To construct a new parameter from the existing ones use Create/Modify Parameter module. Drag the parameter[s] from the Parameter Tree and drop it onto the Construct Parameter area.
In the example above the parameters bx and bz are displayed in the text area as the unique AMDA parameter identifiers imf(0) and imf_gsm(3).
While constructing you may use Tools For Parameter Construction -
for example - Functions:
To combine different AMDA parameters which possibly have different sampling times
you have to specify new parameter sampling (or Time Step).
Depending on original samplings, AMDA parameters used in the expression will be averaged or interpolated to create new parameter with the requested time resolution. AMDA parameter's sampling times as well as valid globalStart/globalStop intervals are shown in the tooltip opened when the mouse is over the corresponding dataset of the WorkSpace Explorer Parameters subtree.
After clicking the Save button new parameter is added to the Derived Parameters tree. From now you can treat it (plot, download, data mining) as if it were real one.
You may group your parameters in the folders:
use context menu which is opened on right mouse click
on any folder node of the Derived Parameters subtree.