Freely Available
The UK's Ordnance Survey will "will open up its data relating to electoral and local authority boundaries, postcode areas and mid scale mapping information."
Mapping via Cell Phone in Brazil
A Brazilian non-profit by the name of Rede Jovem (meaning roughly “Youth Net”) is helping to map the slums or ...
First American Spatial Solutions and Parcels
FASS has promoted their ParcelPoint® GIS database and associated technologies, featuring a nationwide parcel database with over 120 million parcels, now approaching 122 million, as highlighted by their vice president and general manager, Scott Little.
NASA Drone Mapping Earthquake Faults
Wired has a pictorial on the latest effort by NASA to map California’s earthquake faults: In hopes of understanding California’s ...
LiDAR Resources
Find resources, tutorials and tools for working with LIDAR (Light Detection and Ranging) elevation data, particularly within the GIS environment.
Topographic Map of the Earth Released
NASA has release of the most complete topographic data of the earth with 99% of the surface mapped.
Five Steps to More “Interoperable” CADD Data
Paul Bartsch of the Spatial Tips site shares some tips on working with CADD data to make it more “GIS ...
Ancient Tree Hunt – Mapping Trees in the United Kingdom
The Ancient Tree Hunt seeks to merge antique and modern mapping by using georeferenced maps to identify and protect ancient trees across the United Kingdom
Spatial Data Quality: An Introduction
Data quality is the degree of data excellency that satisfy the given objective. In other words, completeness of attributes in ...
Volunteered Geography
Volunteered Geographic Information (VGI) represents a transformative approach to collecting and analyzing geographic data. This concept, rooted in the participatory ...
New Perspectives on Urban Land Use Change
As Population Grows, So Do Urban Areas New Perspectives on Urban Land Use Change Over 300 million Americans have to live ...
Methods for Creating Spatial Databases
There are several ways in which to bring spatial data into a GIS. This article provides a brief overview of some of the more common methods for creating vector GIS data.
Orthophotos and GIS
Aerial photographs play an important role in GIS data acquisition and visualization. First, they help provide a solid visual effect. ...