Hi Doug,
you can create photogrammetric export models (e.g. DEM, point cloud)
with the open source software OpenDroneMap. Try WebODM [1] with the
graphical user interface - you can install it with docker. The DEM is
perfect for QGIS, you can create a 3D view of your Street with the 3d
map vie
Hola compañer@s,
estoy buscando algún plugin en QGIS o complemento de POSTGIS, que hagas las
funciones de asistente en la construcción de consultas SQL.
Una herramienta que ayude a los dummies en SQL.
He encontrado PostGIS Query Builder, en principio perfecto, pero por lo que
puedo ver, con muy
Hi Doug,
This makes it a lot easier, the others mentioned good possibilities to find the
cracks.
Concerning your question of segmentation of the roadbed:
You could create a regular grid and count, measure or what else the cracks
within the grid cells/polygons. A comparison based on this grid w
Hi
I'm trying to create a rule based symbology with
"id_alpperimeter" IN (aggregate( layer:='alpperimeter20190607152251688',
aggregate:='concatenate', expression:= "pk" , filter:=selected = '1',
concatenator:=concat( char(39), char(44), char(39
But there are no results in there.
The rule
Hi Jurg,
you need to make an array first, your statement should be:
"id_alpperimeter" IN string_to_array((aggregate(
layer:='alpperimeter20190607152251688', aggregate:='concatenate',
expression:= "pk" , filter:=selected = '1', concatenator:=concat(
char(39), char(44), char(39)
Mit freun
Hi Nicolas,
Vector densification worked. I went with the default 1 vertices to add and it
created a new layer that now displays at any zoom level. Can you explain why
my original layer doesn’t display?
Thanks,
Lee
> On Dec 14, 2019, at 3:13 PM, Nicolas Cadieux
> wrote:
>
> Hi,
>
> Try m
Hi Stefan
The IN operator didn't like arrays. But i've found the solution.
array_contains( string_to_array( aggregate(
layer:='alpperimeter20190607152251688', aggregate:='concatenate', expression:=
pk , filter:=selected = '1', concatenator:=char(44))), attribute(
$currentfeature , 'id_alpperi
Hi,
If you have a very long straight line represented by only two point,
reprojection operates only on those two points (called vertices or nodes). The
lines just represent a straight connections between two point. The problem is
that the earth is round (contrary to some popular belief :) and
Translation,
He is looking for a SQL GUI query builder plugin for POSTGIS. Do you know a
plugin?
Nicolas
> Le 16 déc. 2019 à 05:09, Alejandro Chamizo de Castro a
> écrit :
>
>
> Hola compañer@s,
>
>
> estoy buscando algún plugin en QGIS o complemento de POSTGIS, que hagas las
> funciones
Hi,
I agree Falk that DEMs made from contour lines have their problems
(stepped slopes, flat areas, elevation drops in lakes...). Depending on
the input data, they can still be a very accurate model for elevation.
I tested the SRTM, NASADEMs, Alos, ASTER and the CDED (Canadian Digital
Eleva
Hi there,
thanks,
just to elaborate, for those who are interested:
(I would like to see the study that has compared those DEM products;
it matters a lot for climate models, for instance; happy to read the
citations).
Getting precise DEMs remains a massive struggle, regardless of what people,
gov
Hi Dave,
When "Use Z-coordinate for interpolation" is checked, it must be
assumed that the Z coordinate will be used *instead* of the
value in the "Elevation" attribute.
But it is strange that this should cause the Exception / error
you experience.
The TIN Interpolator seems to works fine here (
Hi
On 2019-12-16 5:36 p.m., Falk Huettmann wrote:
Hi there,
thanks,
just to elaborate, for those who are interested:
(I would like to see the study that has compared those DEM products;
it matters a lot for climate models, for instance; happy to read the
citations).
You will find many on web
Hi Jorge
Here is an extract form one of the source xls files. Embedded in here is a
reference to a svg symbol, in this case "geology/arrows_sinistral.svg". I
have located this file along with other associated svg files but where is
QGIS expecting to see these files. What is the root directory for
I’m not sure that’s the reason as I have plenty of points in my lines. Also, I
saved the densified layer to disk, but the saved layer has the same display
problem as the original layer.
Lee
> On Dec 16, 2019, at 8:35 AM, Nicolas Cadieux
> wrote:
>
> Hi,
>
> If you have a very long straigh
Hi,
When you cross 360 degrees, some projections have difficulty dealing with that.
Try not crossing that or try splitting the shapes that cross it.
Nicolas
> Le 16 déc. 2019 à 22:32, Lee Eddington a écrit :
>
> I’m not sure that’s the reason as I have plenty of points in my lines.
> Also,
On Sun, 15 Dec 2019 at 07:38, Lee Eddington wrote:
>
> I have a vector layer of lines that span -360 to 360 deg. They display fine
> when I’m zoomed out full, but if I zoom in to any degree they disappear.
>
> I’m using 3.4.14 on a Mac.
It's likely a corrupt spatial index on the file. Try remov
Hi Dave,
You would create a folder anywhere in your file system (preferably not
on a slow partition), copy the necessary SVG files in there and then
create a configuration in "Settings" --> "Options" --> "SVG paths" -->
"add a new entry (green plus)" with a path to the folder you created in
the
Hi,
It is my first message on mailing list, so I am sorry if I am writing
something wrong. I am looking for some solution, but without any result.
I downloaded climatological data from the CORDEX framework (using
Copernicus services). The data is in rotated pole coordinate system. I
found on GIS
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