Transcript FUTURE TRENDS IN GIS

FUTURE TRENDS IN GIS
Compared to 10 Years Ago
 acquiring data for a new GIS is no longer a major
problem.
 GPS has become a major sources of new GIS data,
and comes increasingly from integrated GPS/GIS
systems.
 digital map images such as scanned maps and air
photos are often used as a background image for
cross-layer registration and update.
Major Influences on GIS
 advanced GIS work has been influenced significantly
by the workstation.
 GIS has quickly incorporated distributed systems and
databases.
 microcomputer has allowed GIS to be applied to
new fields and has improved GIS education.
 mobility of portable GIS and GPS systems has
revolutionized GIS use.
Fast Geo-Processing
 faster computer hardware means faster geo-
processing
 advantages of higher speed:
 larger data sets may be processed (larger area
with higher levels of spatial resolution)
 more complex models can be established
 more complex analysis for decision-making
 better methods of display and visualization
Parallel Processing
 perform tasks on several difference processors
simultaneously within same computer
 impact:
 analysis which require repeating same steps
 raster data in which each pixel is independent are
likely to be easier
 image processing such as classification can benefit
 visualization can be greatly improved
Trends in GIS Software
 far behind hardware development
 trend towards “open system architecture”
 integration of video and audio information into GIS
 applications that may benefit:
 Real estate management and marketing
 Environmental quality assessment
 Computer aided education
 Simulation in geographical processes
 inclusion of artificial intelligence (fuzzy logic,
expert systems, neural networks)
Trends in GIS Applications
 GIS technology becoming more affordable, more
reliable, more widely used and better known
 3-D capabilities of GIS widely used in geology,
hydrology, geomorphology and mining, landscape
ecology studies
 may develop in areas of image processing (X-rays
and medical imaging)
 studies of global issues (tropical deforestation, acid
rain, endangered species)
 real-time applications (urban management,
emergency services and transport control)
Future Issues
 new users
 privacy
 data ownership
 copyright and publishing (bits not atoms)
 global data inequalities
 The Bit Police?
 GI Science & Technology
What’s Next
 future of GIS is in your hands
 as a GIS analyst you have the capability to use or
misuse the power that GIS brings to the world's
problems
Final Exam
 2 hours on December 19 @ 6 pm
 10 multiple choice (10 marks)
 Definitions (5 of 7 - 25 marks)
 SQL, census, fuzzy tolerance, etc.
 Short Answers (35 marks)
 Define data quality in terms of the four elements
 Ways in which overlay is used
 Differences between probability and non-
probability sampling…