[Qgis-user] How to replicate ARC-GIS Natural Neighbour Interpolation Algorithm in QGIS / DTM from elevation points

[Jurijs Kondratenko]

Hi Richard, thanks a lot for your reply. I’m not sure about GDALDEM (quick
search told it was more for visualisation) but will check more. Nearets
Neighbour in Rastre-Analysis-Grid (Nearest Neighbour) is not quite what I’m
looking for: seems WhiteBox Tools will solve my need

 

From: Richard McDonnell <richard.mcdonnell at opw.ie> 
Sent: Wednesday, September 8, 2021 4:44 PM
To: Micha Silver <tsvibar at gmail.com>; Jurijs Kondratenko
<yurikondratenko at inbox.lv>; qgis-user at lists.osgeo.org
Subject: RE: [Qgis-user] How to replicate ARC-GIS Natural Neighbour
Interpolation Algorithm in QGIS / DTM from elevation points

 

Hi, 

In addition to what Jurijsy suggested you can also use gdaldem. You can
access this in QGIS by selecting Raster from the toolbar and the selecting
Analysis and Grid Nearest Neighbour. If using Windows and an OSGeo4W
install, you can utilise the OSGeo4W Shell to run the same command via
command line.

Regards,


Richard

 

 



——
Richard McDonnell MSc GIS, FME Certified Professional
FRM Data Management

——
Oifig na nOibreacha Poiblí
Office of Public Works

Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://gov.ie/opw

——
To send me files larger than 30MB, please use the link below
https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie

Email Disclaimer:
https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/ 

From: Qgis-user <qgis-user-bounces at lists.osgeo.org
<mailto:qgis-user-bounces at lists.osgeo.org> > On Behalf Of Micha Silver
Sent: 08 September 2021 14:04
To: Jurijs Kondratenko <yurikondratenko at inbox.lv
<mailto:yurikondratenko at inbox.lv> >; qgis-user at lists.osgeo.org
<mailto:qgis-user at lists.osgeo.org> 
Subject: Re: [Qgis-user] How to replicate ARC-GIS Natural Neighbour
Interpolation Algorithm in QGIS / DTM from elevation points

 

If your'e willing to try GRASS GIS, then the module v.surf.nnbathy should
help.

https://grass.osgeo.org/grass78/manuals/addons/v.surf.nnbathy.html

 

 

On 9/8/21 11:08 AM, Jurijs Kondratenko wrote:

Hi, I’m building a DTM from random points (with different distances in
between) and I like ArcGIS Natural Neighbour algorithm for doing so.

Is there any way to replicate it in QGIS?
https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/how-
natural-neighbor-works.htm

Alternatively, what would be a way to constructing DTM from points,
preserving the original points in respective pixels?

Thank you!

Jurijs Kondratenko

Riga Technical University

 

 

 

_______________________________________________
Qgis-user mailing list
Qgis-user at lists.osgeo.org <mailto:Qgis-user at lists.osgeo.org> 
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20210908/ebcb3987/attachment.html>