All Questions
Tagged with layer-group or group-layer
136 questions
0
votes
1
answer
30
views
QGIS "Render Layers as a Group" Ignores Scale-Dependent Visibility
In QGIS 3.40, I've grouped several vector background mapping layers (OS Open Zoomstack data) for easier management. Individual layers (e.g., railway station points) are configured with scale-dependent ...
- 673
0
votes
1
answer
69
views
Copy layer group from one project to another with PyQGIS
Using QGIS 3.8, is there anyway to copy a layer group (and its subgroups) from project1.qgz to project2.qgz? I'm trying to write an script that adds a layer group (with several layers and group layers ...
- 81
2
votes
1
answer
150
views
Applying specific styling to group layers in the LayerList Widget in ArcGIS Maps SDK for JavaScript
Using ArcGIS Maps SDK for JavaScript 4.24, I would like to change the formatting of Group Layers within the LayerList Widget, such that the group layers can be immediately distinguished from non-group ...
- 21.2k
1
vote
1
answer
63
views
Layers corrupted after saving, closing and opening of QGIS project with PyQGIS
Using a Python script, I create a layer from a CSV file and then write it out to a gpkg file.
I then create a group in the layer tree, load it in the gpkg file and add it as a child of the group. This ...
- 51
1
vote
1
answer
254
views
How to programmatically access Trace network layer results when using NETWORK_LAYERS result type in a stand-alone Python script?
I have a stand-alone Python script that runs a Connected Trace on a Trace Network. This is a re-write of an existing script that runs a trace on a Geometric Network. The script will be published as ...
- 1,100
2
votes
1
answer
208
views
How to move a layer to a group using Python code in ArcGIS Pro?
I am trying to move a layer to a group using python code. Both the layer and the group are in the current/same map in ArcGIS Pro.
I have the following code (the layer to be moved to the group "...
- 45
5
votes
1
answer
212
views
Cloning the map layer using PyQGIS
I want to clone my generated memory layer and apply different filters and symbology. The clone is visible in the layer tree, but doesn't show up in the canvas. What am I doing wrong?
uri = f'point?crs=...
- 2,242
4
votes
1
answer
464
views
Move an existing layer into a group layer using ArcPy in ArcGIS Pro
I have a map object and I am trying to move an existing layer from that map object into a newly created group layer in the same map object.
aprx = arcpy.mp.ArcGISProject("Current")
mp = aprx....
- 311
1
vote
1
answer
248
views
Remove layers from a group and update LayerSwitcher with OpenLayers?
I have a layer group in OpenLayers that initializes empty. This group is added in a layer switcher
var group_search = new ol.layer.Group({
title: 'Search',
fold: 'open',
layers: []
});
map.addLayer(...
1
vote
1
answer
62
views
Combining two rasters at different resolutions with MapServer as a single WMS layer
I am trying "Join" two rasters with MapServer 7.6.4 so that they appear as a single layer on a WMS service, I have tried the wms_layer_group and GROUP but without luck. |
2 images one high ...
- 522
18
votes
2
answers
904
views
Showing the number of currently selected layers in QGIS
Although this should seem to be very straightforward, I cannot find out how to see the number of layers I have currently selected in QGIS. For example, in the example below I want to see somewhere in ...
- 792
0
votes
1
answer
279
views
ArcPy command to remove empty layers that are grouped
I have a script that works for MXD with ungrouped layers.
How can I change this so it works if there are groups of layers?
I have an MXD template with many layers & groups. The underlaying file ...
- 1
2
votes
1
answer
84
views
Viewing memory layers in group with PyQGIS
I'm writing a plugin for QGIS and given a layer (self.layer_comuni) from this I extrapolate an indeterminate number of layers depending on the correspondence of the values of the mercato_comuni list ...
- 61
5
votes
1
answer
257
views
Getting active group with PyQGIS
In PyQGIS we can obtain the active (currently selected) layer with
>>> iface.activeLayer()
<QgsRasterLayer: '007' (gdal)>
With a group selected this returns None (?).
QgsInterface does ...
- 14.9k
4
votes
2
answers
2k
views
Adding output layers of QGIS processing scripts to group using PyQGIS
I have a QGIS Python processing scripts that return multiple rasters. I want to return them to a group named 'Aligned'. There is nothing in the context.addLayerToLoadOnCompletion() function to specify ...
- 1,830
2
votes
1
answer
308
views
Enabling the "Render Layers as a Group" option in QGIS through python
I have written a simple python function that loads several existing shapefile layers into a new group in QGIS 3.28. I would like to extend this function to also automatically enable the "Render ...
