Podcast
Questions and Answers
What is one of the potential sources of error in a GIS database related to data collection?
What is one of the potential sources of error in a GIS database related to data collection?
Which of the following errors can occur during data input in a GIS database?
Which of the following errors can occur during data input in a GIS database?
What type of error might result from using inappropriate class intervals in data analysis of a GIS database?
What type of error might result from using inappropriate class intervals in data analysis of a GIS database?
Which factor contributes to potential errors in GIS database storage related to numerical precision?
Which factor contributes to potential errors in GIS database storage related to numerical precision?
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How can the instability of the output medium impact the use of results obtained from a GIS database?
How can the instability of the output medium impact the use of results obtained from a GIS database?
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Study Notes
Sources of Error in a GIS Database
Data Collection
- In situ data or field measurements can be affected by equipment or procedural errors
- Existing source maps may contain errors or inaccuracies
- Analysis of remotely sensed data can lead to errors or inaccuracies
Data Input
- Operator error can occur during data input
- Equipment error or accuracy issues can affect data input
- Errors in natural boundaries can be translated to a digital database
Data Storage
- Insufficient numerical precision can lead to errors
- Insufficient spatial precision can affect data accuracy
Data Analysis
- Inappropriate class intervals can lead to errors
- Boundary errors can occur during data analysis
- Error propagation can occur due to multiple overlays
Data Output
- Scaling accuracies can be affected by output devices
- Inaccuracy of output device can lead to errors
- Instability of the output medium can affect data accuracy
Use of Result
- Information may be incorrectly understood or used by the end-user
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Description
Explore common sources of error in a GIS database related to data collection, input, storage, analysis, and output. Learn about inaccuracies that can arise from field measurements, existing source maps, operator errors, and more.
