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

[Jurijs Kondratenko]

Hi Sebastian, the WhiteBox Tools looks great! Updating my QGIS (WBT works with QGIS v.3.18+) and hoping it will do the job!

Best wishes, 

Jurijs

 

From: Sebastian Gutwein <bas at rdgland.com> 
Sent: Wednesday, September 8, 2021 5:17 PM
To: C Hamilton <adenaculture at gmail.com>
Cc: Jurijs Kondratenko <yurikondratenko at inbox.lv>; qgis-user <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

 

Just so you know all your options :). There is also the Whitebox Tools plugin for QGIS (you need to install whitebox tools) that has a NaturalNeighourInterpolation algo. "Creates a raster grid based on Sibson's natural neighbour method" 

 

On Wed, Sep 8, 2021 at 10:00 AM C Hamilton <adenaculture at gmail.com <mailto:adenaculture at gmail.com> > wrote:

In addition to what has already been mentioned, you can use the QGIS SAGA Toolbox. Under Raster - Rasterizing, there is a Natural Neighbour algorithm. I have not used it, but I have used the Inverse Distance Weighted algorithm for magnetometry data which in essence does something like what you are wanting to do.

 

Good luck,

Calvin

 

On Wed, Sep 8, 2021 at 4:13 AM Jurijs Kondratenko <yurikondratenko at inbox.lv <mailto:yurikondratenko at inbox.lv> > 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

 

 

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