- 673
1
vote
1
answer
1k
views
Why is GeoServer 'Layer Groups' not opening?
I want to create a layer group in GeoServer, but when I click on the layer group I get the error below. I am logged in as an admin, I'm not sure if this has to do with my setup?
An error occurred ...
8
votes
2
answers
2k
views
Sorting layers by name in one specific group of QGIS layer tree
I'd like to reorder the layers within ONE specific group of the TOC alphabetically by layer name, but without reordering the top level layers or the layers of other groups.
I found the following ...
- 507
3
votes
1
answer
351
views
Renaming group layer using ArcPy with ArcGIS Pro
How do I rename a group layer in ArcGIS Pro using ArcPy?
In ArcMap I can do so thus:
groupLayer = arcpy.mapping.Layer(r"Path to grouplayer.lyr")# empty group layer as template
groupLayer....
- 439
2
votes
1
answer
178
views
Creating event in PyQGIS that notices that group of layers is selected
I have these groups of layers with their layers inside in QGIS:
I have an event in PyQGIS that notices when I select a layer like RODAL or MONTE:
iface.layerTreeView().currentLayerChanged.connect(...
2
votes
0
answers
368
views
Creating layer in group-layer in QGIS Graphical Modeler
I want the layers created during a graphic modeler process be stored in a specific layer group. I tried a bunch of stuff, based on clone-move-delete, node_root, layertreelayer... Maybe in alg_params ...
- 29
10
votes
1
answer
3k
views
Selecting subgroup in Layers panel using PyQGIS
I can select a group layer (for example C) using the following script. But I can only select groups in root level (A or C). I am struggling to select subgroups. I play with the script, but no success.
...
- 78k
1
vote
1
answer
788
views
Mapbox GL JS Equivalent to Leaflet LayerGroup?
Does anybody know of an equivalent to the Leaflet L.layerGroup in Mapbox GL JS? I can do this in leaflet:
var layerGroup = L.layerGroup().addTo(map);
And then if I want to add, say, a marker to the ...
12
votes
4
answers
9k
views
Moving layers in the Layer Order Panel using PyQGIS
The following is a simple setup containing a group with three layers.
The code I use adds a new layer at the end of this group:
root = QgsProject.instance().layerTreeRoot()
group = root.findGroup('...
- 76.3k
1
vote
0
answers
182
views
Group by multiple columns in QGIS array
I'm looking to create a figure with multiple rule-based symbologies. A graduated range within a category within a main category.
The only way I think that's possible is by adding categories, ranges to ...
- 11
0
votes
1
answer
77
views
Get print composer to acknowledge the "Lock Layers" option when using the "Render Layers as a Group" option
I have shapefiles and rasters loaded into a QGIS workspace (3.30, but this issue doesn't seem to be version specific from my experience). I've grouped some of the vector layers and checked the "...
- 673
1
vote
0
answers
104
views
C# - Add GroupLayer to Active Map (ArcGIS Pro)
I'm trying to add a groupLayer to active map using C# and ArcGIS Pro. Devloping a plugin.
This is my sample code or what I've tried so far:
Esri.ArcGISRuntime.Mapping.Map myMap = new Esri....
- 11
2
votes
0
answers
347
views
Exporting layer tree in QGIS
I need to create a layer tree for other user researchers to use. In the final dataset there will be ~20 sub-groups, each with dozens of layers. (It's possible that this isn't the best way to do it -- ...
- 143
0
votes
0
answers
136
views
MapServer wms_layer_group, set title
We want to group wms layers in mapfiles and give the group a title that is different from the name.
Until now we did this with GROUP and wms_group_title, but GROUP is deprecated and we want to use &...
- 11
3
votes
1
answer
1k
views
Getting layer within a specific group using PyQGIS [closed]
I have two groups with unique names, which contain layers using identical names, e.g.:
Group 1
Layer A
Group 2
Layer A
Is there a smart way to set the active layer to specifically Layer A from e.g....
- 59
2
votes
2
answers
2k
views
Iterating over features within Group Layer that will be identified with Wildcard using ModelBuilder of ArcGIS Pro
In the ModelBuilder of ArcGIS Pro 2.8.1, using Iterate Layers, I want to iterate over features that are in a group layer. It seems like I should be able to identify this group layer by using a ...
- 450
0
votes
1
answer
650
views
Adding multiple feature classes (all within file geodatabase) to group layer using ArcPy with ArcGIS Pro
I am currently trying to add all the feature classes contained within a gdb to a group layer in ArcGIS Pro via a script. I have however not managed to add more than one single feature class at a time.
...
