Die ontwikkeling van 'n GIS-tegniek om visuele landskap te kwantifiseer

[摘要] ENGLISH ABSTRACT:The visual landscape is a resource that should be managed sustainably. Sufficient toolsfor the effective management of visual landscapes are still lacking. Existing visualizationsoftware (including 3D Analyst) could be utilized as an aid in visual landscapemanagement, but as such it lacks quantification functionalities. Geographical InformationSystems (GIS) could effectively be used in the quantification of visual landscapes.The composition, value and experience of visual landscapes are complex and interrelated.Visual landscapes should be divided into physical and cognitive elements formanagement purposes. In the quantification of visual landscapes, the physical elementsare effectively handled within a GIS. Insufficient research though, hampers thequantification of the visual landscape in terms of cognitive elements.Arc View GIS, including the 3D Analyst Extension, can be extended to quantify visuallandscapes. Arc View's integrated development language, Avenue, was used to develop anew technique, namely The Visual Landscape Quantifier (VLQ). The VLQ-technique isan application based on a virtual landscape where a user can select observation and targetlocations. These locations are used to quantify the visual landscape in a chosen direction.Results are expressed as the percentage (%) of the visible land use in the selected visuallandscape. The user can choose whether the results should be displayed as a list or as agraph. Wanted and unwanted elements in the landscape could be identified, aiding themanagement and planning of landscapes.Keywords:Visual landscape, landscape, Visual Landscape Quantifier, visualization, Arc View GIS,Avenue, Object Oriented Programming, 3D Analyst.

[发布机构] Stellenbosch University