> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> David Nickerson
> Sent: 10 November 2006 06:40
> To: For those interested in contributing to the development of CellML.
> Subject: Re: [cellml-discussion] Quick questions about units...
>
> >>>> I'm really not sure how to address this other than
> suggesting that
> >>>> applications clearly state their units support status
> and provide
> >>>> some way to easily locate (and view?) instances where unit
> >> conversion
> >>>> factors have been added to the model (either at the
> >> connection level
> >>>> or within equations).
> >>> To make it simpler in terms of user interface, I think it
> should be
> >>> done at the connection level. At least, that's where we
> >> intend to do it in COR.
> >>
> >> except that most of the generated units conversion factors could
> >> easily be buried inside equations where they are hard to spot with
> >> the naked eye...for example, this sort of equation can give you
> >> widely different results without the need for any units
> corrections
> >> at the connection level:
> >>
> >> a [mM] = b [uM] + c [mM]
> >>
> >> but would presumably result in (b*0.001) within the equation...
> >
> > Ok, maybe I misunderstood what you meant by units correction at the
> > connection level then. I, personally, intend to do 'b*0.001' when
> > computing the model, but not show/tell it to the user when
> s/he edits
> > the model, so that s/he doesn't get confused.
>
> yep - thats the sort of behaviour I would expect, but its
> also the sort of behaviour that will be very application
> specific and provide unwary users of CellML models with
> inexplicably different results for the same model in
> different applications. Which I'm guessing is why you suggest
> this sort of behaviour needs to be enforced in all CellML
> compliant applications...
Thanks for your help. I think I have managed to get my point across now...
:)
Alan.
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