On Sat, 18 Feb 2006 15:44:38 -0500 Derek Atkins <[EMAIL PROTECTED]> wrote:
> Make sure you're responding to the list, please.... heh. you too ;) > > Quoting Andrew Sackville-West <[EMAIL PROTECTED]>: > > >> E.g., here's a problem case: > >> > >> Buy 100 shares on date T0 > >> pricedb entry on date T1 > >> pricedb entry on date T2 > >> Sell 50 shares on date T3 > >> > >> Let's assume that delta-t is something like a week or a month, or even > >> a year. The value of the sale at T3 could be VERY DIFFERENT than the > >> value in the pricedb at time T2. When looking at the value of your > >> holding at time T4, IMHO you should use the price from time T3, not > >> the price from time T2. > >> > >> Perhaps we need some C code to make this easier to compute "on the > >> fly". But it's IMHO how it should work. > > > > yeah, I understand now. good example. So the issue I see is that we > > have to get away from exchange-fn altogether as that is what breaks > > without a pricedb. AM I right? So I have to come up with some other way > > of converting the currencies. The real problem here is that I just > > don't understand what Mike's patch was supposed to do in the first > > place. All I did was fix it so it ran :). Alright, I'm off to study > > this thing more closely and see if I can figure out the proper way to > > do it. I'll report back captain. > > I'm not sure we have to get away from exchange-fn altogether.. Although > we might need to extend it a bit. The current exchange-fn is defined in > report-system/commodity-utilities.scm : gnc:case-exchange-fn and returns > a procedure that does the computation. There are some docs there in > the source file. yeah. more study comin' up. > > I'm not convinced the problem here is exchange-fn. I think the problem is > partly that we're assuming a price-db earlier and creating bad commodity > collectors. makes sense. > > I'm hoping Mike will chime in and explain to you what he was trying to do. Me Too! A > > You're always welcome to pull out a particular version of the report from > SVN. http://svn.gnucash.org/trac/browser > > Good Luck, > > -derek > -- > Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory > Member, MIT Student Information Processing Board (SIPB) > URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH > [EMAIL PROTECTED] PGP key available >
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