[GRASS-user] [snap pour point for r.water.outlet]

[Ang Sherpa]

Fixed issue with v.distance instead.

First stream network was converted into vector format. Any coordinate user
enter will be converted into vector on the fly and calculate the v.distance
between stream network and newly formed point vector. Finally, the point
vector will be deleted before the user enter another coordinate.

*Best,*
*Ang Dawa Sherpa*


On Thu, Mar 30, 2017 at 12:06 PM, Ang Sherpa <angsherpa232 at gmail.com> wrote:

> Thanks Johannes,
>
> r.stream.snap does not have attribute table attached and throws an error:
> "DB connection for vector map XXX not defined."
>
> With this case, it won't be of any good use as coordinate of new snaped
> point cannot be extracted for feeding into "r.water.outlet" - coordinate
> field.
>
>
>
> *Best,*
> *Ang Dawa Sherpa*
>
>
> *Regards,*
> *Ang Dawa Sherpa*
> *GIS technician - Irrigation Master Plan*
> *WRPPF - DOI, Nepal Government*
> *Lalitpur*
> *contact: 984 007 3861*
>
> On Thu, Mar 30, 2017 at 11:58 AM, Johannes Radinger <
> johannesradinger at gmail.com> wrote:
>
>> Sorry I ment r.stream.snap...
>>
>> -------- Original message --------
>> From: Ang Sherpa
>> Date:30/03/2017 07:32 (GMT+01:00)
>> To: Johannes Radinger
>> Cc: Helmut Kudrnovsky , GRASS user list
>> Subject: Re: [GRASS-user] [snap pour point for r.water.outlet]
>>
>> Thanks Johannes,
>>
>> Installed. No I have not installed r.stream.order, is it mandatory or
>> ease the process?
>>
>>
>> *Best,*
>> *Ang Dawa Sherpa*
>>
>>
>> On Thu, Mar 30, 2017 at 10:23 AM, Johannes Radinger <
>> johannesradinger at gmail.com> wrote:
>>
>>> Dear Ang Sherpa,
>>>
>>> r.stream.snap is an add-on. So you first need to install it using e.g
>>> g.extension. Have you installed r.stream.order before calling it?
>>>
>>> /j
>>>
>>>
>>> -------- Original message --------
>>> From: Ang Sherpa
>>> Date:30/03/2017 05:34 (GMT+01:00)
>>> To: Helmut Kudrnovsky , GRASS user list
>>> Subject: Re: [GRASS-user] [snap pour point for r.water.outlet]
>>>
>>> Thanks for the link Helmut,
>>>
>>> However, it throws an error stating:
>>> (Thu Mar 30 09:14:55 2017)
>>>
>>> r.stream.snap
>>>
>>> 'r.stream.snap' is not recognized as an internal or external
>>> command,
>>> operable program or batch file.
>>>
>>> I am using  standalone version Grass gis 7.2.0
>>>
>>> *Regards,*
>>> *Ang Dawa Sherpa*
>>> *GIS technician - Irrigation Master Plan*
>>> *WRPPF - DOI, Nepal Government*
>>> *Lalitpur*
>>> *contact: 984 007 3861*
>>>
>>> On Thu, Mar 30, 2017 at 1:03 AM, Helmut Kudrnovsky <hellik at web.de>
>>> wrote:
>>>
>>>> Ang Sherpa wrote
>>>> > Hi users,
>>>> >
>>>> > While using "r.water.outlet" to delineate watershed basin, although
>>>> the
>>>> > coordinates of the stream was noted from google earth and fed into
>>>> > "r.water.outlet" module, it produces plain raster.
>>>> >
>>>> > Is there any solution to make sure that the coordinates of outlet
>>>> point
>>>> > automatically snaps to the nearest line of stream in drainage
>>>> direction
>>>> > map?
>>>>
>>>> what about?:
>>>>
>>>> https://grass.osgeo.org/grass72/manuals/addons/r.stream.snap.html
>>>>
>>>> r.stream.snap - Snap point to modelled stream network.
>>>> Input can be stream network, point vector map with outlets or outlet
>>>> coordinates.
>>>>
>>>>
>>>>
>>>>
>>>> -----
>>>> best regards
>>>> Helmut
>>>> --
>>>> View this message in context: http://osgeo-org.1560.x6.nabbl
>>>> e.com/snap-pour-point-for-r-water-outlet-tp5314835p5314856.html
>>>> Sent from the Grass - Users mailing list archive at Nabble.com.
>>>> _______________________________________________
>>>> grass-user mailing list
>>>> grass-user at lists.osgeo.org
>>>> https://lists.osgeo.org/mailman/listinfo/grass-user
>>>>
>>>
>>>
>>
>
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