In this paper we examine the visualisation of multiple variables in thematic maps by using the third dimension. Three cases illustrate the potentials and limitations for three-dimensional visualisations of multivariate datasets. After examining these examples, we reflect what should be considered carefully when creating this kind of maps. Maps making use of the third dimension can help to visua...

Thematic maps of spatial data are constructed by using standard thematic classification methods that do not allow management the uncertainty and, consequently, evaluation reliability resulting map. We propose a novel fuzzy-based method applied to construct in Geographical Information Systems. An initial fuzzy partition domain features dataset is triangular numbers; our finds an optimal evaluati...

At least two types of ageing processes affect digital records: media ageing and semantic ageing. We argue that the main challenges for digital preservation arise from semantic ageing, that is, the evolution of data formats. The article analyzes a type of document that is particularly vulnerable to semantic ageing: the digital maps produced by researchers on built heritage which combine spatial ...

the high hillsides of the tehran metropolis are prone to landslides due to the climatic conditions and the geological, geomorphologicalcharacteristics of the region. therefore, it is vitally important that a landslide susceptibility map of the region be prepared. for thispurpose, thematic layers including landslide inventory, lithology, slope, aspect, curvature, distance to stream, distance to ...