1. Mgr. Jiří Čtyroký Ph.D Ing. Martin Šilha
CAD V - GIS
Mgr. Jiří Čtyroký Ph.D
Ing. Martin Šilha

2. GIS
Geographic information system – information system based on geography location related data (geodata,  spatial data)
GIS applications examples:
Property cadastre –
Development plan –

3. GIS
The most common representation of geodata are vector based data. Vector geodata are composed of description of geoobjects (features).
Geoobject (feature) is defined by:
Spatial description (shape, location, topology)
Non-spatial description (so called attributes, properties)
Geoobjects (features) are represented as:
points
lines
polygons

4. CAD x GIS Object is defined by: Object is defined by: CAD GIS Shape
Location
(Drawing style)
Object is defined by:
Shape
Location
Attributes

5. GIS – analyses What is at selected spot? How accessible is my school?
How many people are touched by high noise?
How many bus stops are in the district?
What is visible from the new tower?
...

6. GIS – feature classes, layers
Geodata are stored as „feature classes“ (layers)
Various data models:
Vector
Raster
3D TIN
Point clouds, …
Data are stored in Geodatabases

7. Vector x Rasetr Bitmap and vector graphics in sketches: comparison
source:
source : vektor-vs-bitmapa-1029
Bitmap and vector graphics in photography: comparison
source :

8. GIS Software Commercial: Open Source: ArcGIS for Desktop (ESRI)
Geomedia (Hexagon)
Mapinfo (Pitney Bowes)
Elyx GIS (1st Spatial)
AutoCAD Map 3D (Autodesk)
IDRISI GIS (Clark Labs)
OCAD (OCAD Inc.)
Open Source:
qGIS
GRASS GIS
gvSIG
uDIG

9. Practical information
Password: kurz_gis
Login: kurz_gis
P - public (GIS) shared drive for data (read only!)
H – your student folder
website: