Downloaded 15 times
![GIS Life Cycle: Data Transfer
• Data Structures: Methods of representing the data model
from w/in the computer
– Vector [Arc/Nodes] Data Structures
– Raster [Grid] Data Structures](https://image.slidesharecdn.com/gis-160910151326/85/Gis-23-320.jpg)
![GIS Life Cycle: Data Analysis
Spatial Data: Geographically referenced data, identified according to
Location.
Points Lines Polygons
Non-Spatial [Attribute Data ]: The attributes refer to the properties of spatial
entities.
Spatial Data
Community-
developed data
sets
Framework Data
sets](https://image.slidesharecdn.com/gis-160910151326/85/Gis-24-320.jpg)
Uploaded bysatya sudheer
Gis
1) Geographic Information Systems (GIS) is a system for capturing, storing, analyzing and displaying spatially-referenced data to help with visualization, decision-making, and problem-solving. 2) GIS has applications in areas like monitoring climate change, emergency response during natural disasters, preventing hunger through analysis of crop patterns, and crime analysis by mapping crime locations over time. 3) The company's GIS story involved developing a weather dashboard as a web interface to allow insurance company employees to visualize weather data by location and time to enhance event response and analysis of policies and claims.
More Related Content
Gis
- 1. Presentation subject tocome here Geographic Information Systems Think Spatially 31st May 2012
- 2. Agenda 2 What Is GIS? 1 GIS Development Lifecycle 5 GIS In Insurance 4 WhyWe Need GIS? 2 Real Time Applications 3 Our GIS Story 6 Q & A 9 Challenges 7 Future 8
- 3. What Is GIS? 1
- 4.
- 5. Geographic Information Systems Anorganized collection of computer hardware, software, geographic data, and personnel designed to effectively capture, store, manipulate, analyze, and display all forms of geographically referenced information.
- 6.
- 7. Geographic Information Systems Wayof organizing geographical information
- 8.
- 9. Why we needGIS ? Visualization Decision Making Problem Solving
- 10. First known applicationof GIS John Snow memorial
- 11.
- 12. Monitoring a ChangingClimate Surface topography Ice sheet boundary Ice motion Snow accumulation
- 13. Service during naturalcalamities Mapping of Important Locations Rescue Team and Social Worker Outsource Tasks Haiti Crisis(2010)
- 14.
- 15. Crime Analysis 5 Minutes 10Minutes 15 Minutes
- 16. Day to DayScenario How To Get There A-B Discover Along The Way Explore At Your Destination Where To Go
- 17.
- 18. GIS Mapping toInsurance criteria Critical element Where Better market Reinsurance Insurance carrier’s profitability Underwriting
- 19.
- 20. Geographical Information System Data PeopleProcedures Hardware Software Network Geographical Information System
- 21.
- 22. GIS Life Cycle:Sampling & Data Model • Data Model: A Conceptual description (Mental Model) of how data are organized for use by the GIS. • They are not always designed to deal with the limitations of computers GIS Data Models Attribute Data Models Spatial Data Models Raster Data Model Vector Data Model Image Data Model
- 23. GIS Life Cycle:Data Transfer • Data Structures: Methods of representing the data model from w/in the computer – Vector [Arc/Nodes] Data Structures – Raster [Grid] Data Structures
- 24. GIS Life Cycle:Data Analysis Spatial Data: Geographically referenced data, identified according to Location. Points Lines Polygons Non-Spatial [Attribute Data ]: The attributes refer to the properties of spatial entities. Spatial Data Community- developed data sets Framework Data sets
- 25. GIS Life Cycle:Reports • Mapping is a key feature of a GIS but it is NOT the whole story. • Spatially Intelligent Reports : Provides links between point, lines, areas, grids & Attributes in a database. – Identify trends on the data. – Create new relationships from the data. – View complex relationships between data sets. – Make better decisions.
- 26.
- 27.
- 28. Weather Dashboard Objectiveof the tool? – Develop a web interface that allows Travelers to visualize the weather data by day, zoom into areas of significant “Impact” to provide appropriate metrics related to the weather, policies, and claims. Targeted Users – Application will be utilized primarily by the “CAT Center” to enhance event response activity.
- 29. Our GEO-SPATIAL CAPABILITIES WeatherDashboard - Demo
- 30.
- 31.
- 32. Shape of theEarth
- 33. Projections of Earth Oblateellipsoid
- 34.
- 35.
- 36.
- 37.
- 38.
- 39.
- 40. 2-D description 4-D interaction Smarter Planet Future !!!!
- 41.
- 42.
- 43. Anna Salai -1960
- 44. Anna Salai -2012
- 45.
- 46.
- 47.
Editor's Notes
- #21 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose. GIS is a collection of computer hardware, software, and geographic data for capturing, storing, updating, manipulating, analyzing, and displaying all forms of geographically referenced information. In the simplest terms, GIS is the merging of cartography, statistical analysis, and database technology. Organized collection of Hardware Software Network Data People Procedures
- #22 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose.
- #23 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose. Field Data Models : Selecting points from a continuous surface. Object Data Models: Selecting some discrete objects, discarding others. what is a Data Model? - The heart of any GIS is the data model. - A data model is a set of constructions for describing and representing selected aspects of the real world in a computer. - There is no single type of GIS Data model that is best for all circumstances.
- #24 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose. Vectors can represent point, line & area features very accurately Raster Model Advantages Simple data structure Efficient for remotely sensed or scanned data Simple spatial analysis procedures Disadvantages Requires greater storage space on computer Depending on pixel size, graphical output may be less pleasing Projection transformations are more difficult More difficult to represent topological relationships Vector Model Advantages Data can be represented in its original resolution without generalisation Requires less disk storage space Topological relationships are readily maintained Graphical output more closely resembles hand-drawn maps Disadvantages More complex data structure Inefficient for remotely sensed data Some spatial analysis procedures are complex and process intensive Overlaying multiple vector maps is often time consuming
- #25 Geospatial Data: Community-developed data sets usually derived for a single purpose but made available for potential re-use. Data sets developed to a common content specification for high re-use potential. these are known as "FrameWork" Data
- #26 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose.
- #27 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose.
- #31 Generally, a GIS is custom-designed for an organization. Hence, a GIS developed for an application, jurisdiction, enterprise, or purpose may not be necessarily interoperable or compatible with a GIS that has been developed for some other application, jurisdiction, enterprise, or purpose.