Join Adam Wilbert for an in-depth discussion in this video Understanding raster data, part of ArcGIS Essential Training.
- The other popular method of storing geospatial data…is through a process called rasterization.…Raster data is a grid of cells…organized into columns and rows.…Each cell can hold a single color or value…that represents all kinds of information.…From the color of light that's reflected…off a surface, or an elevation above sea level,…or how many inches of rain fell in January.…And as you stack these cells together…into a large gridded surface, they cover an area…of the Earth like a giant chessboard.…The most common raster format that you'll work with…is an aerial photograph, and they're…exactly what you expect them to be.…
A photograph of the Earth taken…from a satellite or an aircraft.…Aerial images go through a process called…orthorectification, which eliminates most of the distortion…that comes from perspective in camera lenses,…and tags the image with location attributes…so that it correctly aligns on the GIS.…The grid of cells each represent an area…of the Earth's surface and take a value…that represents the average return of the coverage area.…
- Getting to know the ArcMap interface
- Geocoding addresses
- Measuring distances
- Adding and importing data
- Labeling and adding graphs
- Editing layer properties
- Seeing multiple views
- Making selections
- Exploring geospatial data with ArcCatalog
- Working with vector and raster data
- Styling the map
- Adding your own data
- Using the ModelBuilder
- Adding a legend and annotations
Skill Level Intermediate
1. Getting Started with a Geographic Information System (GIS)
2. Organizing the Map
3. Working with Data Layers
4. Seeing Multiple Views of the Map
5. Selecting Map Elements
6. Exploring Geospatial Data
7. Geoprocessing Tasks
8. Working with Vector Data
9. Working with Raster Data
10. Styling the Map
11. Creating Your Own Data
12. Exploring the ModelBuilder
13. Finishing the Map
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