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Samenvatting HC 1+2 mappen
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Dit zijn hoorcollege 1 en 2 samengevat
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Mapping 1.0 lectures aantekeningenHoorcollege 1 > Introductie in GIS: ruimtelijke data en geografische visualisatie
Een coördinatenstelsel is een afgesproken kader waarmee men een wiskundige beschrijving
van locaties kan geven.
Datums define the size and shape of the earth and the origin and orientation of the
coordinate systems used to map the earth.
Datums use a shape (bol of ellipsoide).
Geografische coördinaten: latitude en longitude
Geprojecteerde coördinaten: platte coördinaten, geprojecteerd van een bol/ellipsoïde naar
een plat vlak.
Geoïde model van de aarde: het aardoppervlak is niet plat, maar ongelijk zoals een
aardappel. De geoïde is gebaseerd op het zwaartekrachtsveld, niet op een wiskundige vorm
of sfeer of ellipsoïde.
Hoorcollege 2 > ruimtelijke analyse: combineren van geodata tot plaatsgebonden
informatie
Spatial analysis: a set of analytical methods which require access both to the attributes of
the objects under study, and to their locational information
OF
Being able to manipulate spatial data, with the
purpose to derive extra value
Vector data: van punten met coördinaten naar
lijnstukken, naar polygonen > polygonen
‘delen’ grenslijnen (dus vakken).
Entity relationship model
Opslag in een relationele database:
- Tabellen met onderlinge relaties
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