Download Spatial Information Retrieval

Spatial Information Retrieval
Spatial Data Mining + Knowledge Discovery
• Used for mining data in spatial databases with
huge amounts of data
• Spatial data is defined as location-related data in
an object
• A spatial database stores spatial objects and
spatial relationships between these objects
• Important application - GIS
What is GIS
• Geographic Information System
• A computer-based system for storing, analyzing,
and reporting map and spatial database,
providing environmental, social economic and
geographic information.
• A computer-assisted information system to
collect, store, manipulate and display spatial
within the context of an organization, with the
purpose of functioning as a decision support
system
What is GIS
Layers or Themes:
•Objects that contain spatial
information are represented as
several different layers where
each layer holds data about a
particular kind of feature.
•Each feature is linked to a
position on the graphical image
on a map and a record in an
attribute table.
GIS Components
•
•
•
•
•
Hardware (computer system)
Software
Data (spatial database)
Developers and users
Analysis and modeling
Spatial Databases in GIS
• Data capture
• Data storage/retrieval
• Data display
Data Storage
WELL_NA
ME
CONT__
STAT
LATITUDE
LONGITUD
E
TD__M_
OPERATOR
COMPLET
ED
08 1
dry
-4.797222
12.478333
409.00
Gulf Oil Corp
19680100
Lower Congo Basin
100 1
dry
-5.580444
12.341944
1048.00
Gulf Oil Corporation
19671203
Lower Congo Basin
101 1
dry
-5.580278
12.486944
844.00
Gulf Oil Corporation
19690324
Lower Congo Basin
109 1
dry
-5.618333
12.162500
1370.00
Gulf Oil Corporation
19680204
Lower Congo Basin
109 2
dry
-5.616667
12.163333
1369.77
Gulf Oil Corp
19680204
Lower Congo Basin
109 3
dry
-5.624722
12.156944
3539.00
Gulf Oil Corporation
19680301
Lower Congo Basin
110 1
dry
-5.590278
12.178611
1067.00
Gulf Oil Corporation
19680211
Lower Congo Basin
111 1
dry
-5.653306
12.267528
1197.00
Gulf Oil Corporation
19680120
Lower Congo Basin
111 2
dry
-5.660417
12.260000
2750.00
Gulf Oil Corporation
19711001
Lower Congo Basin
112 1
dry
-5.645556
12.355000
1064.00
Gulf Oil Corporation
19680108
Lower Congo Basin
113 1
dry
-5.620000
12.453611
915.00
Gulf Oil Corporation
19671211
Lower Congo Basin
113 2
dry
-5.631417
12.435972
1214.00
Gulf Oil Corporation
19671220
Lower Congo Basin
122 2
dry
-5.675000
12.241667
1372.00
Gulf Oil Corporation
19680127
Lower Congo Basin
122 3
dry
-5.732222
12.175278
4304.00
Gulf Oil Corp
19680919
Lower Congo Basin
123 2
dry
-5.668333
12.256667
1370.00
Gulf Oil Corporation
19680114
Lower Congo Basin
123 3
dry
-5.726111
12.266667
1840.00
Gulf Oil Corporation
19680219
Lower Congo Basin
123 4
dry
-5.684444
12.286389
3601.00
Gulf Oil Corporation
19680514
Lower Congo Basin
123 5
gas
-5.706667
12.270556
2644.00
Gulf Oil Corporation
19680000
Lower Congo Basin
BASIN
Data Display
A Example of Information analysis in GIS
• Stating the problem
• Breaking down the
problem into a series of
objectives
• Assigning value of
suitability to the
objectives
• Finding suitable areas
Web GIS
• Web-GIS
 Web GIS is a geographic information system that GIS
data and functionality are made available over the
Internet.
• How it works:
 On the server side: GIS database and applications
 On the client side: a user interface within a web
browser.
Web GIS
• Web GIS Advantages
 Unlimited access
 Low cost
 Easily to use
• Web GIS Disadvantages
 Download time
 Affected by network traffic
 Limited functions
Web GIS
• Web GIS Examples:
 National Geographic MapMachine
 Natural Resources Information