Python mapping widget showing parcels queried with a SQL expression. Afeature layercan contain a large number offeatures. To access a subset of these features, you can execute an SQL or spatial query, either to
# Get the URL of the parcel polygon feature layer parcel_fl_props = [n for n in parcel_fabric_flc.layers if n.properties.name == "Tax_PF"] parcels_fl_url = parcel_fl_props[0].url # Get the parcels feature layer parcels_fl = FeatureLayer(parcels_fl_url, gis) # query the feature...
ESRI.ArcGIS.Carto.IFeatureSelection featureSelection = featureLayer as ESRI.ArcGIS.Carto.IFeatureSelection; // Dynamic Cast // Set up the query ESRI.ArcGIS.Geodatabase.IQueryFilter queryFilter = new ESRI.ArcGIS.Geodatabase.QueryFilterClass(); queryFilter.WhereClause = whereClause; // Invalidate only...
The online overview describes how to use ArcGIS API for Python to write Python scripts, incorporating capabilities such as mapping, query, analysis, geocoding, routing, portal administration, and more. Browse the sample notebooks to get started. Rubriques connexes Python in ArcGIS Pro What is ArcPy...
上面的代码首先导入了 FeatureLayer 类,然后使用该类连接到一个要素服务。然后,使用query()方法查询要素,指定查询条件和输出字段。最后,使用features属性遍历查询结果,并将其打印出来。 数据可视化 ArcGIS API for Python 提供了许多用于创建地图、图表和其他可视化效果的函数和方法。例如,可以使用create_map()函数创建一...
import arcpy fc = "D:/St_Johns/data.gdb/roads" # Create a search cursor using an SQL expression # cursor = arcpy.da.SearchCursor(fc, ("roadclass", "name"), """roadclass" = 2""") for row in cursor: # Print the name of the residential road # print(row[1]) Подсказ...
rows=arcpy.SearchCursor(infc) #点的查询游标 for row in rows: if row.NEAR_DIST>0: #距离大于零,表示不相交 cur=arcpy.InsertCursor(infc) #插入游标 new_row = cur.newRow() #创建一个空的新行 #创建一个新的点几何 newpnt=arcpy.Point() newpnt.X=row.NEAR_X #把线上对应点的信息赋值给新点...
da.SearchCursor(fc, ("roadclass", "name"), """roadclass" = 2""") for row in cursor: # Print the name of the residential road # print(row[1]) 提示: 在Python 中,构建由三重引号括起的表达式在读取和理解时都更加容易。 在SQL 表达式中使用 AddFieldDelimiters SQL 表达式中使用的字段分隔符...
如何执行 ArcGIS10.8.2for Desktop 的静默卸载 如果使用 Windows Installer 命令行参数来运行安装程序,则无需通过用户界面 (UI) 即可安装ArcGIS Desktop。 注: ArcGIS Desktop要求 Microsoft Visual C++ 2015–2019 Redistributable (x86) 的最低版本为 14.22.27821。 如果尚未安装 Redistributable,可通过运行 setup.exe...
以下代码显示了发布服务时如何在 Python 脚本中引用此 JSON 文件的内容。 # Demonstrates how to publish a service from a JSON definition file # An MSD file is required, which is made from the MXD in this script # For Http calls import httplib, urllib, json, arcpy, os # For s...