import arcpy# 定义输入图层和输出图层input_layer = arcpy.GetParameterAsText(0)output_layer = arcpy.GetParameterAsText(1)# 定义合并条件merge_field = arcpy.GetParameterAsText(2) # 要合并的字段名merge_gap = arcpy.GetParameterAsText(3) # 相邻图斑面积差距# 定义面积筛选条件selection_field = arcpy.GetParameterAsText(4) # 用于筛选的字段名selection_value = arcpy.GetParameterAsText(5) # 筛选条件selection_area = float(arcpy.GetParameterAsText(6)) # 面积筛选阈值# 进行面积筛选arcpy.MakeFeatureLayer_management(input_layer, "layer", "{}='{}' AND SHAPE_AREA > {}".format(selection_field, selection_value, selection_area))# 寻找相邻图斑arcpy.PolygonNeighbors_analysis("layer", "neighbors", ["FID"])# 定义合并列表merge_list = []# 进行合并with arcpy.da.SearchCursor("neighbors", ['src_FID', 'nbr_FID', 'src_{}'.format(merge_field)]) as cursor: for row in cursor: if row[0] < row[1]: src_geom = arcpy.da.SearchCursor("layer", ["SHAPE@"], "FID={}".format(row[0])).next()[0] nbr_geom = arcpy.da.SearchCursor("layer", ["SHAPE@"], "FID={}".format(row[1])).next()[0] if src_geom.area < nbr_geom.area: src_geom, nbr_geom = nbr_geom, src_geom if src_geom.area - nbr_geom.area > merge_gap: merge_list.append(row[0]) merge_list.append(row[1])arcpy.management.Dissolve("layer", output_layer, "{}".format(merge_field), None, "MULTI_PART", "DISSOLVE_LINES")# 删除被合并的图斑with arcpy.da.UpdateCursor(output_layer, ['FID']) as cursor: for row in cursor: if row[0] in merge_list: cursor.deleteRow()运行上面代码报错Traceback (most recent call last): File "D:\实验YY\新建文件夹 (2)\批量合并小图斑.py", line 13, in <module> File "c:\program files (x86)\arcgis\desktop10.2\arcpy\arcpy\analysis.py", line 984, in PolygonNeighbors raise e ExecuteError: 执行失败。参数无效。 ERROR 000732: 输入要素: 数据集 layer 不存在或不受支持 执行(PolygonNeighbors)失败。 执行(批量合并小图斑)失败。请改正代码
时间: 2023-06-27 22:04:19 浏览: 41
根据报错信息,代码中的 "layer" 数据集不存在或不受支持。请检查输入图层参数是否正确,并确保该图层存在于工作空间中。你可以尝试在代码前面添加以下语句,以确认输入图层存在于工作空间:
```
if not arcpy.Exists(input_layer):
arcpy.AddError("输入图层不存在!")
sys.exit()
```
这将检查输入图层是否存在,如果不存在则打印错误消息并退出脚本。同样的,你也可以添加类似的语句来检查输出图层是否存在并进行必要的创建。
相关问题
# 导入需要使用的模块 import arcpy # 设置输入参数 input_features = arcpy.GetParameterAsText(0) # 输入要素类 output_features = arcpy.GetParameterAsText(1) # 输出要素类 minimum_area = arcpy.GetParameterAsText(2) # 面积阈值,单位为平方米 # 将面积阈值转换为浮点型 try: minimum_area = float(minimum_area) except ValueError: arcpy.AddError("面积阈值必须为数字!") sys.exit() # 创建要素图层并添加要素 arcpy.MakeFeatureLayer_management(input_features, "input_layer") arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area)) arcpy.CopyFeatures_management("input_layer", output_features) # 输出结果 arcpy.SetParameterAsText(3, output_features)运行错误:IndentationError: unexpected indent (批量删除小面积.py, line 8) 执行(删除小面)失败。请改正代码
这个错误通常是由于代码的缩进不正确导致的。可以检查一下第8行的缩进是否正确。
正确的代码应该像这样:
```python
# 导入需要使用的模块
import arcpy
# 设置输入参数
input_features = arcpy.GetParameterAsText(0) # 输入要素类
output_features = arcpy.GetParameterAsText(1) # 输出要素类
minimum_area = arcpy.GetParameterAsText(2) # 面积阈值,单位为平方米
# 将面积阈值转换为浮点型
try:
minimum_area = float(minimum_area)
except ValueError:
arcpy.AddError("面积阈值必须为数字!")
sys.exit()
# 创建要素图层并添加要素
arcpy.MakeFeatureLayer_management(input_features, "input_layer")
arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area))
arcpy.CopyFeatures_management("input_layer", output_features)
# 输出结果
arcpy.SetParameterAsText(3, output_features)
```
import arcpy import sys # 设置输入参数 input_features = arcpy.GetParameterAsText(0) # 输入要素类 output_features = arcpy.GetParameterAsText(1) # 输出要素类 minimum_area = arcpy.GetParameterAsText(2) # 面积阈值,单位为平方米 # 将面积阈值转换为浮点型 try: minimum_area = float(minimum_area) except ValueError: arcpy.AddError("面积阈值必须为数字!") sys.exit() # 创建要素图层并添加要素 arcpy.MakeFeatureLayer_management(input_features, "input_layer") arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area)) arcpy.CopyFeatures_management("input_layer", output_features) # 输出结果 arcpy.SetParameterAsText(3, output_features)运行错误:IndentationError: unexpected indent (批量删除小面积.py, line 8) 执行(删除小面)失败。请改正代码
这个错误是由于代码的缩进不正确导致的,建议按照以下方式修改代码:
```python
import arcpy
import sys
# 设置输入参数
input_features = arcpy.GetParameterAsText(0)
# 输入要素类
output_features = arcpy.GetParameterAsText(1)
# 输出要素类
minimum_area = arcpy.GetParameterAsText(2)
# 面积阈值,单位为平方米
# 将面积阈值转换为浮点型
try:
minimum_area = float(minimum_area)
except ValueError:
arcpy.AddError("面积阈值必须为数字!")
sys.exit()
# 创建要素图层并添加要素
arcpy.MakeFeatureLayer_management(input_features, "input_layer")
arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area))
arcpy.CopyFeatures_management("input_layer", output_features)
# 输出结果
arcpy.SetParameterAsText(3, output_features)
```
这样就可以避免缩进错误了。