>Category Structuring, Tool Mark, place in net, open configuration, choose
>or type "positions" for second argument. Read the Help on Mark to
>understand it. Bottomline: Compute only sees the component of a field named
>"data". To work on any other component, it must be temporarily copied into
>the "data" component, which is what Mark does for you (it also preserves
>prior "data" as "saved data").
Works like a charm now!
Thanks a lot and best regards,
--
------------------------------------------------------------------------
Thomas Ruedas
Institute of Meteorology and Geophysics, J.W.Goethe University Frankfurt
e-mail: [EMAIL PROTECTED]
http://www.geophysik.uni-frankfurt.de/~ruedas/
------------------------------------------------------------------------
