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Data capture of geometric data for local authorities' geographic information systems
Bibliography: leaves 64-65.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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School of Architecture, Planning and Geomatics
2015
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| _version_ | 1867614467679846400 |
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| access_status_str | Open Access |
| author | De Wet, Francois Johan |
| author2 | Barry, Michael |
| author_browse | Barry, Michael De Wet, Francois Johan |
| author_facet | Barry, Michael De Wet, Francois Johan |
| author_sort | De Wet, Francois Johan |
| collection | Thesis |
| description | Bibliography: leaves 64-65. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/14953 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:52:30.774Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | School of Architecture, Planning and Geomatics |
| publisherStr | School of Architecture, Planning and Geomatics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/14953 Data capture of geometric data for local authorities' geographic information systems De Wet, Francois Johan Barry, Michael Surveying and Geodetic Engineering Bibliography: leaves 64-65. This thesis describes research and development work which led to algorithms, procedures and computer programs which facilitate the cost effective and accurate capture of geometric data. The geometric data for a Geographical Information System (GIS) at a local authority or municipality consist of a number of different data sets. These include inter alia: the cadastral information, zoning information, servitudes, building lines, the outlines of improvements and the reticulation networks and the house connection points of the engineering services. The initial capture of the geometric data appears to be deceptively simple and is often not given the required consideration. The initial data capture phase of GIS projects is usually a difficult and time consuming process. This is even more so in the case of GIS for local authorities. The reason for this difficulty is the large volume of data coupled with the high accuracies required for the cadastral base map and the engineering services. Input facilities of most commercial GIS software packages generally do not provide the most efficient means of data capture. This problem warrants the development of techniques and procedures specific to local authority GIS applications which ensure that data capture can be done effectively and efficiently. The major benefit of these procedures is that they can be implemented on personal computers with low random access memory capacity. This eliminates the need for investment in costly equipment at the initial stage of data capture in the development of a GIS. It allows the capture of data on low cost technology and the postponement of the purchase of an expensive system or workstation until the data capture phase has been completed. The lowest personnel skills required are copy typing in contrast to the traditional methods of using CAD operators who command higher salaries and require more expensive training. The system developed by the author is more productive, both in quality and volume of work produced, than the CAD approach. It also permits the delay of purchase and training on expensive GIS software and hardware, which may be obsolete by the time the graphic database is established. 2015-11-13T13:02:34Z 2015-11-13T13:02:34Z 1995 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/14953 eng application/pdf School of Architecture, Planning and Geomatics Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Surveying and Geodetic Engineering De Wet, Francois Johan Data capture of geometric data for local authorities' geographic information systems |
| thesis_degree_str | Master's |
| title | Data capture of geometric data for local authorities' geographic information systems |
| title_full | Data capture of geometric data for local authorities' geographic information systems |
| title_fullStr | Data capture of geometric data for local authorities' geographic information systems |
| title_full_unstemmed | Data capture of geometric data for local authorities' geographic information systems |
| title_short | Data capture of geometric data for local authorities' geographic information systems |
| title_sort | data capture of geometric data for local authorities geographic information systems |
| topic | Surveying and Geodetic Engineering |
| url | http://hdl.handle.net/11427/14953 |
| work_keys_str_mv | AT dewetfrancoisjohan datacaptureofgeometricdataforlocalauthoritiesgeographicinformationsystems |