[Qgis-user] How to replicate ARC-GIS Natural Neighbour Interpolation Algorithm in QGIS / DTM from elevation points
Richard McDonnell
richard.mcdonnell at opw.ie
Wed Sep 8 06:43:44 PDT 2021
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
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FRM Data Management
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From: Qgis-user <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>; 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
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Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
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