Geoprocessing tool that uses a select expression to extract features from one feature class and output them to a new feature class.
The select or SQL expression is built with the Query Builder or is typed in. For details on the expression syntax, see Write a query in the query builder or SQL reference for query expressions used in ArcGIS.
If a layer is used for Input Features and no expression is entered, only the selected features are written to the output feature class. If a layer is used for Input Features and an expression is entered, the expression is only executed against the selected features, and the expression-based subset of the selected set is written to the output feature class.
If you want to create a feature class from the selected set of features in a layer, use the Copy Features tool.
| Parameter | Explanation |
|---|---|
| in_features | The input feature class or layer from which features are selected. |
| out_feature_class (Optional) | The output feature class to be created. If no expression is used, it contains all input features. |
| where_clause (Optional) | An SQL expression used to select a subset of features. |
| esri_out_feature_service_name (Optional) | The name of the optional feature service to create on the federated server containing the result of this tool. If no name is specified an output feature service will not be created. |
Select example 1 (Python window)
The following Python window script demonstrates how to use the Select function in immediate mode.
import arcpy
arcpy.env.workspace = "C:/data"
arcpy.Select_analysis("majorrds.shp", "C:/output/majorrdsClass4.shp", '"CLASS" = \'4\'')
Select example 2 (stand-alone script)
The following Python script demonstrates how to use the Select function in a stand-alone script.
# Name: Select_Example2.py
# Description: Select roads of Class 4 from major roads tin the gnatcatcher habitat study area
# Import system modules
import arcpy
# Set workspace
arcpy.env.workspace = "C:/data"
# Set local variables
in_features = "majorrds.shp"
out_feature_class = "C:/output/majorrdsClass4.shp"
where_clause = '"CLASS" = \'4\''
# Execute Select
arcpy.Select_analysis(in_features, out_feature_class, where_clause)
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