写一个arcgis工具箱脚本：只取连接要素与目标要素图斑重叠面的面积大于多少值参数值才能进行空间连接，并导出空间连接后成果

以下是一个基本的ArcGIS工具箱脚本，它接受输入要素类和一个面积阈值参数，并输出连接后的要素类：

import arcpy

class SpatialJoinTool(object):
    def __init__(self):
        self.label = "Spatial Join Tool"
        self.description = "Joins features based on spatial location."
        self.canRunInBackground = False

    def getParameterInfo(self):
        input_features = arcpy.Parameter(
            displayName="Input Features",
            name="input_features",
            datatype="GPFeatureLayer",
            parameterType="Required",
            direction="Input")
        
        join_features = arcpy.Parameter(
            displayName="Join Features",
            name="join_features",
            datatype="GPFeatureLayer",
            parameterType="Required",
            direction="Input")

        output_features = arcpy.Parameter(
            displayName="Output Features",
            name="output_features",
            datatype="GPFeatureLayer",
            parameterType="Derived",
            direction="Output")

        area_threshold = arcpy.Parameter(
            displayName="Area Threshold",
            name="area_threshold",
            datatype="GPLong",
            parameterType="Required",
            direction="Input")

        params = [input_features, join_features, output_features, area_threshold]
        return params

    def execute(self, parameters, messages):
        # Get input parameters
        input_features = parameters[0].valueAsText
        join_features = parameters[1].valueAsText
        output_features = parameters[2].valueAsText
        area_threshold = parameters[3].value

        # Create a spatial join layer
        join_layer = arcpy.SpatialJoin_analysis(
            target_features=input_features,
            join_features=join_features,
            out_feature_class=output_features,
            join_operation="JOIN_ONE_TO_MANY",
            join_type="KEEP_COMMON",
            match_option="INTERSECT",
            search_radius=None)

        # Filter the joined features based on the area threshold
        with arcpy.da.UpdateCursor(join_layer, ['SHAPE@AREA']) as cursor:
            for row in cursor:
                if row[0] < area_threshold:
                    cursor.deleteRow()

        # Return the joined and filtered layer
        arcpy.SetParameter(2, join_layer)
        return

使用上述代码，您可以创建一个工具箱并将其包含在其中，以使其可用于ArcGIS。该工具箱将输入要素类和连接要素类，然后使用指定的面积阈值执行空间连接。最后，它将输出连接后的要素类。