Selecting attributes from multiple vector layers in QGIS

Question

I'm looking for a way to select multiple attributes from about 9-13 vector layers. I downloaded the "Multiple layer selection" plugin, but I get an error.

2022年03月22日T14:01:20 WARNING Traceback (most recent call last):
 File "C:\Users/Gebruiker/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\MultipleLayerSelection\MultiLayerRectangleSelection.py", line 43, in canvasReleaseEvent
 layer.selectByRect(lRect, False)
 TypeError: QgsVectorLayer.selectByRect(): argument 2 has unexpected type 'bool'

enter image description here

Does someone understand why it isn't working?

• Erik: Did you check with the plugin provider?
• Taras: Which QGIS version is it? Do you need to select by location or by attribute within all those 9-13 vector layers?
• Yelper: I have qgis 3.22.4. I want to get an overview of the attributes that are within the square that I draw.
• Taras: Can you try to reinstall the plugin?
• Bera: What do you mean by overview?

Answer 1

Create a new polygon layer. Draw a polygon that covers the area from where you want to get the attributes. Use the following expression without any adaption to get all attributes from all features of all layers within this polygon:

array_to_string (
 array_foreach (
 @layers,
 with_variable (
 'currentlayer',
 layer_property(@element, 'name'),
 array_to_string(
 array_foreach (
 generate_series(
 0, 
 array_length(
 overlay_intersects(
 @currentlayer,
 $id
 )
 )-1
 ),
 map_to_hstore( 
 attributes(
 get_feature_by_id( 
 @currentlayer,
 overlay_intersects(
 @currentlayer,
 $id
 )[@element]
 )
 )
 )
 )
 )
 )
 )
)

Screenshot: the label in the red box is created based on the expression above. It contains all key:value pairs (attribute name/attribute value) of all features that intersect the polygon outlined in red, taking into consideration all layers:

enter image description here

Answer 2

In the end the Multilayer Select tool worked after a reboot and placing my final files in a new Qgis project.

However, to get the result I wanted I simply had to use the Identify Features Tool. I did not realise you could do more than click on a seperate feature, but instead make a selection by drawing a box. This gives me the "overview" that I wanted.

enter image description here