what is gis
DESCRIPTION
Learn the basics about GIS with the presentation of Jaime Nieves and Ignacio Vázquez on Esri European User Conference 2011.TRANSCRIPT
What is GIS and How Can It Help Me?
Jaime Nieves Ignacio Vázquez
esri spain
European User Conference Madrid 2011 esri
«Knowing where things are, and why, is essential to rational decision making.»
Jack Dangermond Esri President & Founder
YOU CAN DO WITH YOUR
A LOT MORE
Intelligence
Data Applications
Hardware Knowledge
Software
GIS GIS
Intelligence
Data Applications
Hardware Knowledge
Software
GIS GIS
Geographic Information System
Geographic Information System
…with a spatial component
…for capturing, managing, analyzing and understanding information…
A set of software, hardware and data…
Geographic Information System
…with a spatial component
…for capturing, managing, analyzing and understanding information…
A set of software, hardware and data…
A GIS integrates hardware, software and data
to capture, manage, analyze and visualize
any kind of information with a geographic component.
«You do not really understand something unless you can explain it to your grandmother.»
Albert Einstein
Theoretical Physicist, unfortunately not related to GIS
Everyone as a part of a GIS
Redefining your view of GIS
Unemployment
Population
Income
GIS defined by its use
Workflow and productivity improvement
Build up a reference information base
Efficiency improvement
Decision-making support
Performance and accounting measurement support
Generation of revenue
Social content
GIS in our day-to-day life
GIS in our day-to-day life
Powering GIS
Tens of users
Hundreds of users
Thousands of users
Millions of users
Research
GIS Professionals
GIS Users
Society
A few practical applications
Restaurants Hotels Streets Roads Rivers Parcels Vegetation Water bodies Elevation Imagery
Reality
GIS modelling our world
Conceptual workflow
Geometry Data
Rules Parcel No. Type Address
9856101 C López de Hoyos9856102 C Antonio Salces9856103 A América9856104 P Prosperidad9856105 C Luis Cabrera9856106 C Santa Hortensia
Three perspectives
Map
Data
Models
The Data
• A single data repository: the Geodatabase • Every geographic dataset,
business logic and behavior
The Map
• A set of geometric features that represents a geographic reality.
• A ‘window’ for exploring the data.
The Model
• Analysis tools that creates new geographic information from existing data.
“
In short, a GIS is…
An information system (hardware, software, data)
to any geographical datasets
which enables us to apply lots of analysis models
for generating derived information
that can be visualized as maps.
A Geographic Information System helps us understand our world,
answer questions about our environment and support us during decision-making.
Using spatial data –the traditional way
Databases Files Services
ArcGIS Desktop
ArcGIS Explorer
Using spatial data –the traditional way
Databases Files Services
ArcGIS Desktop
ArcGIS Explorer
Client Level
Data Level
Data
Geodatabase
• Centralized data repository
• Spatial relationships
• Multi-user access
• Versioning
• Security
• Scalability Dimensions
Parcels
Networks Survey
Addresses
Annotation Vectors
3D Objects
Topology
CAD Imagery
Terrain
Attibutes
Symbology Geodatabase
Data Layers
Streets
Data
Data Layers
Parcels / Building footprints
Data
Data Layers
Water pipes
Data
Data Layers
Hydrants
Data
Data Layers
Fire risk
Topologic integration
Data
• Branch of mathematics that studies geometry from a qualitative perspective.
• Topology describes the geometric relationships of a given space.
“
Topology
A topologist is someone that can’t distinguish between a
cup of coffe and a doughnut
Data
Topology in our GIS
• Defines the way different point, line or polygon layers relate each other geometrically.
Two parcels can’t overlap
Two contour lines can’t intersect
Buildings must be within parcels
Data
Behavior in our GIS
• Geometric features may have properties that represent geographic objects.
Cadaster (parcels, boundaries, nodes )
Street network (edges, junctions, turns, impedances)
Data
Data
Where to find data
• ArcGIS.com - Free basemaps
- Map templates
- User Services
- Data packages
- Social Network
• resources.esri.com - Code samples
- References & Forums
- Online Help
Geographic Data
Clients
• Visualization • Database query • Data preparation • Edit • Analysis / Modelling • Mapping
Client
Client
Multiple users
Desktop ArcMap ArcGIS Explorer ArcReader
Mobile ArcGIS for iOS ArcGIS for Android ArcGIS for WPS ArcGIS Mobile ArcPad
Web REST Flex Silverlight Javascript
GIS Analysis
Two-tier architecture
Databases Files Services
ArcGIS Desktop
ArcGIS Explorer
Client Level
Data Level
Two-tier architecture
Databases Files Services
ArcGIS Desktop
ArcGIS Explorer
Service-Oriented Architecture
Databases Files Services
ArcGIS Desktop ArcGIS Explorer Mobile devices Web Browsers
ArcGIS for Server
Corporate Apps.
Cloud GIS
Three-tier architecture
Databases Files Services
ArcGIS Desktop ArcGIS Explorer Mobile devices Web Browsers
ArcGIS for Server
Corporate Apps.
Cloud GIS
Client Level
Server Level
Data Level
GIS Services
ArcGIS for Server Services
SOAP
REST
KML
OGC
MXD
Server
Create Share Use
Service-oriented architecture
Ce
Central
Area
Department
Publish
Server
Web 2.0
Web 2.0
Communities
Blogs
P2P
Wikis
Albums
RSS
On-line applications
Geolocation
Folksonomies
Server
Powering GIS
Tens of users
Hundreds of users
Thousands of users
Millions of users
Research
GIS Professionals
GIS Users
Society Server
Intelligent Web Maps
A GIS is…
An information system (hardware, software, data)
to any set of geographic data
that allows us to apply lots of analysis models
in order to generate derived information
that can be explored as a map.
Geographic Information Systems…
…help us understand reality…
…answer questions about our world…
…and support us during decission-making.
A piece of advice…
Where to begin
«The application of GIS is limited only by the imagination of those who use it.»
Jack Dangermond Esri President & Founder
Thank You
