topic Re: Network analysis problem in ArcGIS Network Analyst Questions

Network analysis problem

JörgenFidjeland — Thu, 31 Mar 2011 15:19:28 GMT

Hi!

I'm trying to use the "New route" tool in ArcGIS, but it doesn't work. The error message says
"Warning: No route from location "Graphic Pick 1" to location "Graphic Pick 2".
Error: No solution found.", which is not very informative. I have no idea where I should start troubleshooting.

My network dataset is based on a shapefile from OSM data from haiti.

I'm new to network analysis, so it might be a really silly mistake I've done.. Thanks for all help!

Jörgen

Re: Network analysis problem

AlejandroMata — Thu, 31 Mar 2011 16:55:35 GMT

Hi Jorgen !

The problem that you have can be cause your shapefile (lines) is not correctly connected, at least between the two points that you have. I mean, maybe there is a broken line between the two points y for that reason it says that " Route nor found "

First try to locate two points in a place where you know that the line is not broken to verify that your shapefile it´s ok.

Greetings !

Re: Network analysis problem

JörgenFidjeland — Thu, 31 Mar 2011 18:15:41 GMT

Thanks for the input

I tried this, and sometimes it works (for shorter distances), but mostly the routefinder says there is no possible route even though the points are obviously connected. This is a city, so in many cases there should be plenty of possible routes, but the routefinder says there is none.

For some of the paths, I've noticed that there is no junctions where to lines are crossing, this can be the reason for a few of the incidents, but even in that case, it should be able to make another route around.

Is it possible that the lines are not connected even though they share a junction? I'm confused.

I've uploaded my shapefiles and analysis dataset to here if someone wants to check out. The source of data is openstreetmap.

Re: Network analysis problem

DougSterling — Fri, 01 Apr 2011 19:56:28 GMT

I've uploaded my shapefiles and analysis dataset to here if someone wants to check out. The source of data is openstreetmap.

I downloaded your data and was able to build a Network dataset with the data. There are three issues to be aware of:

1. OSM data establishes connectivity between streets by looking for coincident vertexes. This is not the default connectivity policy for the Network Datasets but this connectivity policy can be changed. In ArcCatalog you can right click on your already built Haiti network dataset, select properties, enable the Connectivity tab of the Network Dataset properties and change the Connectivity policy for your roads_cut source from "End Point" to "Any Vertex".

2. The FT_Meters and TF_Meters fields have been incorrectly calculated. The field values seem to be too small by a factor of ten thousand (10000). You can simply use the Calculate Field GP tool to multiply the current values by 10000 to make them correct (unless there is some reason to leave them as they are).

3. I am unclear on exactly how OSM data intends the oneway field to be used but it seems clear that a field value of "1" means a road can be traversed only in the digitized direction. The default oneway attribute that is generated by the Network Dataset wizard will be incorrect. To fix this you need to:

Bring up the Network Dataset properties

Go to the Attributes tab

Click on the Oneway attribute to select it

Click on the Evaluators button on the right of the dialog

Click on the From-To evaluator

Click on the Evaluator Properties button to the right (the button with the hand on it)

Once you click on the Evaluator Properties button a dialog will appear and you should set the "Value = " portion of the dialog to simply say "false"

Click Ok to close the dialog

You will need to rebuild your Network Dataset after you make these changes. You can do this through the build Network Dataset GP tool or by adding the Network Dataset to ArcMap, enabling the Network Analyst toolbar and pressing the Build Network Dataset button on the toolbar.

Hope this helps.

Re: Network analysis problem

JörgenFidjeland — Mon, 04 Apr 2011 00:09:55 GMT

Thank you so much, dsterling! I will look at this tomorrow at work and check it out.

This GIS-project is a part of a sanitation project at Haiti, aiming to sanitize toiletwater, recycle the nutrients and avoid cholera exposure. This is a part of the logistic work, aiming to make an efficient way of gather toilet water and transport it to farms. Thanks again for the help

Re: Network analysis problem

JörgenFidjeland — Mon, 04 Apr 2011 14:47:55 GMT

Tested it now, works like a charm:) Thanks a lot!

Re: Network analysis problem

ubaid_ullahubaid_ullah — Fri, 20 May 2011 13:09:15 GMT

i am working on my dissertation and i am comparing the impact of network analysis on different data set like open street map, Edina UK and etc.. For me the problem is that i can not directly do network analysis on OSM data.
I found this link
http://www.peterseva.de/Bachelor-Thesis-English.html
http://www.arcgis.com/home/item.html?id=038e21e6a05b415bbb7b485ee4495564
Anyone have idea that how can i get this one

Re: Network analysis problem

JaySandhu — Fri, 20 May 2011 14:12:46 GMT

When you click on the second link (on arcgis.com) you see a picture or map towards the top left. Below that is a link that says "Open". Click on that and it will open a layer package which will start ArcMap and open in it.

