Error when using insert cursor and search cursor to output point feature

OveringUMD — Wed, 05 Jul 2023 20:38:58 GMT

Traceback (most recent call last):
  File "<string>", line 95, in execute
TypeError: cannot alter multipart geometry type

I am getting the above error for my .pyt toolbox. The Toolbox takes a Polyline feature, finds the point between the start and end point of the polyline and is supposed to output a point feature class. I am not sure what is going wrong.

code:

## EDITS MADE BASED OFF COMMENTS, STILL THE SAME ERROR

import arcpy import os class Toolbox(object): def __init__(self): """Define the toolbox (the name of the toolbox is the name of the .pyt file).""" self.label = "Create Door Centroids 2" self.alias = "Create Door Centroids 2" # List of tool classes associated with this toolbox self.tools = [Centroid] class Centroid(object): def __init__(self): """Define the tool (tool name is the name of the class).""" self.label = "Create Door Centroids" self.description = "Create Door Centroids" self.canRunInBackground = False def getParameterInfo(self): """Define parameter definitions""" door_layer = arcpy.Parameter( displayName="Door Feature Layer (LINE)", name="door_fc", datatype="GPFeatureLayer", parameterType="Required", direction="Input" ) door_layer.filter.list = ['LINE'] centroid_layer = arcpy.Parameter( displayName="Door Centroid Feature Layer (Output)", name="doors_fc", datatype="GPFeatureLayer", parameterType="Required", direction="Output" ) centroid_layer.filter.list = ['POINT'] params = [door_layer, centroid_layer] return params def isLicensed(self): """Set whether tool is licensed to execute.""" return True def updateParameters(self, parameters): """Modify the values and properties of parameters before internal validation is performed. This method is called whenever a parameter has been changed.""" return def updateMessages(self, parameters): """Modify the messages created by internal validation for each tool parameter. This method is called after internal validation.""" return def execute(self, parameters, messages): """The source code of the tool.""" door_layer = parameters[0].valueAsText outFC = parameters[1].valueAsText spatial_reference = arcpy.Describe(door_layer).spatialReference # create output feature class out_name = os.path.basename(outFC) out_path = os.path.dirname(outFC) arcpy.management.CreateFeatureclass(out_path, out_name, "POLYLINE", None, "DISABLED", "DISABLED", spatial_reference) # add field arcpy.management.AddField(outFC, "floor_id", "TEXT") arcpy.management.AddField(outFC, "room_type", "TEXT") with arcpy.da.InsertCursor(outFC, [ "SHAPE@", "floor_id", "room_type"]) as icursor: with arcpy.da.SearchCursor(door_layer, [ "OID@", "SHAPE@","FIRST_floor_id", "FIRST_room_type",]) as scursor: for row in scursor: door_line = row[1] point1 = door_line.firstPoint point2 = door_line.lastPoint x1 = point1.X y1 = point2.Y x2 = point2.X y2 = point2.Y newX = (x1+x2)/2 newY = (y1+y2)/2 pt = arcpy.Point(newX, newY) arcpy.AddMessage(point1) arcpy.AddMessage(newX) arcpy.AddMessage(pt) pt_geometry = arcpy.PointGeometry(pt, spatial_reference) row_pt = (pt_geometry, row[2], row[3]) icursor.insertRow(row_pt) return

Re: Error when using insert cursor and search cursor to output point feature

ChrisRingo — Wed, 05 Jul 2023 20:39:59 GMT

In your scursor loop you've got "row" as the index, but then you're redefining "row" at the bottom of the scursor loop. I think you want to assign a different variable there - something like:

"row_pt = ( row[0], pt_geometry, row[2], row[3])"

icursor.insertRow(row_pt)

Also, it looks like your row insertion is attempting to assign an OID to the inserted record - it seems to me that since the OID is assigned by Arc you may not be able to do that, though I may be wrong on that.

Re: Error when using insert cursor and search cursor to output point feature

OveringUMD — Wed, 05 Jul 2023 20:40:09 GMT

Hi Chris, thanks for the suggestion. I made the changes (see updated post), but I am still getting the same error

Re: Error when using insert cursor and search cursor to output point feature

ChrisRingo — Wed, 05 Jul 2023 22:13:44 GMT

Looks like you've created your outFC as POLYLINE (line 71), but you want to write point geometries to it?

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Error when using insert cursor and search cursor to output point feature

Re: Error when using insert cursor and search cursor to output point feature

Re: Error when using insert cursor and search cursor to output point feature

Re: Error when using insert cursor and search cursor to output point feature