What have you tried so far?
-Original Message-
From: Qgis-user On Behalf Of Grant Boxer
Sent: Friday, 26 June 2020 12:20 PM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Selecting maximum values in drill holes
I am trying to find out the best way to select the highest values in a
Hi QGISers,
I'm doing some work with some modelling using python that generates large
numbers of mesh surfaces. I'd like to be able to perform comparisons and
run calculations on the meshes. Does anyone know about modules that are
optimised and make this relatively simple. I'm visualising my
Hi Grant,
how are you selecting and how is your data stored?
If the drill hole values are in some sort of sql database then you could
ORDER BY "value" descending then SELECT DISTINCT drillhole to get a unique
value for each drillhole.
My SQL is rusty and this is pretty vague.
Matt
On Fri, Jun
Hi Matt,
What format is your mesh saved in? QGIS supports ESRI TIN format (
https://github.com/lutraconsulting/MDAL/issues/162) and some other HDF
based mesh data (https://github.com/lutraconsulting/MDAL#supported-formats).
If your data is supported by MDAL, you can then load them directly in
I am trying to find out the best way to select the highest values in a
set of drill holes as well as the bottom of hole values. The files
contain drill hole id, depth from, depth to and assay values. If have
tried the maximum function but I don't think I have the syntax correct.
Anyone have
How about the following as a virtual layer
Select max(depth to) from YOURLAYER - deepest 'depth to' for all drill holes
Or
Select drill hole id, max(depth to ) from YOURLAYER group by drill hole id -
deepest depth per hole id?
-Original Message-
From: Qgis-user On Behalf Of Grant
Why do the standard CRS parameters in QGIS change from version to version
and do not correspond to EPSG? For example:
QGIS EPSG:28412 Pulkovo 1942 / Gauss-Kruger zone 12
+proj=tmerc +lat_0=0 +lon_0=69 +k=1 +x_0=1250 +y_0=0 +ellps=krass
+towgs84=25,-141,-78.5,0,0.35,0.736,0 +units=m +no_defs
salve,
ho un problema.
ho caricato un DTM (tutta l'italia ritagliata) sul QGIS 3.14, utilizzando
gli strumenti di analisi per i raster ho calcolato la pendenza che mi da
valori 0 - 85.3903 (non clicco su esprimi in gradi, ma faccio partire lo
strumento di analisi con le impostazioni di base).
ho
Hi everybody! How can I make a bulk transfer of the user defined
projections to another machine? I know about qgis.db but is there a simple
method?
--
С уважением,
*Лебедев Иван Вениаминович*
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Ciao,
le pendenze che hai calcolato sono in gradi. QGIS ha introdotto qualche
versione fa il riclassifica con tabella (menu processing) e quindi non hai
bisogno di passare per grass. Unica accortezza come tipo di dati in uscita
scegli un Int (integer).
La metodologia puoi applicarla ovunque.
Usa il calcolo delle inclinazione di saga in processing e scegli % anziché °
Il gio 25 giu 2020, 09:40 Antonella ha scritto:
> salve,
> ho un problema.
> ho caricato un DTM (tutta l'italia ritagliata) sul QGIS 3.14, utilizzando
> gli strumenti di analisi per i raster ho calcolato la pendenza
Hi Jukka,
Unfortunately, there seems to be an issue with the conversion. I have tried
it with https://github.com/wonder-sk/mapbox2qgis which is the basis for the
Maptiler plugin and our first attempt while adding the native support for
vector tile.
To solve your issue and in general a better way
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