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Topographic surface modelling using raster grid datasets by GMT: example of the Kuril–Kamchatka Trench, Pacific Ocean

1 Introduction Current paper introduces the use of Generic Mapping Tools (GMT) for the cartographic workflow aimed at the geological data visualization. Among the wide range of GIS software used for mapping and geospatial data modelling, GMT stands apart from the traditional tools such as ArcGIS ( ESRI Team, 2010 ), QGIS ( QGIS, 2019 ) and MapINFO. The particularity of the GMT comparing to the standard GIS consists in its fundamentally different approach towards geodata processing. The GMT, originally developed by Wessel and Smith (1998) is not a classic

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Transformation of 3D geospatial data into CityGML – a case of Prague

, only a subpart (the rectangle 2.5 ⨯ 2 km covering the city centre including, for example, Prague Castle or Charles Bridge) was used. The intention was to describe the principles of data transformation, storage and visualization, which can be later applied on larger data sets. In particular, the following objects were available: buildings, bridges, digital terrain model. Figure 2 shows the downloaded input data visualized in Esri ArcScene desktop application. The used coordinate systems are S-JTSK/Krovak East North (EPSG:5514) and Baltic 1957 height

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