Overlay

Integrating two or more data layers into one layer

Intersect (implemented)

Results of this operation include all parts that occurs in all input layers

Input: two or more FeatureDataset

Output: one FeatureDataset

Type: nested iterations

Feature: Intersect operation with 1 feature from dataset A and 1 feature from dataset B can result more than 1 feature

Field: all fields from all input FeatureDatasets are merged into the result FeatureDataset

Union (not implemented)

Results of this operation include all parts that occurs in any input layer

Input: two or more FeatureDataset (must be same GeometryType)

Output: one FeatureDataset

Type: nested iterations

Feature: Union operation with 1 feature from dataset A and 1 feature from dataset B can result more than 1 feature

Field: all fields from all input FeatureDatasets are merged into the result FeatureDataset

Generalization

Dissolve

Aggregates features based on specified attributes

Input: one FeatureDataset, fields that user specified

Output: one FeatureDataset

Type: simple iterations (question)

Feature: many features which have same value(s) in certain field(s) will be merged into one feature

Field: "id" field, the user-specified field(s) (additionally, fields with statistical results)

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