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。请改重新正代码

这个错误提示是因为在执行`PolygonNeighbors_analysis`时，输入的要素图层`layer`不存在或不受支持。可能是因为之前的筛选条件没有筛选出任何图斑，导致后续操作无法进行。建议检查一下`MakeFeatureLayer_management`函数中的筛选条件是否正确，尝试调整一下阈值，看是否能找到符合条件的图斑。

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：

# 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：

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。