Bug report #14677
Differences in duplicating a layer using ctrl+D&D and "duplicate layer"
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Map Legend | ||
| Affected QGIS version: | 2.18.10 | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | end of life |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 22641 |
Description
I noticed in QGIS 2.14 I can hold Ctrl key and drag to duplicate a layer. But this seems to create a copy linked from source layer. Unlike if I use "Duplicate" in context menu this procedure reflects any modification (or rename) on both layers.
Does anyone know more about this feature? Or some way to identify a duplicated or linked layer.
History
#1
Updated by Giovanni Manghi over 8 years ago
- Category set to Map Legend
- Target version deleted (
Version 2.14) - Operating System deleted (
Windows) - OS version deleted (
10) - Affected QGIS version changed from 2.14.1 to master
- Status changed from Open to Feedback
Both ways just duplicate the layer in the layer list, as the datasource is the same. Unless I'm missing something I would say that eventually duplicating with ctrl just misses to add the "copy" to the duplicate layer name.
#2
Updated by Fausto Bugatti Isolan over 8 years ago
Thanks Giovanni!
Let me try to explain.
When I use Ctrl key a duplicate layer is created without "copy" addition in layer name. Then (p. ex.) if I change symbology or even layer name in this duplicated layer it reflects in the source layer this same changes. This does no happen when I do it in a layer created using "Duplicate" in the context menu.
I don't know if this is a bug in QGIS or something that I don't understand the purpose/difference.
The use of Ctrl key is a nice improve in this version but I think it has some issues to be solved.
Giovanni Manghi wrote:
Both ways just duplicate the layer in the layer list, as the datasource is the same. Unless I'm missing something I would say that eventually duplicating with ctrl just misses to add the "copy" to the duplicate layer name.
#3
Updated by Giovanni Manghi over 8 years ago
- Priority changed from Normal to Low
- Subject changed from Duplicate layer using Control button on keyboard to Differences in duplicating a layer using ctrl+D&D and "duplicate layer"
- Status changed from Feedback to Open
I see the differences, not sure is by design or not. Not even sure how much harm this can do (little in my opinion).
#4
Updated by Giovanni Manghi over 7 years ago
- Regression? set to No
- Easy fix? set to No
#5
Updated by Corey Burger over 7 years ago
This is a fairly major issue - as you can easily wipe out work with this. It is also a Regression from prior releases
#6
Updated by Giovanni Manghi over 7 years ago
- Description updated (diff)
- Priority changed from Low to Normal
- Affected QGIS version changed from master to 2.18.10
Corey Burger wrote:
This is a fairly major issue - as you can easily wipe out work with this.
asking genuinely, how?
It is also a Regression from prior releases
there was no "duplicate layer" feature in the past, so not exactly a regression. If this is what you mean.
#7
Updated by Corey Burger over 7 years ago
Easy to wipe out work:
1. Create a layer and all its styles
2. Copy with the Ctrl+Drag option
3. Start styling that layer and save your changes
4. Notice you have wiped out your styling in the first layer
I love the idea of linking layers, but it needs to be done explicitly (with the new key command) and it must be shown to the user visually some how
#8
Updated by Corey Burger over 7 years ago
I would also note that I would be hardpressed to find an application where duplication links styles by default. Inkscape & Illustrator certainly don't do it, nor does ArcGIS.
#9
Updated by Rodrigo Izurieta almost 7 years ago
Corey Burger wrote:
This is a fairly major issue - as you can easily wipe out work with this. It is also a Regression from prior releases
Well, this is exactly what happened to me. I find this "feature" of duplicating layers absurd. Why in the world would I duplicate a layer if all changes to the duplicated layer will be saved on the original. I'd simply work on the original!
This is definitely a bug.
#10
Updated by Giovanni Manghi over 5 years ago
- Status changed from Open to Closed
- Resolution set to end of life
End of life notice: QGIS 2.18 LTR
Source:
http://blog.qgis.org/2019/03/09/end-of-life-notice-qgis-2-18-ltr/
QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle.
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