If you can't get that to work then try using the following link:
http://www.arcgisonline.com/sharing/content/items/038e21e6a05b415bbb7b485ee4495564/data

Since you are working on a dissertation on impact of Network Analyst, I would be interested in learning more about it.

Regards,
Jay Sandhu

Re: Network analysis problem

AsfawKelbessa1 — Tue, 22 Nov 2011 06:36:49 GMT

Thanks too,
I faced the same problem and solve it through your approach.
thanks a lot.

Re: Network analysis problem

VitaZlender — Sat, 29 Sep 2012 18:09:11 GMT

Hi,
I have the same "Warning" problem, I read through various forums and threads and still havent found the solution.
I am trzing to create bus routes using Network Analyst Layer. I created shape file of the whole bus network and its stops, and also separate shapefiles for each bus line. When I load the stops of each bus line and choose New Route, I get this warning. I have no idea what am I doing wrong, the lines are connected, etc.
If anyone has some ideas, I would appreciate.
Thanks,
vita

Re: Network analysis problem

huynhkim — Fri, 09 Nov 2012 06:48:41 GMT

Dear all!
How do we get information for FT_Meters and TF_Meters; FT_minute and TF_Minute ?
Property of Calculate Geometry: Length disabled

Pls helps me! thanks you very much!

My data <<<here>>>

Re: Network analysis problem

JaySandhu — Fri, 09 Nov 2012 15:37:11 GMT

Your data is not projected. So follow these steps:

Add this data to ArcMap.

Then, right-click on the Layers in the table of contents and choose properties. Click on the Coordinate System tab and then choose an appropriate projection for your data. (e.g. Asia South Albers Equal Area). Click OK.

Now right-click on the data layer and open the attribute table. Right-click on the FT_METERS field and choose Calculate Geometry. Now you can pick Length and Meters unit, click Ok. This will update the FT_METERS with the length in meters for each edge. Do the same with the TF_METERS.

Now you can use the Field Calculator to update the FT_Minute and TF_Minute by using the FT_METERS and additional information such as speed limits, etc.

Also note, your data looks like Open StreetMap data, so make sure to use the AnyVertex connectivity when you create your network dataset.

Jay Sandhu

Re: Network analysis problem

huynhkim — Sun, 11 Nov 2012 10:32:05 GMT

Thank you so much, Jay Sandhu!

Re: Network analysis problem

huynhkim — Mon, 12 Nov 2012 16:01:39 GMT

Dear Jay Sandhu!
I have a list of points on the map. (Ex stores)
I want to do: after selecting an area on a map, --> The selected stores-> Click Network Analyst,....
ArcGIS will automatically set the optimal route.
How can I do, Please Help me!

Re: Network analysis problem

JaySandhu — Mon, 12 Nov 2012 16:31:13 GMT

From the NA toolbar, make sure the NA window is active.
Create a new route analysis layer.
In the NA window, right-click the Stops to Load Locations to load your points.
Bring up the properties of the route layer and on the analysis tab click on the Reorder Stops to find optimal route.
Solve.

I will really suggest that you use the NA tutorials to learn more about NA. Especially the following:
http://resources.arcgis.com/en/help/main/10.1/#/Exercise_3_Finding_the_best_route_using_a_network_dataset/00470000005w000000/

Jay Sandhu

Re: Network analysis problem

huynhkim — Wed, 14 Nov 2012 07:51:36 GMT

Dear Jay Sandhu!
Very very good! thanks so much!

1. After, I create an new network dataset in Arc Catalog. When I open MXD File, arcgis show Add data Window. I want stop this window.

2. In Direction (Route) Window, I want change language default.

How can I do ? Please Helps me!

Re: Network analysis problem

huynhkim — Wed, 14 Nov 2012 11:34:13 GMT

Dear Jay Sandhu!
Very very good! thanks so much!

1. After, I create an new network dataset in Arc Catalog. When I open MXD File, arcgis show Add data Window. I want stop this window.

2. In Direction (Route) Window, I want change language default.

How can I do ? Please Helps me!

Hi! , I fixed problem no 1;
2. In Direction (Route) Window, I want change language default. How can I do ? Please Helps me!

Re: Network analysis problem

KarungiArone — Fri, 26 May 2023 13:49:39 GMT

Thanks alot brother, I faced the same problem with opm data but it has been solved...