[Qgis-user] Least Cost Path

[krishna Ayyala]

Chris,
Again thanks for your reply. I am not sure if my network is proper. I
downloaded this from an online data source. How to fix it, if there are any
errors? Are there any tools in qgis to fix this?

Regards.

On Tue, Feb 4, 2025 at 12:12 PM chris hermansen <clhermansen at gmail.com>
wrote:

> 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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