Conflation

1
Conflation

• Combining of data from different sources
• Conflation problem data from different sources
  do not match exactly

2
Dynamic segmentation

• each vertex may have coordinates x,y,m or x,y,z,m
• m is a measure, which is used in d.s. to denote a
  location
• m is needed because
• the length between nodes may be something else
  than linear distance
• for polylines
• demo
• perl -MGeoShapelib -e 'anew GeoShapelib
  "data/digiroad/Uusimaa_1/DIGIROAD_KETJU",Loadgt0
  a-gtdump' less

3
CADD

• Computer aided design and drafting
• demo gimp

4
GIS education (Unwin 1990)

• spatial properties
• spatial operations
• scale continuum
• co-ordinate systems
• spatial patterns
• increase metacognitive awareness pertaining to
  the affects of abstracting the real world through
  GIS data models and GIS-specific spatial
  operations

5
Tasks / workflows

• Modeling
• Planning
• Management
• Design
• Construction
• Operation and maintenance