November 2018
Beginner to intermediate
354 pages
6h 59m
English
Content preview from Hands-On Geospatial Analysis with R and QGIS
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Vector data
Vector data is good for representing categorical and multivariate data. It also has attribute tables where every record or row corresponds to a feature or an object and every column corresponds to different attributes. Vector data has three different types: points, lines, and polygons. Points data normally refers to data collected at some point in space. Points connect to each other to become lines and represent features such as highways, paths of anything, and so on. If those lines add up to make a closed shape, we get a polygon.
One commonly used vector data format is shapefile, which is mainly specific to ArcGIS but is widely used now. Shapefile is used to describe vector features such as points, lines, and polygons. For doing ...
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