Flashcards
GIS-EXAM 1 STUDY GUIDE
Cards in this deck (38)
- 1Geospatial technologyA number of different high-tech systems that acquire, analyze, manage, store, or visualize various types of location-based data. Including GIS, GPS, and Remote Sensing
- 2(GIS) Geospatial Information SystemsComputer-based mapping, analysis, and retrieval of location-based data that can be used to solve problems
- 3Data Technology Application People (D-TAP)Components of a GIS:
- 4Entity Attribute RelationshipConcepts of spatial data:
- 5EntityA spatial object with specific properties
- 6AttributeA property of an entity
- 7RelationshipHow entities relate
- 8Entity class Entity type Feature classEntities with common properties are called:
- 9Vector Raster SurfaceThree Data Types:
- 10Planning Data Acquisition or Inventory Cartographic Production (includes Analysis) Product Delivery (includes Management)Phases of GIS Development:
- 11-Input data converted to digital format -Manipulation -Management -Query and Analysis -Proximity Analysis -Overlay Analysis -VisualizationHow GIS Works (Steps):
- 12A graphic file linked to an attribute data base.Two element structure of modern geographic information systems:
- 13MapA graphical representation of the spatial structure of physical and cultural environments of the earth
- 14Spatial analysisThe detection of spatial distribution patterns and relationships among different types of objects over time.
- 15To communicate geographic informationWhat is a map's function?
- 16-General -Thematic (Qualitative,Quantitative)Two Map Types:
- 17Thematic mapType of map that shows the structure and distribution of phenomena
- 18General mapType of map that shows location of position information (ex. Atlas):
- 19Qualitative Thematic mapType of thematic map that depict different features with different symbols according to some attribute (ex. soil series maps)
- 20Quantitative Thematic mapType of thematic map that shows differences in features' numeric attributes (ex. Population density for each county in a state):
- 21Large Scale mapMap scale: less than 1: 5000
(used for land development and engineering) - 22Medium Scale mapMap scale: 1 :5000 - 1:100,000
(used for topographic mapping) - 23Small scale mapMap scale: greater than 1: 100,000
(used for large area maps, ex. atlas) - 24Statement Scale:Map Scale: 1 ft to 5000 ft
- 25Geodetic Datum (North American Datum 1983-NAD 83)A reference for the horizontal features on the earths surface
- 26Vertical Datum (North American Vertical Datum 1993-NAVD 93)A reference level for the elevation of the earth's surface
- 27Coordinate SystemsA set of global latitude and longitude measurements used as a reference system for finding locations.
- 28Map ProjectionThe translation of locations on the three-dimensional (3D) Earth to a two-dimensional (2D) surface.
- 29Cylindrical Conical AzimuthalThree Types of Map Projection:
- 30Normal Transverse ObliqueThree Aspects of Map Projections:
- 311. Area 2. Shape 3. Distance 4. DirectionFour Map Projection Properties:
- 32ConformalMap projection property that preserves the true shape of the feature on the earth's surface, use in small areas of the earth
- 33Equal area or EquivalentMap projection property that preserves the true areal size of a feature on the earth's surface
- 34EquidistantMap projection property that preserves the true direction from one point to another.
- 35AzimuthalMap projection property that preserves the true direction from one point to another
- 36GeoreferencingThe representation of the location of real-world features within the spatial framework of a particular coordinate system. This provides a rigid spatial framework for the positions of real-world features to be measured, computed, recorded, and analyzed.
- 37The ability of GIS to manipulate and analyze georeferencing spatial data.What makes GIS different from CAD and other types of computer graphics systems?
- 38—
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- Flashcards on GIS-EXAM 1 STUDY GUIDE, created by Haley Donald on 07/02/2017.
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- Haley Donald
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