Select by location arcgis

This topic covers examples and expected results of the Relationship parameter options available in the Select Layer By Location tool as well as the Spatial Join tool. Within a distance geodesic. Within a distance 3D. Completely contains.

A useful application of this behavior is to select adjacent, connected, or nearby features within a layer. Different Relationship options can be used to generate the desired analysis or result. For details of how the Relationship options differ, see Select By Location: graphical examples. A loop inside a script or For and While iterators in ModelBuilder can be used in conjunction with this approach to expand a selection based on a number of iterations or until some criterion is met. One common criterion is expand until no new features are added to the selection. The Get Count tool can be used to establish when the number of selected features stops changing therefore stops growing. Below are some examples of analysis performed using this functionality with different types of data and relationship options.

Select by location arcgis

The Select By Location tool lets you select features based on their location relative to features in another layer. For instance, if you want to know how many homes were affected by a recent flood, you could select all the homes that fall within the flood boundary. You can use a variety of selection methods to select the point, line, or polygon features in one layer that are near or overlap the features in the same or another layer. Use the following steps to apply the Select By Location tool. Note that you select features from a layer or a set of layers that have a spatial relationship with features from a source layer. For example, select features from USA Counties that touch the boundary of the features in the layer named "Texas. See Types of supported spatial queries below for an overview of the selection options. The following spatial query methods are supported using Select By Location. In these descriptions, the Target layer is the layer in which features are selected. The Source layer is the layer whose features are used to determine the selection based on its spatial relationship to the target.

Discover more on this topic Esri Community Search for related information. The feature types must be the same.

Selects features in a layer based on a spatial relationship to features in another layer. Each feature in the Input Feature Layer is evaluated against the features in the Selecting Features layer or feature class; if the specified Relationship is met, the input feature is selected. Graphic examples of relationships. The input must be a feature layer ; it cannot be a feature class. The coordinate system in which the spatial relationship is evaluated may affect the result. Features that intersect in one coordinate system may or may not intersect in another. This tool evaluates a spatial relationship in the coordinate system of the Input Feature Layer data source the feature class on disk.

A useful application of this behavior is to select adjacent, connected, or nearby features within a layer. Different Relationship options can be used to generate the desired analysis or result. For details of how the Relationship options differ, see Select By Location: graphical examples. A loop inside a script or For and While iterators in ModelBuilder can be used in conjunction with this approach to expand a selection based on a number of iterations or until some criterion is met. One common criterion is expand until no new features are added to the selection. The Get Count tool can be used to establish when the number of selected features stops changing therefore stops growing.

Select by location arcgis

Selects features in a layer based on a spatial relationship to features in another layer. Each feature in the Input Feature Layer is evaluated against the features in the Selecting Features layer or feature class; if the specified Relationship is met, the input feature is selected. Graphic examples of relationships. The input must be a feature layer ; it cannot be a feature class. The coordinate system in which the spatial relationship is evaluated may affect the result. Features that intersect in one coordinate system may or may not intersect in another. This tool evaluates a spatial relationship in the coordinate system of the Input Feature Layer data source the feature class on disk. Set the output coordinate system environment to evaluate the spatial relationship in a different coordinate system.

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The approach of expanding a selection is not limited to polygon layers; it can also be used with line data. For example, if the source feature is the state of Kansas, a feature representing the United States boundary is selected because it completely contains the state of Kansas and does not touch along its boundaries. If there are multiple Input Features parameter values, the counts will be in the same order as the inputs. Click OK to execute the tool and work with your selection results. Specifies whether the spatial relationship evaluation result or the opposite result will be used. Summary Selects features based on a spatial relationship to features in another dataset or the same dataset. In the diagrams, selected features are highlighted in cyan where they intersect, touch, or are contained within the red source features, and so on. For instance, this operator can be used to compare two polygon layers, but comparing a point layer and a polygon layer for identity always returns an empty selection. Are identical to — The features in the input layer will be selected if they are identical in geometry to a selecting feature. If polygons are used for the input or selecting layer, the polygon's boundary line will be used. Contains — The features in the input layer will be selected if they contain a selecting feature. SelectLayerByLocation example 2 stand-alone script The following stand-alone script shows how to use the SelectLayerByLocation function in a workflow to extract features to a new feature class based on location and an attribute query.

Selects features based on a spatial relationship to features in another dataset or the same dataset. Each feature in the Input Features parameter is evaluated using the features in the Selecting Features parameter.

See Types of supported spatial queries below for an overview of the selection options. To be selected, the geometry of the source feature must fall inside the geometry of the target feature including its boundaries. To be selected, the geometry of the target feature must fall inside the geometry of the source feature. When applying selections, a selection of zero records is possible. The source feature must be a polygon or a buffer must be applied around point and line features to use this operator. Unchecked—The evaluation result will be used. To select features based on their spatial relationships to other features in the same layer, see the examples in Select based on spatial relationship within the layer. Within — The features in the input layer will be selected if they are within a selecting feature. Existing selections prior to running the tool were made using a layer definition query, not a selection set. Distance between features will be calculated using a geodesic formula that takes into account the curvature of the spheroid and correctly handles data near and across the dateline and poles.