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Introduction to Raster Data
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Raster data is pixelated data where each pixel is associated with a specific location.
Raster data always has an extent and a resolution.
The extent is the geographical area covered by a raster.
The resolution is the area covered by each pixel of a raster.
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Introduction to Vector Data
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Vector data structures represent specific features on the Earth’s surface along with attributes of those features.
Vector objects are either points, lines, or polygons.
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Coordinate Reference Systems
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All geospatial datasets (raster and vector) are associated with a specific coordinate reference system.
A coordinate reference system includes datum, projection, and additional parameters specific to the dataset.
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The Geospatial Landscape
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Many software packages exist for working with geospatial data.
Command-line programs allow you to automate and reproduce your work.
The RStudio GUI provides a user-friendly interface for working with R.
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