GEOGRAPHICAL INFORMATION SYSTEMS
➔ Information systems use geographical data and skills to
produce, manage, monitor, predict and identify patterns and
solve problems related to physical and man-made environments.
Geographical information systems capture, store, update,
analyze data and display geographical information
SOURCES:
1. Hard copy maps or photos
2. Digital maps
3. Census
4. Satellites
TYPES OF DATA:
1. Spatial Data: It is any physical or man-made feature in GIS
2. Attribute Data: Provides descriptive details about physical or
man-made features
REMOTE SENSING:
1. Passive Remote Sensing: Is when satellites use the solar energy
radiated by natural or manmade features to obtain data
2. Active Remote Sensing: Is when satellites radiate energy to obtain
data
Why use remote sensing?: It gives you an overview of the whole area, it
is reliable and up to date, and data can be collected continuously.
➔ Information systems use geographical data and skills to
produce, manage, monitor, predict and identify patterns and
solve problems related to physical and man-made environments.
Geographical information systems capture, store, update,
analyze data and display geographical information
SOURCES:
1. Hard copy maps or photos
2. Digital maps
3. Census
4. Satellites
TYPES OF DATA:
1. Spatial Data: It is any physical or man-made feature in GIS
2. Attribute Data: Provides descriptive details about physical or
man-made features
REMOTE SENSING:
1. Passive Remote Sensing: Is when satellites use the solar energy
radiated by natural or manmade features to obtain data
2. Active Remote Sensing: Is when satellites radiate energy to obtain
data
Why use remote sensing?: It gives you an overview of the whole area, it
is reliable and up to date, and data can be collected continuously.
