Hi,
If it's only date metadata you are interested in, you could write a script to extract that info from the metadata and display it in the raster layer name?
Or, simply, rename the raster layer to include the date?
An other possibility is to create a "legend widget" with the info
you want to display.
Cheers,
Benoit
On 06/05/2020 15:54, Nicolas Cadieux
wrote:
I ment as expressions, not variables.
https://docs.qgis.org/latest/en/docs/docs/user_manual/working_with_vector/_expression_.html
Nicolas CadieuxÇa va bien aller!
Le 6 mai 2020 à 09:47, Nicolas Cadieux <[email protected]> a écrit :
Hi,
A raster database has not been developed yet in QGIS, unless it was recently add and don’t know about it. I did not know it could stored in the metadata. I know some metadata (Like layer name, file name) can queried as variables. Could this be used in a python script? Anyone???
Ultimately, you could do a raster to vector conversion and add the data in a new database. You could make that layer transparent but still access the dataset.
Nicolas Cadieux
Ça va bien aller!
Le 6 mai 2020 à 00:03, Patrick Dunford <[email protected]> a écrit :
Good day
As we know, for vector layers, we can caption the layers with any field that is stored in the data table that is incorporated into each layer.
With a raster layer, there obviously isn't an equivalent data structure attached within the raster file itself, but within the properties assigned to each raster layer that is incorporated into a Qgis project are metadata fields that can be filled in and presumably this data is stored within the project file for the layer concerned.
Given that there is this data stored then I think there is a question that it should be possible to display any of the fields as a caption when the raster layer is visible on the canvas and unfortunately I cannot find any way of doing this. As I currently use various raster layers in my projects that are from various dates I would prefer to have some way of displaying the date associated with each layer within the canvas and this does not appear to be possible at present with the software.
_______________________________________________
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
