lecture 14 GIS trends.ppt
- 1. FUTURE TRENDS IN GIS
- 2. 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.
- 3. 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.
- 4. 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
- 5. 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
- 6. 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)
- 7. 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)
- 8. Future Issues new users privacy data ownership copyright and publishing (bits not atoms) global data inequalities The Bit Police? GI Science & Technology
- 9. 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
- 10. 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…