arcpy中如何shp批量分组导出kml
时间: 2024-12-02 11:28:14 浏览: 33
arcpy按属性导出shp.zip
在ArcGIS Pro或Desktop环境中,你可以使用Python的arcpy模块来处理Shapefile (shp) 文件并批量按某个字段进行分组导出为KML文件格式。这里是一个基本步骤:
1. **安装和导入所需的库**:
首先,确保已经安装了`arcpy`, `os`, 和`datetime`等库,如果没有可以使用下面命令安装:
```
!pip install arcgis
```
2. **加载数据和确定分组字段**:
```python
import arcpy
# 加载Shapefile
input_shp = "path_to_your_shapefile.shp"
feature_class = arcpy.mp.FeatureClass.to_featureclass(input_shp)
# 确定你要使用的分组字段
group_field = "your_grouping_field" # 替换为实际字段名
```
3. **创建临时表和对数据进行分组**:
```python
# 创建临时表以便于处理
temp_table = r"C:\temp\temp_table.gdb\temp_group_table"
arcpy.management.CopyRows(feature_class, temp_table)
# 对数据按指定字段进行分组
arcpy.management.GroupBy(temp_table, group_field)
```
4. **遍历分组结果,分别导出每个组到KML**:
```python
output_folder = "path_to_output_kmls_folder"
os.makedirs(output_folder, exist_ok=True)
for group in arcpy.da.SearchCursor(temp_table, ["FID", group_field]):
group_id = group[0]
group_name = group[1]
# 构建KML文件名
kml_file = f"{output_folder}\\{group_name}.kml"
# 使用arcpy.CreateFeatureclass_management创建KML
arcpy.management.CreateFeatureclass(output_folder, f"{group_name}", "POINT", spatial_reference=feature_class.spatialReference)
# 将当前组内的点添加到新KML文件
with arcpy.da.UpdateCursor(temp_table, ["SHAPE@"]) as cursor:
for feat in cursor:
if feat[0].FID == group_id:
feat[0].shape.name = group_name
arcpy.InsertCursor(kml_file).insertRow(feat)
```
5. **清理工作**:
```python
# 删除临时表
arcpy.management.Delete(temp_table)
```
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