I am using QGis Graphical Modeler v.3 It is possible to define, as an Input, a Matrix, defined as follows: "A table (matrix) parameter for processing algorithms".
I want to use values stored within a Matrix in the Field Calculator, but I do not know how to call for them.
When I open the Field Calculator, I see the reference to other parameters (e.g. Vector Layer, as in the image) but nothing related to the Matrix.
Which is the syntax to call for Matrix values e.g. Matrix (i j)?
Same issue with Enum Parameter (Input).
I searched everywhere but the only related discussion I have found appears to me as related to the GUI: https://github.com/qgis/QGIS/pull/6936