[Patch] reworked advanced-portfolio.scm

[Andrew Sackville-West]

On Thu, 23 Feb 2006 19:45:28 +0100
Herbert Thoma <herbert.thoma at iis.fraunhofer.de> wrote:

> Hi!
> 
> I yust want to throw in my 2 cents because I worked
> on this report a long time ago, i.e. it is in its current
> shape because it fits my needs.
> 
> Let me explain my usage scenario:
> 
> Most of my securities are denominated in Euro. I own some
> in USD as well, but I bought them for a certain Euro amount
> and I will sell them for Euro. So I get a cost basis in
> Euro from the transactions. The money in and money out
> values are consequently all in Euro. And since my report
> currency is Euro I never need currency conversion for
> money in or out.
> 
> The only place where I need currency conversion is the
> current value because the stock quotes of the USD securities
> are in USD.

SO in this case you are using the pricedb to set the stock price in USD, right? I think it works then because the exchanges are only done if there is a pricedb entry. There is, in my working version, no exchange done on data gathered from transactions directly.
> 
> So in the case where the report currency is the same as
> the transaction currency you should allways use the
> transaction value and don't do any currency conversion for
> money in or out.
> 
> If the report currency is not the transcation currency
> then you porbably should use the currency conversion factor
> from the price db that is closest to the transaction time.

So you are saying in the case where there is both pricedb and transaction data AND the report currency is different from the txn currency, we should use the pricedb entries to make the exchange? This means that if you have transaction data that is more recent than the pricedb, you'd prefer the more out-of-date information? 

A

> 
>   Herbert.
> -- 
> Herbert Thoma
> Head of Video Group
> Multimedia Realtime Systems Department
> Fraunhofer IIS
> Am Wolfsmantel 33, 91058 Erlangen, Germany
> Phone: +49-9131-776-323
> Fax:   +49-9131-776-399
> email: tma at iis.fhg.de
> www: http://www.iis.fhg.de/
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