introduction to gis vector data analysis -...
TRANSCRIPT
![Page 1: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/1.jpg)
Introduction to GIS Vector Data Analysis
![Page 2: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/2.jpg)
Vector Data Analysis
• A systematic examination of a problem or complex entity in order to provide new information from what is already known (ESRI – GIS Dictionary)
• Spatial analysis is the process that turns raw input spatial data into value-added useful data or information that ultimately supports decision making and reveals hidden or unknown patterns
– Common vector analysis tools are;
• Buffering
• Overlay
• Other feature manipulation tools ….
![Page 3: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/3.jpg)
Buffering
• Buffer – a region that is less than or equal to a
• specified distance
• Can buffer points, lines and polygons
• Used to examine proximity constraints
• Example:
– Identify potential customers within 3km of store
– Identify parks within 10km of Islamabad Highway
– Identify schools within 5 km of industrial zone
![Page 4: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/4.jpg)
Buffering
![Page 5: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/5.jpg)
Buffering - Variations
![Page 6: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/6.jpg)
Overlay
• Buffer – a region that is less than or equal to a specified distance
• Can buffer points, lines and polygons
• Used to examine proximity constraints
Example:
– Identify potential customers within 3km of store
– Identify parks within 10km of Islamabad Highway
– Identify schools within 5 km of industrial zone
Both layers must have same coordinate systems
![Page 7: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/7.jpg)
Overlay
![Page 8: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/8.jpg)
Overlay
![Page 9: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/9.jpg)
Overlay
![Page 10: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/10.jpg)
Overlay
![Page 11: Introduction to GIS Vector Data Analysis - GREL@ISTgrel.ist.edu.pk/lms/pluginfile.php?file=/2168/mod... · Vector Data Analysis • A systematic examination of a problem or complex](https://reader035.vdocument.in/reader035/viewer/2022062317/5ec549771146c40e7c449569/html5/thumbnails/11.jpg)
Feature Manipulation
• Dissolve
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Feature Manipulation
• Append
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Feature Manipulation
• Select
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Feature Manipulation
• Clip
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Feature Manipulation
• Erase
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Feature Manipulation
• Split