PositionIT e-News
 
GIS, GPS, surveying and spatial applications in Southern Africa

     Issue 41, September 2012  

SDI challenges - is South Africa on track?
by Daniel Sebake, Council for Geoscience

Daniel Sebake In order for organisations to work together in collecting and using spatial data, an infrastructure is required to set up the rules of engagement. This so-called spatial data infrastructure (SDI) provides the participants with instructions on the handling and packaging of spatial data (standards) and making data discovery easy so that users can find and use it... (more)
Land surveyors involvement with pre- and post-survey activities
by Karl van Rensburg, Land Tenure Services    

 

Karl van Rensburg Land surveyors should beware of allowing the profession to be marginalised. They need to provide a more complete service and should involve themselves in the town planning activities preceding surveying as well as the post application approval processes... (more)
Improve your geospatial employment prospects
by Chlodwik Rossouw, Latitude Resource     

                            

Chlodwik Rossouw This article is the final of three articles which aimed to assist geospatial professionals or career seekers in searching and applying for their first or next professional geospatial career opportunity... (more)
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Review of GNSS formats for real-time positioning
by Eldar Rubinov, Phil Collier and Simon Fuller, Co-operative Research Centre for Spatial Information, and James Seager, SeaGIS           

This paper reviews several prevalent formats that are used to transmit GNSS data in real-time. This work has initiated from the research on real-time quality control for Network RTK positioning which aims to independently assess the positioning quality of users performing NRTK surveys... (more)
Intelligent location address coding
by Pierre Rossouw, South African Post Office                 

A new postcode system for South Africa is being developed and is to be implemented. This is the eLAND postcode and addressing system, incorporating barcoded location intelligence. It is designed to modernise physical document communications and also to satisfy the service delivery requirements of many stakeholders... (more)
Applying mobile mapping technology to urban inventories
Information from Topcon   

The demand for geographic information is steadily growing, requiring the use of new methods and technologies to register real data and to offer the best available information to users. With this in mind, a pilot project in the Spanish city of San Sebastian was established to apply mobile mapping technology to urban inventories... (more)
Airborne hyperspectral imaging for baseline environmental monitoring
Information from Southern Mapping          

Airborne hyperspectral imaging has been used extensively for locating unexploded ordnance, but the technology's use for environmental baseline auditing is now receiving much global attention... (more)
Cost-effective GIS and spatial analysis for municipalities
by Nic Klopper, 1Map                

This article examines the need for an accessible national address database (NAD) that can be used by the South African GIS community and proposes a solution for how this can be achieved... (more)
OGC standards and cloud computing
by Raj Singh, Open Geospatial Consortium                

This draft Open Geospatial Consortium (OGC) White Paper discusses cloud computing from the perspective of OGC's geospatial standards development activities and standards baseline. It examines how standards figure into the options, benefits and risks of cloud computing for users and providers of geospatial data and software... (more)
International assessment criteria for the GISc profession
by Heindrich du Plessis, Department of Rural Development and Land Reform, and Adriaan van Niekerk, University of Stellenbosch            

The aim of this article is to give an international overview of the geographical information science (GISc) workforce, the roles and expected competencies of persons working in the industry, including the importance of professionalism through certification and licensing and the adherence to a code of conduct based on ethical principles... (more)
Forest carbon mapping
by Tina McDowell, Carnegie Institution   

Using new, highly efficient techniques, Carnegie and Colombian scientists have developed accurate high-resolution maps of the carbon stocks locked in tropical vegetation for 40% of the Colombian Amazon (165 000 km2), an area about four times the size of Switzerland... (more)
Enhanced object-based classification of SA land cover classes
by Linda Kleyn, Paida Mangara and Hadley Remas, South African National Space Agency               

Spectral rule-based preliminary mapping developed in Europe was replicated for Landsat 5 TM and Landsat 7 ETM imagery in the north eastern region of South Africa. Land cover classes in this area include natural vegetation, informal settlements, intensive agriculture and forestry areas... (more)
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In this issue...
- SDI challenges - is South Africa on track?
- Land surveyors involvement with pre- and post-survey activities
- Improve your geospatial employment prospects
- Review of GNSS formats for real-time positioning
- Intelligent location address coding
- Applying mobile mapping technology to urban inventories
- Airborne hyperspectral imaging for baseline environmental monitoring
- Cost-effective GIS and spatial analysis for municipalities
- OGC standards and cloud computing
- International assessment criteria for the GISc profession
- Forest carbon mapping
- Enhanced object-based classification of SA land cover classes
- Views, comment and opinion
- Industry and institute news
- Training news
- Company and product news
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