topic Re: Create network dataset in ArcGIS Pro Questions

Create network dataset

SilviaPanunzi — Tue, 07 Dec 2021 17:44:20 GMT

Messages errors from ServiceArea analysis from Network Analysis:
"The network dataset has no edge elements. It may be unbuilt.
The operation was attempted on an empty geometry"


I tried to 
1) build a network dataset but I didn't know how to do it starting from openstreet basemap so I used a roads shapefiles, containing only fields shape=polygon and length=meters and type=highway ecc..
2) do a service area analysis, importing facility locations and setting 5 kilometers as distance length 

I got the message above. 
Also, I tried to do a location-allocation analysis having as input: facilities locations, demand point (with population field in a column) and the network dataset above created, but of course it doesn't work this too.

Re: Create network dataset

DanPatterson — Tue, 07 Dec 2021 18:02:19 GMT

Create Network Dataset (Network Analyst)—ArcGIS Pro | Documentation

You need polylines for the roads

Re: Create network dataset

SilviaPanunzi — Wed, 08 Dec 2021 15:08:34 GMT

Sorry those are indeed polylines not polygons.

The error I get repeating the analysis is:

Solve
=====================
Parameters

Input Network Analysis Layer Service Area
Ignore Invalid Locations SKIP
Terminate on Solve Error TERMINATE
Simplification Tolerance
Network Analyst Layer Service Area
Solve Succeeded true
Overrides
=====================
Messages

Start Time: mercoledì 8 dicembre 2021 14:41:42
Location "92310" in "Facilities" is unlocated.
(same for many facilities id).......
WARNING 030247: One or more break values could not be reached by one or more facilities.
WARNING 030025: Partial solution generated.
So in the output I do not have any service area at all computed.

Re: Create network dataset

DanPatterson — Wed, 08 Dec 2021 16:33:55 GMT

030247: One or more break values could not be reached by one or more facilities.—ArcGIS Pro | Documentation

030025: Partial solution generated.—ArcGIS Pro | Documentation

for other error messages or warnings, just input the number in the help search ie 030247

Re: Create network dataset

SilviaPanunzi — Wed, 08 Dec 2021 23:15:11 GMT

Sorry, spelling error are indeed polylines with other columns type (highway/service..) and Shape_Length.