If you're willing to consider a GRASS GIS
solution, then the module v.to.db can upload azimuths of line
segments (as well as lots of other measures) to the attribute
table.
https://grass.osgeo.org/grass78/manuals/v.to.db.html
Dear all,
I have a SHP of river drainage which also includes a morphotectonic value
for neighbour and continuos river segments.
I need to assign a direction (0-360°) to each one. I mean, I need a list
with the azimuth of each segment and its associated morphotectonic value to
generate a rose of di
HI Scot, if you have a qgis window open, and open your finder window, you
should be able to drag data sources directly from your downloads folder
into qgis. You may need to unzip some of the data sources first.
Maybe someone who is more familiar with QGIS on a mac or the tutorial can
chime in with
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
Sent: Wednesday, September 8, 2021 5:17 PM
To: C Hamilton
Cc: Jurijs Kondratenko ; qgis-user
Subject: Re: [Qgis-user]
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 McDon
Thanks Calvin,
In the QGIS version I’m using, there is Nearest Neighbour algorithm. Natural
Neighbour is smth else, and it seems the easiest way to have it for me is
WhiteBox Tools plugin.
Best wishes,
Jurijs
From: C Hamilton
Sent: Wednesday, September 8, 2021 5:00 PM
To: Jurijs Kondra
All - beginner user here following the QGIS instructions to load Alaska data
set into QGIS.
Installed QGIS 3.20.2-Odense
Running MacOS 10.15.3
- downloaded the Alaska data set as linked in the instructions.
- opened QGIS and opened the Data Source Manager browser window.
There is no QGIS data fo
Hi,
Is your directional linear network (road, rivers...) driving you crazy?
I have just uploaded 3 interdependent models will check for invalid
geometries, identify common network errors (disconnected edges,
multipart geometries, overlapping geometries, parallel edges, self
connecting lines,
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 wrote:
> In addi
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
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 comma
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
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
Alternative
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