Create network dataset

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12-07-2021 09:44 AM
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SilviaPanunzi
New Contributor II
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.


 

4 Replies
DanPatterson
MVP Esteemed Contributor

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

You need polylines for the roads


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

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SilviaPanunzi
New Contributor II

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.

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DanPatterson
MVP Esteemed Contributor

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

030025: Partial solution generated.—ArcGIS Pro | Documentation

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


... sort of retired...
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