[GRASS-user] how to overcome gaps in the roads network

[דור פרידמן]

Thanks Micha.

I've tried it in the past, but it messed up the network. I believe that the
gaps are too big (at least some of them), and I kind of hoped for a
miracle. Anyway, I started again with OSM data, which I believe is better
than what I have, though it need some processing.

Thanks again. If someone however have any idea of how to perform the
miracle I was referring to (see my question above),feel free to write back

Best,

Dor

2013/3/28 Micha Silver <micha at arava.co.il>

>  Hi Dor
>
> On 03/28/2013 03:56 PM, דור פרידמן wrote:
>
>  Hi all,
>
> Trying to use v.net.distance or v.net.iso on my network, I have found some
> gaps in it. Namely some roads are cut in the middle, thus distorting the
> results. I am looking for the easiest way (a function or so) to fix,
> overcome such problems/fixing the network, probably using a threshold or so.
>
>
> You can try v.edit tool=snap thresh=...
> The threshold will be in the units of the coordinate system, so probably
> meters.
> But you'll have to be careful. THis might snap road ends that you don't
> want to snap. (like any automated procedure). If, on the other hand, the
> gaps are small, this method might help.
> --
> Micha
>
>  I am aware of 2 hard solutions:
>
>    1. fix it manually
>    2. get a better layer of roads
>
> However, since I'm working on the national scale the first one will take
> forever and the second is problematic due to data scarcity.
>
>
>  Best,
>
>
>  Dor
>
> This mail was received via Mail-SeCure System.
>
>
> _______________________________________________
> grass-user mailing listgrass-user at lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/grass-user
>
> This mail was received via Mail-SeCure System.
>
>
>
>
>
> --
> Micha Silver
> GIS Consultant, Arava Development Co.http://www.surfaces.co.il
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20130328/e7bf6deb/attachment.html>