[Qgis-user] Embed layers and groups

Fri Mar 10 09:31:16 PST 2017

Hi guys,
Paul Blottiere submitted a pull request to solve that issue here
https://github.com/qgis/QGIS/pull/4247

If it is doing the work and merged, that would deserve backporting to 2.18
branch.

And yes that issue deserves to be more advertised and also extended to a
unlinked "copy" mode.
Wiring it in browser would be a nice way to make it more known too.

Side note: There is already a plugin called layers menu from project to
build menu shortcuts to other's project layers. I can't live without it
now, pushing that into core would be nice, if someone's willing to fund
that, qgis devs would probably be happy to tackle that

Le 10 mars 2017 3:19 PM, "Neumann, Andreas" <a.neumann at carto.net> a écrit :

> Hi Harrissou,
>
> Thanks for tackling this in the documentation.
>
> Some remarks:
>
> - embedded layers are shown with "italic" labels in the layer tree to
> distinguish them from regular layers.
>
> - all layer properties are "read only", not only styling and labeling, but
> also any other properties, like field aliases, display values, actions,
> etc. That's why the layer properties can't be shown to avoid that the user
> changes stuff which can't be saved in the project.
>
> - if the master project uses an alternative rendering order (defined in
> the layer order panel of the master project), the layer ordering in the
> project where the layers are embedded can only be retained "en bloc" and
> only if you embed the parent group and not individual layers
>
> It may even be that you'll have to also activate the alternative rendering
> order in the client project if you want to retain, but I am not 100% sure.
> I just remember that it gave me headaches with the layer rendering order in
> the past, because it was a bit buggy. Should work well meanwhile though.
>
> Andreas
>
> On 2017-03-10 12:05, DelazJ wrote:
>
> Hi,
>
> Actually it's not a new feature. Has been there since.... (available in
> 1.8 documentation http://docs.qgis.org/1.8/en/
> docs/user_manual/introduction/general_tools.html#nesting-projects)
> And as you can see, the documentation has neither been improved since.
> Given your discussion I tried to put some highlights on the feature and
> any review is welcome https://github.com/qgis/QGIS-
> Documentation/issues/1748 I'm more a default style user than an embedded
> layer one so if I miss some advantages in this feature please, let me know.
>
> Laurence, I didn't check if you had reported the issues yet, otherwise I
> think removal of some items can be added:
> - Layer menu --> Labeling
> - when right-clicking an embedded layer --> Style.
>
> Given that the Layer Properties dialog is not availbale, there are some
> actions like "Set Scale visibility of layer", "Set layer CRS", "Filter"
> (that belong to the Properties --> General menu) that make me fail to
> understand the real scope of an embedded layer. Are they supposed to be
> grayed too or not? What kind of changes are really allowed on such a layer
> or what is really kept from the "source" file?
>
> Thanks,
> Harrissou
>
>
> 2017-03-09 21:07 GMT+01:00 Laurence Béchet <bechet.laurence at gmail.com>:
>
>> Thanks Andrea. I'll create them.
>> These are not big issues and easy to work around as a user.
>>
>> I agree with you this new embedded layers feature is awesome and for
>> little mapping projects like Ark in the Park they are very useful as I have
>> my layout already ready and just need to add what i want to plots: bird
>> territories or past control results or ..... Also if something in the
>> layout changes (new track, pest control grid altered) I only need to modify
>> the 'master' map and it is propagated to all the other maps. Worth a try!
>>
>> Kind regards
>> Laurence
>> ARK IN THE PARK Volunteer Co-Ordinator
>> Cascades Ranger Station
>> Falls Road, Waitakere
>> Phone:  (09) 810 7014
>> www.arkinthepark.org.nz  www.forestandbird.org.nz
>>
>> On 9/03/2017 10:58 p.m., Neumann, Andreas wrote:
>>
>> Hi Laurence,
>>
>> I can confirm both issues.
>>
>> Embedded groups show empty (without the layers, only the groups are
>> displayed) in QGIS 3 and they are stylable in the styling dock in 2.18 when
>> they shouldn't be stylable.
>>
>> However, if your restyle embedded layers in the styling dock, they are,
>> of course not saved back to the original layers. This would be dangerous
>> and probably unwanted in most cases.
>>
>> The styling dock is fairly new and probably the devs where not aware
>> about the embedded layers feature.
>>
>> Can you please issue bug reports for both issues?
>>
>> Embedded layers and groups are probably not used that much in the wild,
>> but I find them incredibly useful. It is one of my favourite QGIS feature
>> and saves you tons of work if you can re-use background layers from other
>> projects, while still being able to identify these layers or snap to them.
>>
>> Unfortunately, many users and devs are not aware of this feature and it
>> doesn't get much attention.
>>
>> Thanks,
>>
>> Andreas
>>
>> On 2017-03-08 22:10, Laurence Béchet wrote:
>>
>> Hi,
>>
>> I'm trying to use the embed layers and groups feature.
>> I'm running on Windows8 pro 64bits.
>> I have created a new project and I am loading a group of layers which are
>> my background (streams, lakes, etc ..) in a main project.
>>
>> QGIS 2.18.4 QGIS code revision 59c1d21:
>> I get the group loaded nicely. As expected, I cannot access the
>> properties if I double click on the layer. However, if I have the layer
>> styling panel open, I can change the style ... I have not checked what
>> happens to the main project.  Question 1: Is this normal?
>>
>> QGIS version 2.99.0-Master QGIS code revision 5a543e4:
>> The group appears in the layers panel but none of the layers are
>> displayed. Question 2: Is this normal?
>>
>> Kind regards
>> Laurence Bechet
>>
>> ARK IN THE PARK Volunteer Co-Ordinator
>> Cascades Ranger Station
>> Falls Road, Waitakere
>> Phone:  (09) 810 7014
>> www.arkinthepark.org.nz  www.forestandbird.org.nz
>>
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