PYTHON-arcgis的开发：批量操作字段

最新推荐文章于 2024-04-30 21:59:59 发布

木子正洋

最新推荐文章于 2024-04-30 21:59:59 发布

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本文链接：https://blog.youkuaiyun.com/qq_33409778/article/details/52143088

本文介绍了如何使用Python的arcpy模块批量处理ArcGIS地理数据库中的特征类字段，包括添加新字段、计算字段和更新字段值等操作。重点展示了对方位角字段的处理，通过条件判断和字符串操作，实现根据特定规则更新字段内容。

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#添加arcpy包，这个步骤必不可少
import arcpy
... from arcpy import env
... env.workspace = "D:/资料集/123.gdb"
##########################################################################
... fcList = arcpy.ListFeatureClasses()
... for sf in fcList:
##########################################################################
... arcpy.AddField_management(sf, "date", "TEXT", 9, "", "", "发震日期", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "time", "TEXT", 9, "", "", "发震时刻", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "name", "TEXT", 18, "", "", "地震名称", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "major_axis", "LONG", 9, "", "", "长轴长度", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "minor_axis", "LONG", 9, "", "", "短轴长度", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "direction", "TEXT", 9, "", "", "长轴方向", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "epicenter", "TEXT", 9, "", "", "烈度", "NULLABLE", "NON_REQUIRED")
... arcpy.AddField_management(sf, "area", "TEXT", 9, "", "", "面积", "NULLABLE", "NON_REQUIRED")
##########################################################################
#python的强制类型转换比较容易即str(a)将a转换为string型变量
#这里可