Jesahel, This may be something you already do and I don't know if this would save you any time but I often set up project variables in situations where I am using a layer across many expressions or layouts. Project>Properties>Variables For example when I am referencing a DEM in expression over and over I create a variable DEM and set to to the layer ID e.g. 'DEM_d44338fa_1bf5_4ea6_b58e_7489ea8b28a8' and then in my expression reference @DEM in my expressions. While it is still a little annoying to have to change the variable when I change the DEM I only have to change it in one place. -Bas
On Thu, Aug 19, 2021 at 2:23 PM Charles Dixon-Paver <[email protected]> wrote: > I would imagine there are just far too many projects and use cases where > the same layer name is used for multiple layers. Saving and loading themes > etc is a feature request I imagine. Copying styles between layers is > supported (and you can save style and layer definitions). I imagine most > issues can be resolved by just using an expression based id wherever > possible, with something like this: > > QgsProject.instance().mapLayersByName('World Map')[0].id() > > On Thu, 19 Aug 2021 at 17:15, Jésahel Benoist <[email protected]> wrote: > >> Hello all, >> >> QGIS is now my favorite everyday tool. Anyway, there's something that is >> a real pain in the ass, the choice to use layer ID instead of layer name in >> layouts/reports/atlas/themes. >> >> First, let me explain that I have a lot of layers so I'm using groups, I >> import/export needed groups with layers definition files and I'm often >> using the name to track the versions between projects. >> >> At this stage, one bad thing is that deleting a layer and reloading is >> changing its ID and so... All layouts/reports/atlas need to be corrected. >> So I'm not deleting anymore groups/layers but instead have more dedicated >> projects, and I have created some scripts and plugins to alter existing >> layers, and loads/saves styles in DB. Fine but not easy for everybody and >> needs to correct more projects when needed. >> >> Today I discovered that themes are also based on layers ID... But there >> isn't any way to load/save themes configuration. How to know what was the >> theme configuration before a change ? Only by peeking around in the project >> file or some python. But even with a save/load feature, when a modification >> occurs, all projects need to be corrected. >> >> Well, as you can see, for some years that I've been working with QGIS, >> its use of the layer ID instead of layer name is clearly the most annoying >> thing in this great software. I think that is also a reason for some >> features not to be created. >> >> I imagine that this is low level and needs a lot of modifications so I'm >> not asking for a change now. But could a discussion about this be initiated >> ? >> >> Best regards to all, >> >> Jésahel >> >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
_______________________________________________ Qgis-user mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
