import arcpy # 输入参数 input_features = arcpy.GetParameterAsText(0) join_field = arcpy.GetParameterAsText(1) target_feature = arcpy.GetParameterAsText(2) target_field = arcpy.GetParameterAsText(3) area_threshold = arcpy.GetParameterAsText(4) # 创建空间连接 arcpy.SpatialJoin_analysis(input_features, target_feature, "in_memory/spatial_join", "JOIN_ONE_TO_ONE", "KEEP_ALL", "", "INTERSECT") # 选择面积大于阈值的连接要素 arcpy.Select_analysis("in_memory/spatial_join", "in_memory/selected_features", "\"Shape_Area\" > " + str(area_threshold) + " SquareMeters") # 统计相同连接字段值的面积总和 arcpy.Statistics_analysis("in_memory/selected_features", "in_memory/summarized_features", "Shape_Area SUM", join_field) # 创建字典，存储连接字段值和对应的面积总和 sum_dict = {} with arcpy.da.SearchCursor("in_memory/summarized_features", [join_field, "SUM_Shape_Area"]) as cursor: for row in cursor: sum_dict[row[0]] = row # 更新目标要素中的字段值 with arcpy.da.UpdateCursor(target_feature, [target_field, join_field]) as cursor: for row in cursor: join_value = row[1] if join_value in sum_dict: area_sum = sum_dict[join_value] row[0] = str(area_sum[1]) cursor.updateRow(row) # 导出结果 arcpy.CopyFeatures_management(target_feature, arcpy.GetParameterAsText(5))运行错误：Traceback (most recent call last): File "D:\实验2\空间连接.py", line 14, in <module> File "c:\program files (x86)\arcgis\desktop10.2\arcpy\arcpy\analysis.py", line 84, in Select raise e ExecuteError: ERROR 000358: 无效的表达式 "Shape_Area" > 600 SquareMeters 执行(Select)失败。 执行(fzzz)失败。请改正代码

在代码中，你使用了字符串形式的表达式来进行选择操作，但是这里的阈值是一个字符串，需要将其转换为数值型数据。

你可以使用以下代码来替换第 14 行：

area_threshold = float(area_threshold.replace(" SquareMeters", ""))

这样就可以将字符串形式的阈值转换为浮点型数据了。

相关问题

input_features = arcpy.GetParameterAsText(0) join_field = arcpy.GetParameterAsText(1) target_feature = arcpy.GetParameterAsText(2) target_field = arcpy.GetParameterAsText(3) area_threshold = arcpy.GetParameterAsText(4)arcpy.CopyFeatures_management(target_feature, arcpy.GetParameterAsText(5))分别是什么意思

这段代码是用来获取工具参数并对数据进行复制的。具体解释如下：

- `input_features`：一个要素类或要素图层，作为加入操作的输入要素。
- `join_field`：用来将输入要素与目标要素类/图层连接的字段。
- `target_feature`：要连接到输入要素的要素类或要素图层。
- `target_field`：用来将目标要素与输入要素连接的字段。
- `area_threshold`：指定连接的最小面积阈值（可选参数）。
- `arcpy.CopyFeatures_management(target_feature, arcpy.GetParameterAsText(5))`：将目标要素类或图层复制到输出要素类或图层中。`arcpy.GetParameterAsText(5)`是用来获取输出要素类的参数。

简而言之，这段代码是用来将两个要素类或图层连接起来，并将结果复制到输出要素类或图层中。

import arcpy# 输入参数 input_features = arcpy.GetParameterAsText(0) # 连接要素 join_field = arcpy.GetParameterAsText(1) # 连接字段 target_feature = arcpy.GetParameterAsText(2) # 目标要素 target_field = arcpy.GetParameterAsText(3) # 目标字段 area_threshold = arcpy.GetParameterAsText(4) # 面积阈值 # 创建空间连接 arcpy.SpatialJoin_analysis(input_features, target_feature, "in_memory/spatial_join", "JOIN_ONE_TO_ONE", "KEEP_ALL", "", "INTERSECT") # 选择面积大于阈值的连接要素 arcpy.Select_analysis("in_memory/spatial_join", "in_memory/selected_features", ""Shape_Area" > " + str(area_threshold)) # 统计相同连接字段值的面积总和 arcpy.Statistics_analysis("in_memory/selected_features", "in_memory/summarized_features", "Shape_Area SUM", join_field) # 创建字典，存储连接字段值和对应的面积总和 sum_dict = {} with arcpy.da.SearchCursor("in_memory/summarized_features", [join_field, "SUM_Shape_Area"]) as cursor: for row in cursor: sum_dict[row[0]] = row # 更新目标要素中的字段值 with arcpy.da.UpdateCursor(target_feature, [target_field, join_field]) as cursor: for row in cursor: join_value = row[1] if join_value in sum_dict: area_sum = sum_dict[join_value] row[0] = str(area_sum) cursor.updateRow(row) # 导出结果 arcpy.CopyFeatures_management(target_feature, arcpy.GetParameterAsText(5))运行错误SyntaxError: invalid syntax (空间连接.py, line 11) 执行(fzzz)失败。请改正代码

根据错误提示，问题出在第11行，可能是语法错误。可以检查一下第11行的代码，看看是否有语法错误。建议将第11行的双引号改成单引号，即将""Shape_Area" > " + str(area_threshold) 改成 ''Shape_Area' > ' + str(area_threshold)，因为在Python中，字符串可以用单引号或双引号表示，但是不能混用。修改后的代码如下：

import arcpy

# 输入参数
input_features = arcpy.GetParameterAsText(0)
# 连接要素
join_field = arcpy.GetParameterAsText(1)
# 连接字段
target_feature = arcpy.GetParameterAsText(2)
# 目标要素
target_field = arcpy.GetParameterAsText(3)
# 目标字段
area_threshold = arcpy.GetParameterAsText(4)
# 面积阈值

# 创建空间连接
arcpy.SpatialJoin_analysis(input_features, target_feature, "in_memory/spatial_join", "JOIN_ONE_TO_ONE", "KEEP_ALL", "", "INTERSECT")

# 选择面积大于阈值的连接要素
arcpy.Select_analysis("in_memory/spatial_join", "in_memory/selected_features", "'Shape_Area' > " + str(area_threshold))

# 统计相同连接字段值的面积总和
arcpy.Statistics_analysis("in_memory/selected_features", "in_memory/summarized_features", "Shape_Area SUM", join_field)

# 创建字典，存储连接字段值和对应的面积总和
sum_dict = {}
with arcpy.da.SearchCursor("in_memory/summarized_features", [join_field, "SUM_Shape_Area"]) as cursor:
for row in cursor:
sum_dict[row[0]] = row

# 更新目标要素中的字段值
with arcpy.da.UpdateCursor(target_feature, [target_field, join_field]) as cursor:
for row in cursor:
join_value = row[1]
if join_value in sum_dict:
area_sum = sum_dict[join_value]
row[0] = str(area_sum)
cursor.updateRow(row)

# 导出结果
arcpy.CopyFeatures_management(target_feature, arcpy.GetParameterAsText(5))