Hi,
In our experiment we have 3-4 continuous controllable factors and the fill height of a reservoir that is gradually reduced with each run as uncontrollable factor .
It is not an option to adjust the fill height for each run.
The reservoir can not be filled to less than 100% at the start of the experiment.
If blocking is used the fill height of the reservoir will decrease within each block.
The reservoir can be refilled to 100% after it is depleted and further runs can be performed.
I hoped to load the fill height as a covariate table with a defined order (Full -> empty), however that seems to be not possible due to randomization of the covariate input.
Any other suggestions how to best tackle that problem are highly welcome.
cheers ben