import arcpy # 获取用户输入参数 input_feature = arcpy.GetParameterAsText(0) # 输入要素 query_expression = arcpy.GetParameterAsText(1) # 查询表达式 output_feature = arcpy.GetParameterAsText(2) # 输出要素 # 构建查询语句 query = "".format(arcpy.AddFieldDelimiters(input_feature, "面积"), query_expression) # 使用查询语句选择要素 arcpy.MakeFeatureLayer_management(input_feature, "lyr") arcpy.SelectLayerByAttribute_management("lyr", "NEW_SELECTION", query) # 将选择的要素导出到输出位置 arcpy.CopyFeatures_management("lyr", output_feature) # 清除选择 arcpy.SelectLayerByAttribute_management("lyr", "CLEAR_SELECTION")运行错误:Traceback (most recent call last): File "D:\多对一空间连接\批量删除小面积.py", line 15, in <module> NameError: name 'output_feature' is not defined 执行(删除小面)失败。请改正代码
时间: 2024-01-22 21:21:24 浏览: 25
代码中定义了变量 `output_feature` 作为输出要素的路径,但是在构建查询语句和导出要素时都没有使用该变量,导致在执行 `arcpy.CopyFeatures_management("lyr", output_feature)` 时出现了 `NameError: name 'output_feature' is not defined` 的错误。
要解决这个问题,需要将 `output_feature` 变量传递给相应的函数,修改后的代码如下:
```python
import arcpy
# 获取用户输入参数
input_feature = arcpy.GetParameterAsText(0) # 输入要素
query_expression = arcpy.GetParameterAsText(1) # 查询表达式
output_feature = arcpy.GetParameterAsText(2) # 输出要素
# 构建查询语句
query = "{} < {}".format(arcpy.AddFieldDelimiters(input_feature, "面积"), query_expression)
# 使用查询语句选择要素
arcpy.MakeFeatureLayer_management(input_feature, "lyr")
arcpy.SelectLayerByAttribute_management("lyr", "NEW_SELECTION", query)
# 将选择的要素导出到输出位置
arcpy.CopyFeatures_management("lyr", output_feature)
# 清除选择
arcpy.SelectLayerByAttribute_management("lyr", "CLEAR_SELECTION")
```
修改后的代码中,将查询语句中的占位符 `{}` 替换为了正确的字段和查询表达式,同时在导出要素时使用了 `output_feature` 变量。