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Questions and Answers
Vector data can only exist in specific locations and can exist independently.
Vector data can only exist in specific locations and can exist independently.
True
Continuous data has clearly defined boundaries.
Continuous data has clearly defined boundaries.
False
Vector data can have geometry types of point, line, and polygon.
Vector data can have geometry types of point, line, and polygon.
True
Polygon consists of at least 4 vertices connected and closed.
Polygon consists of at least 4 vertices connected and closed.
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Raster data represents enclosed areas like dams, lakes, and country boundaries, created from vertices connected with a continuous line.
Raster data represents enclosed areas like dams, lakes, and country boundaries, created from vertices connected with a continuous line.
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Raster data consists of pixels associated with specific geographical locations.
Raster data consists of pixels associated with specific geographical locations.
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Essential raster data formats include Shapefile (SHP), Keyhole Markup Language (KML), and AutoCAD Drawing Exchange Format (DXF).
Essential raster data formats include Shapefile (SHP), Keyhole Markup Language (KML), and AutoCAD Drawing Exchange Format (DXF).
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Raster data formats include Portable Network Graphics (PNG), Joint Photographic Experts Group (JPEG), and Tag Image File Format (TIFF).
Raster data formats include Portable Network Graphics (PNG), Joint Photographic Experts Group (JPEG), and Tag Image File Format (TIFF).
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GRID and IMG are vector GIS file formats developed by Esri.
GRID and IMG are vector GIS file formats developed by Esri.
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USGS Digital Elevation Model (DEM) is widely used for its availability and extensive software support.
USGS Digital Elevation Model (DEM) is widely used for its availability and extensive software support.
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Vector data offers high spatial resolution and accuracy, but it has limitations in representing small objects.
Vector data offers high spatial resolution and accuracy, but it has limitations in representing small objects.
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Raster data offers a smaller file size and resolution independence.
Raster data offers a smaller file size and resolution independence.
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Raster data is made up of pixels, while vector data consists of a series of X,Y coordinates.
Raster data is made up of pixels, while vector data consists of a series of X,Y coordinates.
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Raster data requires greater storage and depends on pixel size for resolution.
Raster data requires greater storage and depends on pixel size for resolution.
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Examples of raster data include elevation and slope maps.
Examples of raster data include elevation and slope maps.
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Examples of vector data include elevation and slope maps.
Examples of vector data include elevation and slope maps.
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Study Notes
Geospatial Data Formats and Representation Summary
- Polygon vector data represents enclosed areas like dams, lakes, and country boundaries, created from vertices connected with a continuous line.
- Raster data consists of pixels associated with specific geographical locations, and rasterization converts vector data to raster data.
- Essential vector data formats include Shapefile (SHP), Keyhole Markup Language (KML), AutoCAD Drawing Exchange Format (DXF), Comma Separated Values (CSV), Geodatabase (GDB), and OpenStreetMap (OSM).
- Raster data formats include Portable Network Graphics (PNG), Joint Photographic Experts Group (JPEG), and Tag Image File Format (TIFF), each with specific compression and usage features.
- GRID and IMG are raster GIS file formats developed by Esri, while USGS Digital Elevation Model (DEM) is widely used for its availability and extensive software support.
- Vector data offers advantages such as topology description, ease of storage, high spatial resolution, accuracy, and aesthetic representation, but it has complexity, time-consuming processing, and compatibility limitations.
- Raster data advantages include a simple data structure, easy simulation, good performance for continuous features, and compatibility with remote sensing images, but it has limitations in representing small objects, generating vast data, and representing topological connections.
- Raster data is made up of pixels, while vector data consists of a series of X,Y coordinates, representing continuous and discrete data respectively.
- Raster data requires greater storage and depends on pixel size for resolution, while vector data offers a smaller file size, a simple data structure, and resolution independence.
- Examples of raster data include elevation and slope maps, while vector data includes points, lines, and polygons.
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Description
Test your knowledge of geospatial data formats and representation with this quiz. Explore the differences between vector and raster data, essential formats such as SHP, KML, PNG, and TIFF, and the advantages and limitations of each data type.
