All Questions
20 questions
1
vote
0
answers
238
views
GeomorphicFloodArea Plugin is not working
I'm trying to get the plugin GeomorphicFloodArea to work but cannot.
I tried using QGIS 3.10 but got an error message, so I downloaded version 2.18.28 and it still will not work. I get an error ...
- 11
4
votes
1
answer
149
views
Differences in the Select by expression between QGIS 2.18 and 3.4
I want to select in a population table the growth rate between two years greather than 1.5.
In QGIS 2.18 the following expression works fine
"POP_P2014" / "POP_P2000" > 1.5
With the same data ...
- 175
1
vote
1
answer
2k
views
QGIS SAGA "Kriging" tools doesn't work
I try out different methods of point interpolation for a digital terrain model. For this purpose I tried to run the "ordinary kriging tool" from the SAGA Tools with QGIS 2.18 and QGIS 3.2.
When I run ...
- 399
5
votes
1
answer
498
views
Where did checkbox option in Points to Path tool go?
I made considerable use of the "Points to Paths" tool. I forgot which QGIS version I was using, but it was most likely 2.x, probably 2.14.
According to my memory and notes the tool had a ...
- 8,356
2
votes
1
answer
1k
views
Calculating volume of buildings using QGIS?
I am working with QGIS 2 or 3
I have DSM and DTM already so I can calculate DSM - DTM:
Plus, I have shapefile with buildings' footprints.
How to calculate volume of every single building using DSM-...
- 367
2
votes
0
answers
150
views
Migrate QGIS2 projects to QGIS3
I have about 40 QGIS2 projects. If I open them with QGIS3 labels and svg icons are not displayed. I don't know if there is any other feature that is not working when upgrading to QGIS3, but I suppose ...
- 3,768
2
votes
1
answer
421
views
Creating an Action in QGIS with multiple Expression?
I want to create an action in QGIS with multiple Expression. But unable to do so. I want to open images from two different directories with one action. Is it possible? How can I do so?
e.g.
Type : ...
- 21
8
votes
3
answers
1k
views
What happened to QGIS 2.x LTR?
I've been using QGIS 2.x LTR version for quite some time now (mostly for Lizmap webclient because 3.x didn't perform as well), but today as I wanted to install QGIS on another PC, I realized I couldn'...
- 799
1
vote
1
answer
2k
views
UBUNTU 16.04, QGIS 3.4 above Installation problem
I want to install QGIS 3.4 above and did exactly the same as this page:
QGIS Installers
and tried the codes below having no error at all:
(1) add the following lines to /etc/apt/sources.list
deb ...
7
votes
1
answer
4k
views
Add PostGIS layer to QGIS via Python Console
How can I add a PostGIS layer to QGIS via the Python Console?
With some server setups, especially with a large number of tables, it can be very slow to load the list of layers via the Browser or Data ...
- 872
2
votes
1
answer
287
views
Reason for better save capability of QGIS 3
I have an internal processes meeting with work where I am trying to describe the benefits to migrating to QGIS 3 from QGIS 2.
I need to explain the technicalities of how the save option works better ...
- 3,282
0
votes
1
answer
229
views
Will I lose project functionality on upgrading QGIS?
This might be a stupid question but if I update to QGIS 3.2.1 will I have problems working on projects created in my current 2.18.20?
- 131
4
votes
0
answers
2k
views
Install QGIS 3 and QGIS 2.0 Ubuntu 18.04 [duplicate]
I have successfully installed QGIS-3 on my ubuntu 18.04. I want to install QGIS-2 as well along with QGSI-3. How can i install QGIS-2.18 as well. So that QGIS 2 and QGIS 3 both would be running on my ...
- 2,281
0
votes
1
answer
231
views
QGIS hyperlink to server location- working in 3.0 but not 2.18.20?
This is not necessarily a pressing issue, as there is a workaround, but it has piqued my curiosity about how QGIS manages hyperlinks through its 'Action' functionality. Please feel free to correct my ...
- 342
5
votes
1
answer
2k
views
Custom format for a grid with degrees, minutes, seconds with suffix using letter from another language
I am designing a map in French where West is "Ouest", and thus the map should read 45°23′67′′O instead of 45°23′67′′W. I am using a version of QGIS in English (update: in the French version of QGIS, ...
- 2,027
6
votes
1
answer
626
views
How to use optional inputs in model processor for QGIS 2.18/3.0?
I have developed a processing model in QGIS 2.18 where all my inputs are optional and I need them to be truly optional. However, the model will not run unless I have all inputs present.
I have tried ...
- 495
4
votes
1
answer
155
views
Why $area gave me a wrong value QGIS 2.99?
I want to calculate the area with $area function in QGIS 2.99 but the operation gave me a wrong value.
Here is a picture comparing the results between QGIS 2.99 and QGIS 2.18. The right side is QGIS ...
- 405
3
votes
2
answers
3k
views
Joining attributes by location for more than one located feature using QGIS
In the standard join attributes by locationfeature in QGIS 2.0/2.18, there are two options:
Take attributes first located feature
Take summary of intersecting features
Is there a function in QGIS ...
- 2,027
3
votes
0
answers
65
views
Importing a building into QGIS? [duplicate]
Given an SVG drawing of a building, and 2 GPS-reference points, as well as where north is in the drawing, how can I import a building into QGIS so the 2 GPS-reference-points are at the same ...
- 31
18
votes
2
answers
10k
views
Save and load user profiles in QGIS
Is there a way use a configuration file, maybe .ini to load in the relevant settings for QGIS when it is setup, maybe to share with various people?
Plugins installed and plugin repositories filled in
...
- 611