Hi Richard, thanks a lot for your reply. Im 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 Im looking for: seems WhiteBox Tools will solve my need
From: Richard McDonnell <richard.mcdonn...@opw.ie> Sent: Wednesday, September 8, 2021 4:44 PM To: Micha Silver <tsvi...@gmail.com>; Jurijs Kondratenko <yurikondrate...@inbox.lv>; qgis-user@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.mcdonn...@opw.ie Email Disclaimer: https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/ From: Qgis-user <qgis-user-boun...@lists.osgeo.org <mailto:qgis-user-boun...@lists.osgeo.org> > On Behalf Of Micha Silver Sent: 08 September 2021 14:04 To: Jurijs Kondratenko <yurikondrate...@inbox.lv <mailto:yurikondrate...@inbox.lv> >; qgis-user@lists.osgeo.org <mailto:qgis-user@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, Im 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@lists.osgeo.org <mailto:Qgis-user@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
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