- 27
1
vote
2
answers
732
views
Layer to KML using ArcGIS Pro doesn't show all points [closed]
I'm using ArcGIS Pro, and I am trying to convert a group of layer (both points) to KML. When I make the KML and open it it doesn't show all the points!
- 11
0
votes
0
answers
40
views
GeoServer GroupLayer GetFeatureInfo returns wrong layer feature
I'm currently facing an issue with GeoServer and its GroupLayer functionality. I have created a GroupLayer named confini containing three layers: tutorial:Reg01012023_WGS84 (Regions), tutorial:...
8
votes
3
answers
8k
views
Adding layer to group in layers panel using PyQGIS? [duplicate]
I am trying to add a group to the layer panel, then place a vector layer (vectorLayer) into this group from a python script. The code I am using is:
groupName="test group"
root = QgsProject.instance()...
- 125
14
votes
3
answers
8k
views
Adding layer to group using PyQGIS
I am trying to add new layers into a specific group which I can get to work if I know the index, but how can I get Python to find the index of a group so it can load the new layer into the group ...
- 151
3
votes
1
answer
5k
views
.on("load") event for layer groups in Leaflet
I have used Leaflet's ImageOverlay to load various image layers onto a Leaflet map div (L.map). The size of the layer files can vary greatly. So some layers load very quickly while others can take a ...
- 93
10
votes
3
answers
4k
views
Removing all layers from group using PyQGIS
I want to remove all layers from a distinct group.
root = QgsProject.instance().layerTreeRoot()
the_group = root.findGroup("my_group")
parentGroup = the_group.parent()
I think I have to ...
- 4,474
2
votes
1
answer
1k
views
Identifying layers by grouping using ArcPy
I have a number of layers that I want to manipulate with ArcPy. On my ArcGIS Pro map I have them under a group layer.
To deal with them, I have been picking them by name as follows:
for theLayer in ...
- 265
7
votes
4
answers
17k
views
Dynamically add layer(s) to Layer Group
I have an Openlayers 3 app and users can retrieve stored routes from a web service and display them on a map. Currently each route is added to the top of the index but I'd like them to be inserted ...
- 1,065
2
votes
1
answer
355
views
Copy styles from many layers
I am working with QGIS 3.4
Is there a way to easily copy the styles from one group of layers to another group of layers with the same names? The outcome should be that layers that share the same name,...
- 21
0
votes
1
answer
63
views
Using ReplaceDataSource with group layers and ArcPy with ArcMap
I have a script to replace the data source on layer files in an mxd based on a geodatabase input from the user and a feature class with a matching name to the layer. This script works as intended as ...
- 13
2
votes
1
answer
2k
views
ArcPy Select (Highlight) All Features In a Specific Group Layer in Current Map [closed]
I am using ArcGIS 10.4.1.
Can you let me know how I can Select/Highlight (I am not going to run any attribute query against the layer and this is just for visualization) all features listed under one ...
- 1,498
-1
votes
1
answer
203
views
Making Grouped Layers in ModelBuilder using ArcMap
I started using ArcMap 10.4 just a few weeks ago, I've started to get a handle on the ModelBuilder however I can't seem to make the layers I export be automatically grouped.
So far this is the most ...
- 1
13
votes
2
answers
9k
views
Adding layer group using PyQGIS? [closed]
How can I create a new group in the layer manager using python code?
- 159
0
votes
0
answers
36
views
Group Created in QGIS Disappears When QGIS is Reopened
I have a situation where a newly created group layer (with various geometry types that are not scratch or temporary layers) disappears when re-opened. In some cases, it occurs right away, other times ...
2
votes
1
answer
516
views
Layer Group cannot be added into QGIS
I am having a problem with adding a layer group into QGIS, where upon making a connection to the server in QGIS, the layer group does not appear. I see only the layers that make up that layer group. ...
- 21
9
votes
1
answer
620
views
Programmatically select a GROUP node using PyQGIS
I have seen ways to programmatically select a current layer using QgsLayerTreeView().setCurrentLayer() but I cannot find a way to change the group selection. Does anyone have any tricks/hacks that I ...
- 91
2
votes
0
answers
115
views
QGIS Group Layer Variables
QGIS Group Layers don't have properties, probably because of that there also doesn't exist the possibility to define variables for Group layers. I use Project variables and Layer variables but also ...
- 1,000
5
votes
2
answers
1k
views
PyQGIS toggle group visibility (and recursively subsub...group visibility)
I would like to set visibility of a layer group and all of its children (and grand-children and so on...) using PyQGIS (QGIS 2.14.1).
Assume the groups name is g0 with subgroups g0[1...n] and subsub.....
- 14.9k