Create Overland Flow Connectors- KeyError 26

lizannewilmot — Wed, 13 Mar 2019 04:59:30 GMT

Roadblock in the create overland connectors

I’ve followed the stormwater documentation from page 1. I have created the. gdb’s and feature datasets as per the recommended method. But when trying to execute I have some warning messages that appear to be fatal.

The first errors happen in Create Drainage Line Structures

When I go to Line 247

# define full path to output layers

if parameters[0].altered and not parameters[0].hasBeenValidated:

247 if not parameters[0].isInputValueDerived():

if parameters[0].value=='':

#Reset output

parameters[2].value=''

parameters[3].value=''

Then 989

#..2 by 2 comparison, on the first loop, line on index 0 is compared with line 1,2, till lOIDs.count-1

iLoopStart = 0

iLoopEnd = len(lOIDs) - 2

for iLoopStart in range(0,iLoopEnd + 1):

iOID = lOIDs[iLoopStart]

with arcpy.da.UpdateCursor(out_drain_lines,[apwrutils.FN_ShapeAt,apwrutils.FN_ShapeAtLength,apwrutils.FN_QCVALUE], sOIDName + "=" + str(iOID)) as rows:

989 for row in rows:

if row[0]:

pointcolpart1 = row[0].getPart(0)

pointcolpartnew = []

for i in pointcolpart1:

pointcolpartnew.append(i)

dlpolyline = dConfLines[iOID]

for nii in range(iLoopStart + 1, len(lOIDs)):

iOID2 = lOIDs[nii]

with arcpy.da.UpdateCursor(out_drain_lines,[apwrutils.FN_ShapeAt,apwrutils.FN_ShapeAtLength,apwrutils.FN_QCVALUE], sOIDName + "=" + str(iOID2)) as rows2:

for row2 in rows2:

#polyline2 = row2[0]

if row2[0]:

pointcolpart2 = row2[0].getPart(0)

pointcolpart2new = []

for i in pointcolpart2:

pointcolpart2new.append(i)

dlpolyline2 = dConfLines[iOID2]

My Python is basic, and I cant work out what the actual issue is.

The final error is, the output cant be opened.

but when I go into catalogue I’m able to open the file path.

I get the same error when doing the next step, Adjust Flow direction in Streams.
same thing, once run I can go into catalogue and open the file path

In all cases, the output data looks consistent to what was produced when I was running the v1 workflow of the stormwater model.

The final error, where I’ve hit a road block was in Create Overland Flow connectors

It appears everything runs fine, but I get keyError 26

It related to a python dictionary item not being defined.

with arcpy.da.UpdateCursor(outletpathstream,["grid_code","SHAPE@"]) as ucursor:

for urow in ucursor:

gridid = ucursor[0]

if gridid>2:

#arcpy.AddMessage("GRIDID" + str(gridid))

part = urow[1].getPart(0)

326 x, y = outletdict[gridid]

#arcpy.AddWarning("x, y " + str(x) + " " + str(y))

part.replace(0, arcpy.Point(x,y))

polyline =arcpy.Polyline(arcpy.Array(part))

urow[1] = polyline

ucursor.updateRow(urow)

I’m going to assume the error in creating the overland flow was due to something being missed during the previous steps.

I’ve tried re-starting the process in a totally new folder.
I’ve tried again from scratch, re-running the arc hydro to get the input streams

I run the tools with the raster data located in a folder (as per the workflow) and through a .gdb

I got a GIS guy from IT to help me debug and we’ve run out of ideas.

Is this something that has been encountered before? Do you have any ideas on how I could do a workaround?

Thanks

Lizanne

Re: Create Overland Flow Connectors- KeyError 26

ChristineDartiguenave — Mon, 18 Mar 2019 19:06:30 GMT

Please install the new patch for 10.6.1 and retest:

The ArcGIS (Desktop, Engine, Server) 10.6.1 Spatial Analyst Patch is now live on the support site. The URL is:
https://support.esri.com/en/download/7685

Christine Dartiguenave

Esri Water Resources Team

Re: Create Overland Flow Connectors- KeyError 26

JenniferPfister — Fri, 16 Oct 2020 19:29:55 GMT

I am still getting no output from the Overland Flow Connectors. Has this been resolved yet? I am running Desktop 10.7.1 Can I move forward without running this tool?

topic Re: Create Overland Flow Connectors- KeyError 26 in Water Resources Questions

Create Overland Flow Connectors- KeyError 26

Re: Create Overland Flow Connectors- KeyError 26

Re: Create Overland Flow Connectors- KeyError 26