解析with arcpy.da.InsertCursor(output + "\\" + out_name,["SHAPE@XY"]) as cursor:
时间: 2023-07-08 11:45:22 浏览: 53
这段代码使用了Python中的with语句,它可以自动管理资源的分配和释放。在这里,with语句确保我们使用完InsertCursor对象后自动释放它。
arcpy.da.InsertCursor是一个用于将数据插入到要素类中的类。在这里,我们使用InsertCursor来将数据插入到一个名为"output + "\\" + out_name"的要素类中。
["SHAPE@XY"]是InsertCursor中的一个参数,它定义了我们要插入的字段。在这里,我们只插入一个类型为"Point"的要素,所以我们只需要插入一个字段"SHAPE@XY"。这个字段包含了点的坐标信息。
最后,我们使用"as cursor"来给InsertCursor对象起一个名字"cursor",这样我们就可以在with语句块内使用这个对象了。
相关问题
import arcpy # 输入数据路径和名称 input_fc = arcpy.GetParameterAsText(0) # 设置删除的面积阈值 threshold_str = arcpy.GetParameterAsText(1) threshold = float(threshold_str) # 输出数据路径和名称 output_fc = arcpy.GetParameterAsText(2) # 创建一个新的要素类,作为输出 arcpy.CreateFeatureclass_management( out_path=os.path.dirname(output_fc), out_name=os.path.basename(output_fc), geometry_type="POLYGON", spatial_reference=input_fc ) # 打开输入要素类的游标 with arcpy.da.SearchCursor(input_fc, ["SHAPE@", "SHAPE_Area"]) as cursor: # 打开输出要素类的游标 with arcpy.da.InsertCursor(output_fc, ["SHAPE@"]) as icursor: # 遍历每一个要素 for row in cursor: # 如果面积小于阈值,则跳过 if row[1] < threshold: continue # 否则将要素插入到输出要素类中 icursor.insertRow([row[0]])运行错误:IndentationError: unexpected indent (批量删除小面积.py, line 11) 执行(删除小面)失败。请改正代码
该代码的问题在于第11行的缩进有误,应该把该行缩进调整到与前面的代码对齐。正确的代码如下:
```python
import arcpy
# 输入数据路径和名称
input_fc = arcpy.GetParameterAsText(0)
# 设置删除的面积阈值
threshold_str = arcpy.GetParameterAsText(1)
threshold = float(threshold_str)
# 输出数据路径和名称
output_fc = arcpy.GetParameterAsText(2)
# 创建一个新的要素类,作为输出
arcpy.CreateFeatureclass_management(
out_path=os.path.dirname(output_fc),
out_name=os.path.basename(output_fc),
geometry_type="POLYGON",
spatial_reference=input_fc
)
# 打开输入要素类的游标
with arcpy.da.SearchCursor(input_fc, ["SHAPE@", "SHAPE_Area"]) as cursor:
# 打开输出要素类的游标
with arcpy.da.InsertCursor(output_fc, ["SHAPE@"]) as icursor:
# 遍历每一个要素
for row in cursor:
# 如果面积小于阈值,则跳过
if row[1] < threshold:
continue
# 否则将要素插入到输出要素类中
icursor.insertRow([row[0]])
```
请注意,在Python中,缩进是非常重要的,因为它决定了代码的执行顺序。因此,必须谨慎地检查代码中的缩进是否正确。
import arcpy # 定义工具参数 input_features = arcpy.GetParameterAsText(0) target_features = arcpy.GetParameterAsText(1) output_features = arcpy.GetParameterAsText(2) overlap_area = arcpy.GetParameterAsText(3) # 定义空间参考 spatial_reference = arcpy.Describe(input_features).spatialReference # 创建空图层来存储连接后的要素 arcpy.CreateFeatureclass_management("in_memory", "connected_features", "POLYLINE", spatial_reference) # 开始连接 with arcpy.da.SearchCursor(input_features, ["OID@", "SHAPE@"]) as input_cursor: with arcpy.da.SearchCursor(target_features, ["OID@", "SHAPE@"]) as target_cursor: with arcpy.da.InsertCursor("in_memory/connected_features", ["SHAPE@"]) as output_cursor: for input_row in input_cursor: for target_row in target_cursor: # 检查两个要素之间是否有重叠面 if input_row[1].overlaps(target_row[1]): intersection = input_row[1].intersect(target_row[1], 4) area = intersection.area # 如果重叠面积大于或等于指定值,则连接两个要素 if area >= float(overlap_area): polyline = arcpy.Polyline(input_row[1], target_row[1]) output_cursor.insertRow([polyline]) target_row = None input_row = None # 导出连接后的要素 arcpy.CopyFeatures_management("in_memory/connected_features", output_features) # 清理内存 arcpy.Delete_management("in_memory")运行错误IndentationError: unexpected indent (空间连接.py, line 15) 执行(kj)失败。请改正代码
这是一个缩进错误,可能是由于复制代码时导致的。请尝试将第15行的缩进调整到与前面的代码行相同的位置。以下是已经修复缩进错误的代码:
```python
import arcpy
# 定义工具参数
input_features = arcpy.GetParameterAsText(0)
target_features = arcpy.GetParameterAsText(1)
output_features = arcpy.GetParameterAsText(2)
overlap_area = arcpy.GetParameterAsText(3)
# 定义空间参考
spatial_reference = arcpy.Describe(input_features).spatialReference
# 创建空图层来存储连接后的要素
arcpy.CreateFeatureclass_management("in_memory", "connected_features", "POLYLINE", spatial_reference)
# 开始连接
with arcpy.da.SearchCursor(input_features, ["OID@", "SHAPE@"]) as input_cursor:
with arcpy.da.SearchCursor(target_features, ["OID@", "SHAPE@"]) as target_cursor:
with arcpy.da.InsertCursor("in_memory/connected_features", ["SHAPE@"]) as output_cursor:
for input_row in input_cursor:
for target_row in target_cursor:
# 检查两个要素之间是否有重叠面
if input_row[1].overlaps(target_row[1]):
intersection = input_row[1].intersect(target_row[1], 4)
area = intersection.area
# 如果重叠面积大于或等于指定值,则连接两个要素
if area >= float(overlap_area):
polyline = arcpy.Polyline(input_row[1], target_row[1])
output_cursor.insertRow([polyline])
target_row = None
input_row = None
# 导出连接后的要素
arcpy.CopyFeatures_management("in_memory/connected_features", output_features)
# 清理内存
arcpy.Delete_management("in_memory")
```