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Chp. 5/6

Terms in this set (15)

What is the resolution of a raster?
The x and y dimensions of each pixel.
What is a file extension and what does the computer use it for?
3 or 4 letter code that indicates the type of file to show computer which application to associate the file
Can rasters be projected?
Yes, but it take more memory and processing power
Raster data is generally preferred to vector data for:
imagery and satellite data
In the image below, how many feature datasets are present?
Transportation
- cd110
-cd111
-cd112
1 (Transportation)
What types of files can be stored in a Geodatabase?
Raster and vector files
Which of the following would be a good ground control point to use for an aerial photograph of Eckerd?
The intersection of 54th Ave and the eastern lane of the road to campus
Which of the following is likely a discrete raster?
a land use map that was converted from a vector
What is the difference between a feature class and a layer?
A layer file references a feature class and stores info about its properties
What are 2 ways to combine adjacent data sets that are related?
Append and Merge
A data raster must contain:
Analyzable data (the values mean something)
Which of the following would be in the Metadata for a feature class?
All
Tags
Summary
Description and Credits
What does a red exclamation point next to a map layer mean?
Pathname link is broken (someone moved a file)
What is true about Digital Elevation Models (DEM's)
All
They store elevation values
They are continuous
They are data rasters
What is a raster pyramid?
A resampled raster that allows it to be displayed faster
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