ESRI ESRI Spatial Analysis and Geoprocessing 2 — Questions and Answers
Question 1: What is the difference between the Clip tool and the Intersect tool in ArcGIS Pro?
- Clip retains only the geometry of the input layer within the clip boundary; Intersect retains features and attributes from all input layers (Correct answer)
- Clip keeps all attributes; Intersect removes attributes
- Clip works only on rasters; Intersect works only on vectors
- There is no difference
Correct answer: Clip retains only the geometry of the input layer within the clip boundary; Intersect retains features and attributes from all input layers
Clip extracts input features that fall within the clip boundary but only keeps the input layer's attributes, while Intersect outputs combined geometry and attributes from all input layers.
Question 2: In raster spatial analysis, what does Focal Statistics calculate?
- Statistics for each cell based on a defined neighborhood around it (Correct answer)
- Statistics for the entire raster surface
- Statistics only for cells with NoData values
- The global maximum and minimum values
Correct answer: Statistics for each cell based on a defined neighborhood around it
Focal Statistics calculates a statistic (e.g., mean, sum, range) for each cell using values within a specified neighborhood window.
Question 3: Which geoprocessing environment setting ensures that output rasters align to an existing raster grid?
- Snap Raster (Correct answer)
- Cell Size
- Output Coordinate System
- Extent
Correct answer: Snap Raster
The Snap Raster environment setting aligns the output raster's cell boundaries to match those of a specified existing raster.
Question 4: What does the Weighted Overlay tool in the Spatial Analyst extension allow you to do?
- Combine multiple raster datasets with assigned weights to produce a suitability map (Correct answer)
- Overlay vector polygons to create union output
- Apply symbology weights to a layer
- Calculate weighted averages for attribute fields
Correct answer: Combine multiple raster datasets with assigned weights to produce a suitability map
Weighted Overlay combines multiple rasters by assigning relative importance (weights) to each, producing a composite suitability or risk surface.
Question 5: In ArcGIS Pro, what is the Euclidean Distance tool used for?
- Calculates the straight-line distance from each cell to the nearest source feature (Correct answer)
- Measures the length of vector line features
- Projects coordinates from one system to another
- Identifies the shortest network route
Correct answer: Calculates the straight-line distance from each cell to the nearest source feature
Euclidean Distance computes the straight-line (as-the-crow-flies) distance from each raster cell to the closest source feature.
Question 6: What is the purpose of the Extract by Mask tool in ArcGIS Spatial Analyst?
- Extracts the cells of a raster that correspond to the areas defined by a mask (Correct answer)
- Selects features using a SQL query
- Removes NoData cells from a raster
- Extracts raster bands from a multiband image
Correct answer: Extracts the cells of a raster that correspond to the areas defined by a mask
Extract by Mask clips a raster to a mask area, assigning NoData to cells outside the mask boundary.
ESRI ESRI Spatial Analysis and Geoprocessing 2
What is the difference between the Clip tool and the Intersect tool in ArcGIS Pro?