class Tool(object): def init(self): """定义工具的名称""" self.label = "连接要素工具" self.description = "只连接重叠面积大于指定阈值的要素" self.canRunInBackground = False def getParameterInfo(self): """定义工具参数""" input1 = arcpy.Parameter( displayName="连接要素", name="input1", datatype="GPFeatureLayer", parameterType="Required", direction="Input" ) input2 = arcpy.Parameter( displayName="目标要素", name="input2", datatype="GPFeatureLayer", parameterType="Required", direction="Input" ) threshold = arcpy.Parameter( displayName="重叠面积阈值", name="threshold", datatype="GPLong", parameterType="Required", direction="Input" ) output = arcpy.Parameter( displayName="输出要素类", name="output", datatype="GPFeatureLayer", parameterType="Derived", direction="Output" ) params = [input1, input2, threshold, output] return params def execute(self, parameters, messages): """执行工具逻辑""" # 获取参数 input1 = parameters[0].valueAsText input2 = parameters[1].valueAsText threshold = parameters[2].valueAsText output = parameters[3].valueAsText # 创建空间连接层 arcpy.SpatialJoin_analysis(input1, input2, output, "JOIN_ONE_TO_MANY", "KEEP_ALL") # 提取重叠面积大于阈值的要素 expression = "Join_Count > 0 AND Join_Count*Shape_Area > " + threshold arcpy.MakeFeatureLayer_management(output, "lyr") arcpy.SelectLayerByAttribute_management("lyr", "NEW_SELECTION", expression) # 导出结果 arcpy.CopyFeatures_management("lyr", output)运行错误:SyntaxError: invalid syntax (空间连接.py, line 9) 执行(kj)失败。
时间: 2023-07-02 14:06:04 浏览: 29
你的代码中第9行的注释没有使用正确的格式,应该使用三个双引号,而不是三个单引号。请将第9行修改为:
```
def __init__(self):
"""定义工具的名称"""
self.label = "连接要素工具"
self.description = "只连接重叠面积大于指定阈值的要素"
self.canRunInBackground = False
```
同时,第37行的代码中需要将字符串类型的 `threshold` 转换为整型,可以使用 `int()` 函数。请将第37行修改为:
```
expression = "Join_Count > 0 AND Join_Count*Shape_Area > " + str(int(threshold))
```
修改后再次尝试运行代码。
相关问题
class Person: def __init__(self, name, age): self.name = name self.age = age
def introduce(self):
print(f"My name is {self.name} and I am {self.age} years old.")
class Student(Person):
def __init__(self, name, age, major):
super().__init__(name, age)
self.major = major
def study(self):
print(f"I am studying {self.major}.")
class Teacher(Person):
def __init__(self, name, age, subject):
super().__init__(name, age)
self.subject = subject
def teach(self):
print(f"I am teaching {self.subject}.")
s = Student("John", 20, "Computer Science")
s.introduce() # Output: My name is John and I am 20 years old.
s.study() # Output: I am studying Computer Science.
t = Teacher("Jane", 35, "Math")
t.introduce() # Output: My name is Jane and I am 35 years old.
t.teach() # Output: I am teaching Math.
class SN: def init(self): self.data="" self.datalen="" self.datatype="" self.labels=""这段代码报如下错:TypeError: object of type 'SN' has no len()
这个错误是因为在代码中使用了 len() 函数,但是没有在 SN 类中定义 __len__() 方法。__len__() 方法是 Python 内置的用于获取对象长度的方法,如果没有定义该方法,那么在调用 len() 函数时就会出现 TypeError 错误。
要解决这个问题,可以在 SN 类中定义 __len__() 方法来返回 data 的长度:
```python
class SN:
def __init__(self):
self.data = ""
self.datalen = ""
self.datatype = ""
self.labels = ""
def __len__(self):
return len(self.data)
```
这样,在创建 SN 对象后,就可以使用 len() 函数获取 data 的长度了。