[Qgis-user] Least Cost Path

[chris hermansen]

Krishna and list,

On Tue, Feb 4, 2025, 10:49 krishna Ayyala <ayyalakrishna at gmail.com> wrote:

> Chris,
> Alternatively, I ran v.net.salesman. Even that is giving following error.
>
> [image: image.png]
>
> [image: image.png]
>
>
> On Tue, Feb 4, 2025 at 11:26 AM krishna Ayyala <ayyalakrishna at gmail.com>
> wrote:
>
>> Chris,
>> Thanks for your reply. When I run shortest path, I am getting the
>> following error.
>>
>> [image: image.png]
>>
>


What makes you think your network is properly formed ie suitable for this
kind of processing?

For example it might need some kind of node - edge topology.

>
>> On Tue, Feb 4, 2025 at 10:57 AM chris hermansen <clhermansen at gmail.com>
>> wrote:
>>
>>> Krishna and list,
>>>
>>> On Tue, Feb 4, 2025 at 9:21 AM krishna Ayyala via QGIS-User <
>>> qgis-user at lists.osgeo.org> wrote:
>>>
>>>> Hello,
>>>> I have  4 points and a road network as shown below. Both are vector
>>>> layers. How can I determine the least cost path for this?I installed the
>>>> "Least-Cost Path" plugin, but that does not work as it needs a raster
>>>> layer. When you get a chance, can you please reply?
>>>>
>>>> Have you looked at any of the several shortest path tools in QGIS?
>>> When I open the  processing toolbox and type "shortest" into the search box
>>> I see:
>>>
>>> [image: image.png]
>>>
>>>
>>>
>>> --
>>> Chris Hermansen · clhermansen "at" gmail "dot" com
>>>
>>> C'est ma façon de parler.
>>>
>>
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