Visual analysis best practices

This article outlines simple techniques for making data visualisation useful and aesthetically pleasing. It does not provide instructions for building visualisations, but provides tips for making visualisations more effective. The difference between a good visualisation and a great one is that a great visualisation helps you understand more about the data more quickly. There are […]

Manned lidar versus drone lidar

Manned lidar has been widely used for roughly twenty years and drone lidar recently has become a new tool in the geo-toolbox. Which should you use? When is it a good time to use drone lidar, or should you continue to use manned lidar? Is drone lidar better? When is drone lidar better? Is drone […]

Mapping endangered mammals for conservation

The Endangered Wildlife Trust (EWT) and SANBI, in collaboration with multiple partners, recently revised the 2004 national Red List of Mammals, a list which helps to identify regional populations that are of global importance for the conservation of the species. Mapping is a key aspect of the red listings process, with the below article providing […]

Automating photogrammetry with coded targets

This article looks at what coded targets are, when and why they are useful, how they compare with smart points, and provides examples of applications. Since its introduction during World War II, photogrammetric measurement has relied on humans manually identifying points in photographs and matching them to the same points in other photographs. The advent […]

Guidelines for coastal lidar

This article provides guidance to technical and non-technical coastal practitioners regarding the required precision of airborne lidar data for the typical coastal applications, output formats and value-added products. It also touches on issues of flight campaign planning and a national coastal lidar inventory. Highly accurate and detailed topographic information has been identified as being crucial […]

Crowdsourcing the impact of global change on risk and vulnerability

The ability to respond to the impacts of global change on vulnerable populations and assets hinges on the availability of accurate and current information. Through the South African Risk and Vulnerability Atlas, SAEON aims to make the research into characterising and understanding global change accessible and usable to policy and decision makers on a local […]