[om] Manipulating Structured Data

[Michael Kohlhase]

> But don't take my word for it; the OM people probably
> view me as a pest, at best :)

Whether or not we do, you are dead right on your clarification. I assue
however, he meant to ask how you write down the mathematical formula that
...
and then David's answer is correct. 

     Michael


> You do not use OM to sum anything.  You use OM to designate
> a data object.  If you wish to sum stuff up, you have to write
> a program.   Similarly, if you wish to select from a list the
> items that are positive, you would have to write a program.
> 
> You could name your program in some OM syntax if that helps.
> 
> 
> 
> Muthukkaruppan Annamalai wrote:
> > 
> > The following OM object specifies the summation of member values of list 
> > P.  The assumption here is that the member values are numeric entities.
> > 
> > 
> > <OMOBJ>
> >     <OMA>
> >          <OMS  cd="fns2"  name="apply_to_list"/>
> >          <OMS  cd="arith1"  name="plus"/>
> >          <OMV  name="P"/>
> >     </OMA>
> > </OMOBJ>
> > 
> > 
> > What if the members of list P is a complex data type?  Lets say I wish 
> > to sum up the (P.quantity) attribute of the list members.  Any 
> > suggestion how I could deal with this situation?
> > 
> > 
> > 
> > 
> > Muthukkaruppan Annamalai
> > mkppan at cs.mu.oz.au
> > 
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