This lesson is still being designed and assembled (Pre-Alpha version)

Day 1: Introduction to Geospatial Concepts

Overview

Teaching: 0 min
Exercises: 0 min
Questions
  • What format should I use to represent my data?

  • What are the main data types used for representing geospatial data?

  • What are the main attributes of raster and vector data?

Objectives
  • Describe the difference between raster and vector data.

  • Describe the stregnths and weaknesses of storing data in raster vs. vector formats.

  • Distinguish between continuous and categorical raster data, and identify types of datasets that would be stored in each format.

  • Describe the three types of vectors and identify types of data that would be stored in each.

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Key Points

  • 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.

  • 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.