Web好的，以下是使用 Lua 语言中的 split 函数将文件路径分割出来的示例代码： ```lua function split(str, delimiter) local result = {} local from = 1 local delim_from, delim_to = string.find(str, delimiter, from) while delim_from do table.insert(result, string.sub(str, from, delim_from - 1)) from = delim_to + 1 delim_from, delim_to = string.find(str, delimiter, from) end ... WebSep 11, 2014 · with arcpy.da.SearchCursor (fc, fields) as cursor: for row in cursor: print (' {0}, {1}, {2}'.format (row [0], row [1], row [2])) But rather than using a cursor, perhaps a better way to check if the query returns anything is shown in the Make Query Table example 2:
Solved: Find max value in a field. - Esri Community
WebJul 22, 2015 · I have tried these two approaches: cursor = arcpy.da.SearchCursor ("Table", "Field", "Field = 'Value'") if not cursor: #Do something. if cursor == None: #Do something. In both cases the code in the if statement is never executed even if the cursor contains no rows. The documentation mentions no method like .count () or .empty (). WebJun 21, 2013 · When querying NULL values, you will want to use the syntax "Field IS NULL". You will also want to iterate through your fields list and set the query up for each field name. Here is an example: import arcpy from arcpy import env env.workspace = r"C:\temp\python\test.gdb" fields = ["OBJECTID", "Name", "Address"] for dirpath, … c town wings catering menu
How to use ArcPy to Check if Search Cursor Returns Anything
WebApr 11, 2024 · from shapely.geometry import LineString, Point, MultiLineString import arcpy # Set up input feature classes lines_fc = r"C:\test\test.gdb\lines" points_fc = r"C:\test\test.gdb\points" # Define a function to extract x and y coordinates of each vertex of a line def get_line_vertices(line_geometry): x_coords = [] y_coords = [] for part in line ... WebSep 10, 2024 · 1 Your process works for me using ArcGIS Online Advanced Notebooks. You've only provided a snippet of your code. My only suggestion is to check the table variable you're passing into the SearchCursor and make sure it's correct. Per the error, it seems like it's just the URL as I've used it.... so its hard to say. Web徐艇伟，张彦(1.重庆数字城市科技有限公司，重庆 400020； 2.重庆市地理信息云服务企业工程技术研究中心，重庆 400020)1 引 c tows3ub