[Qgis-user] Least Cost Path

[chris hermansen]

Krishna and list,

On Tue, Feb 4, 2025 at 12:43 PM krishna Ayyala <ayyalakrishna at gmail.com>
wrote:

> Chris,
> Its nothing to do with the number of points. I got the same error when I
> ran with 160 points.I also went to the study manual of v.net.salesman. The
> network and points are as per their guidelines.
> [image: image.png]
>

These are different errors.  You are supplying at least one incorrect input
argument (see the <points> is not a valid parameter) and your input file
"outputla.. etc..." is not found.

I don't know what else to say, these messages seem pretty self-explanatory
and there's no other info here to work with.

>
> On Tue, Feb 4, 2025 at 1:08 PM chris hermansen <clhermansen at gmail.com>
> wrote:
>
>> Krishna and list,
>>
>> On Tue, Feb 4, 2025 at 11:49 AM krishna Ayyala <ayyalakrishna at gmail.com>
>> wrote:
>>
>>> I also ran v.clean on the network. Then ran v.net.salesman on the
>>> cleaned network. That did not help. Getting the same error message. Is
>>> there a fix for this? I wish to run  v.net.salesman without any errors.
>>>
>>> On Tue, Feb 4, 2025 at 12:15 PM krishna Ayyala <ayyalakrishna at gmail.com>
>>> wrote:
>>>
>>>> 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]
>>>>>>
>>>>>>
>> Look at the message - Number of cities: 0 / ERROR: Not enough cities (< 2)
>>
>> This tells you that your data is not properly set up.
>>
>> Study the manual page for v.net.salesman here:
>> https://grass.osgeo.org/grass-stable/manuals/v.net.salesman.html
>>
>> There is a sample of v.net.salesman usage there which explains clearly
>> how to set things up.  Note creation of cities to visit and use of v.net
>> to create the network prior to running v.net.salesman.
>>
>>
>> --
>> Chris Hermansen · clhermansen "at" gmail "dot" com
>>
>> C'est ma façon de parler.
>>
>

-- 
Chris Hermansen · clhermansen "at" gmail "dot" com

C'est ma façon de parler.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250204/b6d8d67d/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 11390 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250204/b6d8d67d/attachment-0003.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 35158 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250204/b6d8d67d/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 42076 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250204/b6d8d67d/attachment-0005.png>