Select by location arcgis

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 select by location arcgis 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.

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. If the specified Relationship parameter value is met, the input feature is selected. Learn more about Select By Location including image examples of relationships. If the input is a feature class or dataset path, this tool will create and return a new layer with the result of the tool applied. The coordinate system in which the spatial relationship is evaluated can affect the result. Features that intersect in one coordinate system may not intersect in another.

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. This tool can be used to select features based on their spatial relationships to other features within the same layer. For some examples, see Select by location within a layer. This can be useful for determining if any features matched the desired spatial relationship before proceeding to further analysis as part of an automated workflow that is, script or model. The selection will be applied to this layer. The input cannot be the path to a feature class on disk. The features in the input feature layer will be selected based on their relationship to the features from this layer or feature class. Determines how the selection will be applied to the input and how to combine with an existing selection.

Description: Select features within a distance Import arcpy and set path to data import arcpy arcpy.

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.

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. The following example expands the selection from a single county to select the adjacent counties, then the operation is repeated two times. The example below uses the Intersect relationship to expand a selection from two origin points. The approach of expanding a selection is not limited to polygon layers; it can also be used with line data.

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. This tool can be used to select features based on their spatial relationships to other features within the same layer.

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There are a few other operators that are equivalent to intersect for specific uses, for instance: Are identical to, when comparing point features. The source feature must be a polygon, or you must apply a buffer around point and line features to use this operator. For all the examples below, the following legend applies:. For instance, when using this operator, Wyoming is completely within the United States but Montana is not, as its northern boundaries overlap that of the country. Training Find training related to this topic. The number of selected records will be listed in the geoprocessing history. The Source layer is the layer whose features are used to determine the selection based on its spatial relationship to the target. For some examples, see Select by location within a layer. If one of the features is a polygon, an additional requirement is that no part of the geometry of the other feature can be completely within the geometry of the polygon. A useful application of this behavior is to select adjacent, connected, or nearby features within a layer. Intersect — The features in the input layer will be selected if they intersect a selecting feature.

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.

Completely contains — The features in the input layer will be selected if they completely contain a selecting feature. If one of the features is a polygon, an additional requirement is that no part of the geometry of the other feature can be completely within the geometry of the polygon. The center of the feature is calculated as follows: for polygon and multipoint, the geometry's centroid is used, and for line input, the geometry's midpoint is used. For example, using this operator, the state of Montana is selected even if it shares boundaries with the United States. An additional case is also supported: an interior line or a polygon completely contained within a polygon is selected if its geometry shares line segments, vertices, or endpoints with the polygon boundary. For example, using this operator, Montana is selected even if its boundaries partly overlap that of the country. The number of selected records will be listed in the geoprocessing history. As its name implies, it returns any feature that geometrically shares a common part with the source feature s. To be selected, the geometry of the source feature must fall inside the geometry of the target feature including its boundaries. With this method, the source and target features are considered as sharing a line segment if their geometries have at least two contiguous vertices in common. Set the output coordinate system environment to evaluate the spatial relationship in a different coordinate system. 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. When applying selections, a selection of zero records is possible. Last Published: April 25,