写一个arcgis工具箱脚本：当连接要素图斑与目标要素图斑重叠面的面积大于多少平方米才能进行空间连接，并导出空间连接后成果

以下是一个基本的ArcGIS工具箱脚本示例，用于连接要素图斑与目标要素图斑：

import arcpy

class ConnectFeatures(object):
    def __init__(self):
        self.label = "Connect Features"
        self.description = "Connects features based on overlap area"
        self.canRunInBackground = False

    def getParameterInfo(self):
        param0 = arcpy.Parameter(
            displayName="Input Features",
            name="input_features",
            datatype="GPFeatureLayer",
            parameterType="Required",
            direction="Input")

        param1 = arcpy.Parameter(
            displayName="Target Features",
            name="target_features",
            datatype="GPFeatureLayer",
            parameterType="Required",
            direction="Input")

        param2 = arcpy.Parameter(
            displayName="Overlap Area Threshold",
            name="overlap_threshold",
            datatype="GPLong",
            parameterType="Required",
            direction="Input")

        param3 = arcpy.Parameter(
            displayName="Output Features",
            name="output_features",
            datatype="GPFeatureLayer",
            parameterType="Required",
            direction="Output")

        params = [param0, param1, param2, param3]

        return params

    def execute(self, parameters, messages):
        input_features = parameters[0].valueAsText
        target_features = parameters[1].valueAsText
        overlap_threshold = parameters[2].valueAsText
        output_features = parameters[3].valueAsText

        # Make feature layers for input and target features
        arcpy.MakeFeatureLayer_management(input_features, "input_lyr")
        arcpy.MakeFeatureLayer_management(target_features, "target_lyr")

        # Select the input features that overlap the target features by at least the overlap threshold
        arcpy.SelectLayerByLocation_management("input_lyr", "INTERSECT", "target_lyr", overlap_threshold)

        # Use spatial join to connect the selected input features to the target features
        arcpy.SpatialJoin_analysis("input_lyr", "target_lyr", output_features)

        return

在此示例中，用户需要提供输入要素图层和目标要素图层的路径，以及一个重叠面积阈值，以决定哪些要素将被连接。工具将使用SelectLayerByLocation和SpatialJoin进行空间连接，并将结果导出到指定的输出要素图层中。

要将此脚本添加到ArcGIS工具箱中，请执行以下步骤：

1. 在ArcGIS中创建一个新的工具箱（右键单击Catalog窗口中的文件夹，然后选择New > Toolbox）。
2. 右键单击新的工具箱，并选择Add > Script。
3. 在Add Script窗口中选择上述脚本文件，然后单击OK。
4. 在工具箱中为新工具命名，并为其指定参数（包括输入和输出要素图层，重叠面积阈值等）。
5. 单击保存，以将工具保存到工具箱中。

现在，用户就可以使用此工具来连接要素图斑和目标要素图斑了。