Spatial Data Accuracy and Quality Quiz

What are location errors using primary data sources?

• GPS

• Remote sensing

• Paper maps

What are location errors using secondary data sources?

• Land surveying

• Hardcopy maps

• Scanned maps

What are the sources of secondary data errors?

• Digitizing

• Misinterpretation and quality of the source map

• Coordinate system used

• File format

What are topological errors?

• Errors that occur when spatial relationships are violated.

• Errors that occur due to data entry mistakes.

What is cluster tolerance in ArcGIS?

• A setting that defines the minimum distance between features.

• A method for editing existing features.

What does map topology editing allow users to do?

• Edit shared features simultaneously.

• Create new features from existing features.

What are topology rules in ArcGIS?

• Define spatial relationships between different features.

• Help in creating new features.

What is nontopological editing?

• Editing that modifies features without considering topological relationships.

• Editing that focuses on maintaining spatial relationships.

What is line generalization?

• Simplifying lines by removing extraneous points.

• Adding more points to a line for detail.

What is line smoothing?

• Reshaping lines using mathematical functions.

• Creating jagged lines for visual appeal.