All Questions
83
questions
0
votes
0
answers
19
views
QGIS crash everytime post not saving new layer
I edited one layer but closed project without saving it. Now my project is opening but it crashes within 2 - 3 minutes' of opening. What all I can do to save my work?
1
vote
1
answer
138
views
QGIS export layer relations from one project to another
I have a .qgz project with a spatial layer and two non-spatial layers, primarily created for data collection. All the three layers are saved in a single .gpkg file and the non-spatial layers are ...
- 163
0
votes
1
answer
263
views
Why is the "Label Properties" window greyed out for editing in QGIS?
I'm running Win10 (32GB RAM, i5-7500) and QGIS 3.28.2-Firenze.
I have a project I was given to write a report on. In QGIS there are text labels not associated with layers (but describing them I ...
1
vote
1
answer
48
views
Where to find the comment of column in QGIS?
I created a column with a comment but where do I find this comment later on?
- 59
0
votes
0
answers
27
views
Can I plot the individual style symbols/lines from a single layer to a PDF, and have the PDF have those different styles as different layers
I am working with a single layer. I assign the different features different attributes. Then I use categorized styling according to those attributes. In the layer window, these are easy to toggle on ...
2
votes
1
answer
332
views
Setting different symbols for a CSV layer with attribute "Type"
I have a CSV file with columns:
Name
Latitude
Longitude
Type (values: Hotel, View)
I have this displaying correctly with Name displayed by each point. I would like to have different symbols ...
- 431
1
vote
0
answers
212
views
QGIS expression function is_layer_visible() missing in QGIS 3.28
Trying to answer another question, I remarked that the QGIS expression function is_layer_visible() is missing in my expression editor. It should normally be located in the General group. It's not ...
- 73.1k
3
votes
1
answer
262
views
Counting and summing selected number of features in map layer using PyQGIS
I have a map layer and I want to find out how many of one type of feature there are, and sum an associated feature. I want to do this as a plugin script as there will be a number of other operations ...
- 455
2
votes
1
answer
93
views
Undo move layer in QGIS 3
My map projects often incorporate many different layers in many different groups and subgroups.
I keep copies of layers in groups specifically ordered and symbolized for a particular map layout.
...
- 109
4
votes
0
answers
700
views
Deleting layer with its source in QGIS 3
When I remove a layer, I usually don't need the source anymore either. If now using the QGIS remove layer... command, the layer, of course, is gone, but the source file remains in the data and has to ...
- 507
2
votes
1
answer
252
views
Adding an entry in contextmenu of QGIS Legend Layer Tree
Like this answer there was in QGIS 2 the possibility to extend the contextmenu of a layer from Python code.
Now I'm searching for this feature in QGIS 3. I'm looking for this in QgsLayerTreeNode class ...
- 1,181
2
votes
0
answers
260
views
"Snapped geometry has invalid geometry" error when snapping geometries to layer
I have two shape layers in QGIS where I want to use the "Snap Geometries to Layer". I get the error message that several polygons of the Reference layer have invalid geometries:
Feature (1) ...
- 641
1
vote
0
answers
117
views
Very slow QGIS at own environment level
I have had a problem for a long time that I cannot solve. It is about the slowness to operate with any command in QGIS. I'm not talking about very heavy projects, but about the QGIS environment itself....
- 131
0
votes
0
answers
30
views
Setting layer visibility in standalone QGIS Python script [duplicate]
I've been writing a standalone Python script that calls QGIS 3 libraries to draw stuff in a QWidget. I'm trying to change the visibility of layers based on a callback, but it doesn't seem to work.
...
- 1
4
votes
1
answer
801
views
Adding a point to an existing layer
How can I create a point from two coordinates with the QGIS Modeling tool and add it to an existing layer?
- 71