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Terrain analysis

Terrain analysis


Mapová aplikace je určena pro základní analýzy výškopisných dat území České republiky. Umožňuje prohlížení výškopisných dat ve formě obarveného stínovaného reliéfu, sklonitosti a orientace svahů, znázornění prostého stínovaného reliéfu nebo stínovaného reliéfu se Z-faktorem 10. Aplikace rovněž nabízí nástroje umožňující provádět analýzy viditelnosti. Analytické funkce mapové aplikace zajišťují image a geoprocessingové služby, které umožňují provádět dynamické prostorové analýzy nad zdrojovými daty přímo na serveru. Aplikace umožňuje znázornění výsledku analýz na pozadí podkladových map (Základní topografická mapa nebo Ortofoto) s možností nastavit průhlednost zobrazených vrstev. Výslednou situaci je možné dále prohlížet ve 3D lokální scéně, případně stáhnout ve formátu SHP, DGN, DXF nebo TXT. Služby jsou publikované a provozované na ArcGIS serveru Zeměměřickým úřadem. Zdrojovými daty těchto služeb jsou digitální model reliéfu 4. generace (DMR 4G), digitální model reliéfu 5. generace (DMR 5G) nebo digitální model povrchu 1. generace (DMP 1G) převedené do rastrového formátu v souřadnicovém systému S-JTSK.

State
Functional  
Theme
Environment  
Platform
Web  
Type
Free  
Publication date
2/8/2024
Date last modified
2/8/2024
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Used datasets


ZABAGED® - Altimetry - DMR 4G. Digital Terrain Model of the Czech Republic of the 4th generation in S-JTSK, Bpv

The Digital Terrain Model of the Czech Republic of the 4th generation (DMR 4G) represents a picture of natural or by human activity modified terrain surface in digital form as heights of discrete points in a regular grid (5 x 5 m) with coordinates X,Y,H, where H means the altitude in the Baltic Vertical Datum - After Adjustment with total standard error of 0.3 m of height in the bare terrain and 1 m in forested terrain. The model is based on the data acquired by altimetry airborne laser scanning of the Czech Republic territory between years 2009 and 2013. DMR4G is established to analyse terrain situation at regional scale and character, e.g. for extensive transport and water management projects planning, natural phenomena modelling etc.

ZABAGED® - Altimetry - DMR 5G. Digital Terrain Model of the Czech Republic of the 5th generation (DMR 5G) in S-JTSK, Bpv

The 5th generation digital relief model of the Czech Republic (DMR 5G) represents a representation of the natural or human-modified earth's surface in digital form in the form of heights of discrete points in an irregular triangular network (TIN) of points with coordinates X,Y,H, where H represents the height above sea level in the Balt height reference system after leveling (Bpv) with a complete mean height error of 0.18 m in exposed terrain and 0.3 m in forested terrain. The model was created from data acquired by the method of airborne laser scanning of the elevation of the territory of the Czech Republic in the years 2009 to 2013. It was completed as of 30 June 2016 for the entire territory of the Czech Republic. DMR 5G is intended for the analysis of terrain conditions of a local nature and extent, e.g. in the design of land adjustments, planning and design of transport, water management and building structures, modeling of natural phenomena of a local nature, etc. DMR 5G is a basic source database for the creation of contour lines intended for large-scale maps and computer visualization of elevation in territorially oriented information systems of high level of detail.

ZABAGED® - Altimetry - DMP 1G.Digital Surface Model of the Czech Republic of the 1st generation (DMP 1G) in S-JTSK, Bpv

The Digital Surface Model of the Czech Republic, 1st Generation (DMP 1G), represents the territory including buildings and vegetation cover as an irregular network of height points (TIN) with a total root mean square error of 0.4 m for precisely delineated objects (buildings) and 0.7 m for objects that are not precisely delineated (forests and other vegetation elements). The model was created from data acquired by airborne laser scanning of the Czech Republic between 2009 and 2013. DMP 1G is intended for analyses of terrain elevations (DMR 5G) and the geographical objects located on it (buildings and vegetation cover) at regional and, in some cases, local scales, for example in visibility analyses, radio wave propagation modelling, modelling of the dispersion of harmful substances and pollutants in the atmosphere, and generating virtual terrain views in flight simulators and training devices.