Summarizing by Spatial Relationships Flashcards
What is spatial analysis seven step workflow?
1) Ask Questions.
2) Explore and prepare data.
3) Analyze and model.
4) Interpret results.
5) Repeat or modify.
6) Present Results.
7) Make decisions.
Summarizing Data Methods in Pro: Enrich
Provides demographic and landscape information associated with nearby locations.
Result: A new layer that contains the original input attributes and the user-selected enrichment attributes.
Summarizing Data Methods in Pro: Frequency
Calculates the frequency of attribute values and sums numeric attribute values.
Result: A table that contains frequency and summary results.
Summarizing Data Methods in Pro: Summarize Nearby
Calculates statistics for features that are within one or more specified distances of input layer features. Distance is measured as straight-line or drive-time.
Results: A new layer that contains the original input attributes and the user-selected summary fields. If you designate a group field, the result will also include an output table containing summary data for each attribute type in the group.
Summarizing Data Methods in Pro: Summarize Within
Calculates statistics for features that are located within a polygon layer.
Result: A new layer that contains the original input attributes and the user-selected summary fields. If you designate a group field, the result will also include an output table containing summary data for each attribute type in the group.
Summarizing Data Methods in Pro: Summary Statistics
Calculates statistics for fields in a table.
Result: A table that contains summary results.
Summarizing Data Methods in Pro: Tabulate Intersection
Determines the intersection of two layers and calculates statistics for the intersecting features.
Result: A table that contains summary results.
A realtor wants to emphasize the proximity of available homes to mass transit for potential clients. Which method would the realtor choose to highlight properties that are within a 10-minute, 20-minute, and 30-minute walking distance from the nearest light-rail station?
Summarize Nearby
Which method adds demographic and landscape information to your data?
Enrich
Summarizing data fits into which step of the spatial analysis workflow?
Analyze and model
An analyst wants to use the Summarize Nearby method in ArcGIS Pro to find the number of hospitals within a five-minute driving distance of the state highway. The hospitals are categorized by trauma center level, on a scale from one to five. The dataset includes an attribute field identifying each hospital’s trauma center category. Which step should the analyst take to summarize the number of hospitals by category?
Specify a travel time.
An analyst wants to use the Summarize Within method in ArcGIS Pro to find the average number of libraries located within the boundaries of several cities. Given that the necessary data is available, how would the analyst assign the layers?
Designate the city layer as the input and the library layer as the summary.