GIS Date Input and Editing Interview Preparation Guide
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GIS Date Input and Editing Interview Questions and Answers will guide now that GIS data represents real world objects (roads, land use, elevation) with digital data. Real world objects can be divided into two abstractions: discrete objects (a house) and continuous fields (rain fall amount or elevation). So learn more about GIS Data with the help of this GIS Date Input and Editing Interview Questions with Answers guide

20 GIS Date Questions and Answers:

1 :: What are the three main types of data error?

1. Errors created by faulty processing.
2. Errors created by human error.
3. Errors from obvious sources (e.g. incomplete maps)
4. Errors created during data input (e.g. digitizing).
5. Errors created by map projection.

Errors from obvious sources (e.g. incomplete maps)
Errors created during data input (e.g. digitizing).
Errors created by faulty processing.
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2 :: What are the common problems faced when obtaining data from secondary sources?

1. Expense
2. Availability of suitable data
3. Unknown data formats
4. Unknown lineage

Availability of suitable data
Unknown lineage
Expense
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3 :: Practical problems faced when scanning map documents include:

1. Selection of appropriate tolerances
2. Lack of suitable raster to vector conversion software
3. Possibility of optical distortion
4. Inclusion of unwanted information

Inclusion of unwanted information
Selection of appropriate tolerances
Possibility of optical distortion
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4 :: Which of the following can be a problem in manual digitizing?

1. Dimensional stability of source documents
2. Hand-eye coordination
3. Availability of suitable hardware and software
4. Boredom
5. Inaccuracies in document registration

Inaccuracies in document registration
Dimensional stability of source documents
Boredom
Hand-eye coordination
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5 :: Which of the following methods may be used to input paper maps into a GIS?

1. Scanning
2. Automatic digitizing
3. Manual digitizing
4. Keyboard entry
5. Tracing

Scanning
Automatic digitizing
Manual digitizing
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6 :: What is the data stream?

1. The process by which raw spatial data is processed into an integrated GIS database
2. The flow of data from one user to another
3. The flow of data from producer to GIS
4. The process by which maps are transferred between GIS platforms.

The process by which raw spatial data is processed into an integrated GIS database
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7 :: Which of the following methods may be used to check attribute data for errors?

1. Checking for extreme values
2. Checking for internal consistency
3. Comparing with other datasets
4. Checking for impossible values

Checking for impossible values
Checking for extreme values
Checking for internal consistency
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8 :: What is rubber sheeting?

1. The process of matching two adjacent map sheets
2. Projecting map data from one coordinate system to another.
3. Stretching map coordinates to fit a series of known control points.

Stretching map coordinates to fit a series of known control points
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9 :: The Douglas-Peucker algorithm is:

1. An algorithm to discretize line segments
2. An algorithm to search an R+ tree
3. An algorithm to discretize an arc
4. An algorithm to triangulate a polygon

An algorithm to discretize line segments
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10 :: Keyboard entry is no longer used in GIS projects.

1. True
2. False

False
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