topic Re: I want to create a few geoprocesses for each of the rows in a feature in Python Questions

I want to create a few geoprocesses for each of the rows in a feature

OLANIYANOLAKUNLE — Sat, 22 Sep 2012 03:00:29 GMT

I want to create a few geoprocesses for each of the rows in a feature, so that a row gets worked on at a time then when the operations is finished it moves on to the next row till it gets to the last row, I used the script below but its not working; it creates the buffer for all the features first before moving to the next geoprocessing operation instead of creating the output of the two geoprocesses first then move to the next row. Please what im I doing wrong. Thank you.

fc = 'C:/Users/Administrator/Documents/ArcGIS/Default.gdb/Test' field = "OBJECTID" with arcpy.da.SearchCursor(fc, (field)) as cursor: ...     for row in cursor: ...         arcpy.Buffer_analysis("Test", "DataDrivenPage_Bufferz", "14 meters", "FULL", "ROUND", "NONE")      arcpy.Clip_analysis("DataDrivenPage_Bufferz","Test","dd")

Re: I want to create a few geoprocesses for each of the rows in a feature

MarcinGasior — Sun, 12 Dec 2021 03:50:50 GMT

If you want to use single geometry in geoprocessing tools, you have to define it first in a FOR loop:

for row in cursor:
    singleGeom = row.Shape

then use singleGeom variable in a tool as an input:

arcpy.Buffer_analysis(singleGeom,...)

Re: I want to create a few geoprocesses for each of the rows in a feature

OLANIYANOLAKUNLE — Thu, 27 Sep 2012 12:53:06 GMT

Thanks i got the solution for my issues;

See code below

mxd = arcpy.mapping.MapDocument("Current")         df = arcpy.mapping.ListDataFrames(mxd)[0]         fc = 'Database Connections/TDPMode.sde/KWAGISMAIN.DBO.Parcels'         field = "OBJECTID"         field1 = "LGA"         field2 = "District"         field3 = "Block_No"         field4 = "Plot_No"         rows = arcpy.SearchCursor(fc)         row = rows.next()         while row:             val = row.getValue(field)             val1 = row.getValue(field1)             val2 = row.getValue(field2)             val3 = row.getValue(field3)             val4 = row.getValue(field4)             whereClause = '"OBJECTID"' + " = '" + str(val) + "'"             outName = "Block_" + str(val3) + "_Plot_" + str(val4) + "_" + str(val2) + "_Area_of_" + str(val1) + "_LGA" + ".pdf"             path = "C:/Users/Administrator/Documents/ArcGIS/Default.gdb/"             arcpy.SelectLayerByAttribute_management("Parcels", "NEW_SELECTION", whereClause)             arcpy.Buffer_analysis ("Parcels", "DataDrivenPage_Buffer", "14 meters", "FULL", "ROUND", "NONE")             layer_list = "Lines","Parcels","Access_Road_Graphics","Points","Lines_Split"             for layer in layer_list:                 arcpy.SelectLayerByLocation_management(layer, "COMPLETELY_WITHIN", "DataDrivenPage_Buffer", "", "NEW_SELECTION")             exportLayer = "Points", "Lines", "Parcels","Lines_Split","Access_Road_Graphics"             for layer in exportLayer:                 outFC = path + layer + "_New"                  arcpy.Clip_analysis(layer,"DataDrivenPage_Buffer",outFC)                 arcpy.SelectLayerByAttribute_management(layer, "CLEAR_SELECTION")             mxd = arcpy.mapping.MapDocument("current")             lyr = arcpy.mapping.ListLayers(mxd, "Lines_New")[0]             for lblClass in lyr.labelClasses:                 lblClass.SQLQuery = '"ParcelID"' + "=" + str(val)                  arcpy.RefreshActiveView()             arcpy.SelectLayerByAttribute_management("DataDrivenPage_Buffer", "NEW_SELECTION", "OBJECTID = 1")             df.zoomToSelectedFeatures()             mxd = arcpy.mapping.MapDocument("Current")             for df in arcpy.mapping.ListDataFrames(mxd):                 df.rotation = 0             if df.scale <= 400:                  df.scale = 500             if df.scale > 400 and df.scale < 1000:                 df.scale = 1000                 else:                  df.scale = 2000             arcpy.mapping.ExportToPDF(mxd,r"C:\STATE\\Batch\\" + "TDP_For_" + outName)             row = rows.next()

I think i'm improving....:D