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Spatial Join Operation

Creates a new layer containing the features from the second layer that match the indicated spatial relation., following this standard:

First Layer Relation Second Layer

The colour convention used to represent the different layers are:

image0

The different Spatial Join Geom operations are:

Contains

Features in the Second Layer lie in the interior of features of the First Layer (the inverse of Within). Example:

image1

Crosses

The Features share some but not all interior points, and the dimension of the intersection is less than that of at least one of the Features. Example:

image2

Disjoint

The Features have no point in common. Example:

image3

Equals

The Features are topologically equal and are overlapped making them match exactly. Example:

image4

Intersects

The Features have at least one point in common (the inverse of Disjoint). Example:

image5

Overlaps

The Features share some but not all points in common, and the intersection has the same dimension as the Features themselves. Example:

image6

Touches

The Features have at least one boundary point in common, but no interior points. Example:

image7

Within

Features in the First Layer lie in the interior of the Features in the Second Layer. Example:

image8

Sample Usage

Go to the Spatial Operations View, and select Join Geom from the Operation drop down. The Join Geom operation’s specific input options will show up.

  1. Select the *First Source Layer*: On the First Layer drop down, select the first Layer you want to Join. By default, the currently selected Layer in the Layers View will be chosen for you.
  2. Select the *Relation*: On the Relation drop down, select the Relation to be used to Join the two layers.
  3. Select the *Second Source Layer*: On the Second Layer drop down, select the second Layer you want to Join. By default, none will be selected.
  4. Select the *Result Layer*: On the Result Layer box, select the name of the Layer you want to create containing the Spatial Join Operation Result. You will be proposed a default name for that Layer.
  5. Perform the operation: Now you’re ready to go. Press the Perform button from the View’s tool bar and the operation will begin.

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